KR101985184B1 - Novel organic dye and preparation thereof - Google Patents

Novel organic dye and preparation thereof Download PDF

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KR101985184B1
KR101985184B1 KR1020110008702A KR20110008702A KR101985184B1 KR 101985184 B1 KR101985184 B1 KR 101985184B1 KR 1020110008702 A KR1020110008702 A KR 1020110008702A KR 20110008702 A KR20110008702 A KR 20110008702A KR 101985184 B1 KR101985184 B1 KR 101985184B1
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dye
chemical formula
emi
formula
solar cell
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KR20120087485A (en
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안현철
정희정
배호기
박찬석
이춘영
그레이트젤 마이클
케이 나제루딘 엠디
이 첸이
히스 델캄 자레드
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주식회사 동진쎄미켐
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B59/00Artificial dyes of unknown constitution
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B57/00Other synthetic dyes of known constitution
    • C09B57/008Triarylamine dyes containing no other chromophores
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B57/00Other synthetic dyes of known constitution
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G9/00Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/20Light-sensitive devices
    • H01G9/2059Light-sensitive devices comprising an organic dye as the active light absorbing material, e.g. adsorbed on an electrode or dissolved in solution
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K30/00Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K85/00Organic materials used in the body or electrodes of devices covered by this subclass
    • H10K85/60Organic compounds having low molecular weight
    • H10K85/631Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine
    • H10K85/636Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine comprising heteroaromatic hydrocarbons as substituents on the nitrogen atom
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G9/00Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/20Light-sensitive devices
    • H01G9/2004Light-sensitive devices characterised by the electrolyte, e.g. comprising an organic electrolyte
    • H01G9/2018Light-sensitive devices characterised by the electrolyte, e.g. comprising an organic electrolyte characterised by the ionic charge transport species, e.g. redox shuttles
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G9/00Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/20Light-sensitive devices
    • H01G9/2027Light-sensitive devices comprising an oxide semiconductor electrode
    • H01G9/2031Light-sensitive devices comprising an oxide semiconductor electrode comprising titanium oxide, e.g. TiO2
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K85/00Organic materials used in the body or electrodes of devices covered by this subclass
    • H10K85/30Coordination compounds
    • H10K85/331Metal complexes comprising an iron-series metal, e.g. Fe, Co, Ni
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K85/00Organic materials used in the body or electrodes of devices covered by this subclass
    • H10K85/60Organic compounds having low molecular weight
    • H10K85/649Aromatic compounds comprising a hetero atom
    • H10K85/657Polycyclic condensed heteroaromatic hydrocarbons
    • H10K85/6576Polycyclic condensed heteroaromatic hydrocarbons comprising only sulfur in the heteroaromatic polycondensed ring system, e.g. benzothiophene
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • Y02E10/542Dye sensitized solar cells
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • Y02E10/549Organic PV cells
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50Manufacturing or production processes characterised by the final manufactured product

Abstract

본 발명은 신규한 유기염료 및 이의 제조방법에 관한 것으로, 전자 공여체로서 특정 지방족 화합물을, 중간 연결부분(스페이서(spacer))에 특정 유닛을 갖는 본 발명의 염료 화합물은 염료감응태양전지(dye-sensitized solar cell, DSSC)에 사용되어 종래의 염료보다 향상된 몰흡광계수, Jsc(단회로 광전류 밀도) 및 광전기 변환효율을 나타내며, 특히 [Co(Ⅱ)(bpy)3](B(CN)4)2와 [Co(Ⅲ)(bpy)3](B(CN)4)3의 레독스 커플을 포함하는 전해질 시스템과 병행사용하여 태양전지의 효율을 크게 향상시킬 수 있다.The present invention relates to a novel organic dye and a method for producing the same, and a dye compound of the present invention having a specific aliphatic compound as an electron donor and a specific unit at an intermediate connecting portion (spacer) Co (II) (bpy) 3 ] (B (CN) 4 ) is used in the sensitized solar cell (DSSC) to show an improved molar extinction coefficient, J sc ) 2 and a redox couple of [Co (III) (bpy) 3 ] (B (CN) 4 ) 3 , the efficiency of the solar cell can be greatly improved.

Description

신규한 유기염료 및 이의 제조방법 {NOVEL ORGANIC DYE AND PREPARATION THEREOF}TECHNICAL FIELD [0001] The present invention relates to novel organic dyes,

본 발명은 염료감응태양전지(dye-sensitized solar cell, DSSC)에 사용되는 염료 및 이의 제조방법에 관한 것이다.
The present invention relates to a dye used in a dye-sensitized solar cell (DSSC) and a method for producing the same.

1991년도 마이클 그라첼(Michael Gratzel) 연구팀에 의해 염료감응 나노입자 산화티타늄 태양전지가 개발된 이후 이 분야에 관한 많은 연구가 진행되고 있다. 염료감응태양전지는 기존의 실리콘계 태양전지에 비해 효율이 높고 제조단가가 현저히 낮기 때문에 기존의 비정질 실리콘 태양전지를 대체할 수 있는 가능성을 가지고 있으며, 실리콘 태양전지와 달리 염료감응태양전지는 가시광선을 흡수하여 전자-홀(hole) 쌍을 생성할 수 있는 염료분자와, 생성된 전자를 전달하는 전이금속 산화물을 주 구성 재료로 하는 광전기화학적 태양전지이다.Since the development of dye-sensitized nanoparticle titanium dioxide solar cells by Michael Gratzel's team in 1991, much research has been done in this area. Dye-sensitized solar cells have the potential to replace conventional amorphous silicon solar cells because they have higher efficiency and lower manufacturing costs than conventional silicon solar cells. Unlike silicon solar cells, dye-sensitized solar cells have the potential to replace visible silicon A dye molecule capable of absorbing and generating an electron-hole pair, and a transition metal oxide transmitting the generated electrons as main constituent materials.

염료감응태양전지에 사용되는 염료로서 높은 광전기 전환효율을 나타내는 루테늄 금속 착체가 널리 사용되어 왔는데, 이 루테늄 금속 착체는 가격이 너무 비싸다는 단점이 있었다.Ruthenium metal complexes exhibiting high photoelectric conversion efficiency have been widely used as dyes for dye-sensitized solar cells, and these ruthenium metal complexes have been disadvantageous in that they are too expensive.

최근, 흡광효율, 산화환원 반응 안정성 및 분자내 전하-전달(charge-transfer, CT)계 흡수의 측면에서 우수한 물성을 나타내는, 금속을 함유하지 않은 유기염료가, 고가의 루테늄 금속 착체를 대체할 수 있는 태양전지용 염료로서 사용될 수 있음이 발견되어, 금속이 결여된 유기염료에 대한 연구가 중점적으로 이루어지고 있다.Recently, metal-free organic dyes, which exhibit excellent physical properties in terms of absorption efficiency, redox stability and intramolecular charge-transfer (CT) absorption, can replace expensive ruthenium metal complexes It has been found that the dye can be used as a dye for a solar cell, and studies on an organic dye lacking a metal have been focused on.

유기염료는 일반적으로 π-결합 유닛에 의해 연결되는 전자 공여체(electron donor)-전자 수용체(electron acceptor) 잔기의 구조를 갖는다. 대부분의 유기염료에서, 아민 유도체가 전자 공여체의 역할을 하고, 2-시아노아크릴산 또는 로다닌 잔기가 전자 수용체의 역할을 하며, 이 두 부위는 메타인 유닛 또는 티오펜 체인과 같은 π-결합 시스템에 의해 연결된다.Organic dyes generally have a structure of electron donor-electron acceptor moieties connected by a pi-bonding unit. In most organic dyes, the amine derivative serves as an electron donor, and the 2-cyanoacrylic acid or rhodanine residue serves as an electron acceptor, and these two moieties are linked by a π-bond system such as a methine unit or thiophene chain Lt; / RTI >

그러나, 이제까지 알려진 대부분의 유기염료는 루테늄 금속 착체 염료에 비해 낮은 변환효율과 낮은 구동 안정성을 나타내므로, 이러한 전자 공여체와 수용체의 종류 또는 π-결합 길이를 변화시킴으로써, 기존의 유기염료 화합물들에 비해 향상된 몰흡광계수를 가지며 높은 광전기 변환효율을 나타내는 새로운 염료를 개발하려는 노력이 지속되고 있는 실정이다.However, since most of the organic dyes known so far exhibit lower conversion efficiency and lower driving stability than ruthenium metal complex dyes, by changing the kind or? -Bond length of such electron donors and acceptors, Efforts have been made to develop new dyes having improved molar extinction coefficient and high photoelectric conversion efficiency.

또한 염료감응태양전지에 사용되는 전해질은 일반적으로 Iodide/Triiodide의 레독스 시스템을 이용하고 있다. 그러나 이 시스템은 금속에 대한 부식성이 있어 염료감응태양전지의 내구성을 떨어뜨리며, 또한 레독스 전위차가 작은 것이 문제점으로 대두되어 새로운 전해질에 대한 연구가 꾸준히 진행되고 있다.In addition, electrolytes used in dye-sensitized solar cells generally use the redox system of Iodide / Triiodide. However, since this system is corrosive to metals, the durability of the dye-sensitized solar cell is degraded, and the redox potential difference is small. As a result, researches on new electrolytes are proceeding steadily.

따라서, 본 발명은 종래의 염료보다 향상된 몰흡광계수, Jsc(단회로 광전류 밀도) 및 광전기 변환효율을 나타내며, 특히 코발트계 전해질과 병행사용하여 태양전지의 효율을 크게 향상시킬 수 있는 유기염료 및 이의 제조방법을 제공하는 것을 목적으로 한다.Accordingly, the present invention relates to an organic dye which can exhibit an improved molar extinction coefficient, J sc (single-line photocurrent density) and photoelectric conversion efficiency compared with conventional dyes, and can remarkably improve the efficiency of a solar cell in combination with a cobalt- And a method for producing the same.

또한 본 발명은 상기 염료를 포함하여 종래보다 향상된 몰흡광계수, Jsc(단회로 광전류 밀도) 및 광전기 변환효율을 나타내는 염료증감 태양전지를 제공하는 것을 목적으로 한다.It is another object of the present invention to provide a dye-sensitized solar cell including the dye and exhibiting an improved molar extinction coefficient, J sc (single-line photocurrent density) and photoelectric conversion efficiency.

또한 본 발명은 기존의 염료감응태양전지보다 얇은 박막으로의 제조를 가능하게 하고, 금속에 대한 부식성이 적어 염료감응태양전지의 내구성을 향상시킬 수 있으며, 특히 레독스 전위차가 커 염료감응태양전지의 효율을 크게 향상시킬 수 있는 새로운 전해질 시스템 및 이를 포함하는 염료감응태양전지를 제공하는 것을 목적으로 한다.
The present invention also provides a dye-sensitized solar cell comprising a dye-sensitized solar cell and a dye-sensitized solar cell. The dye-sensitized solar cell according to claim 1, wherein the dye- And a dye-sensitized solar cell including the same.

상기 목적을 달성하기 위하여, 본 발명은 하기 화학식 1로 표시되는 유기염료를 제공한다.In order to achieve the above object, the present invention provides an organic dye represented by the following general formula (1).

[화학식 1][Chemical Formula 1]

Figure 112011007069884-pat00001
Figure 112011007069884-pat00001

상기 화학식 1에서, In Formula 1,

X는 N, P, 또는 As이며, 바람직하기로 N이며,X is N, P, or As, preferably N,

Y는 각각 독립적으로 S 또는 O이며, 바람직하기로 모두 S이며,Y is each independently S or O, preferably all S,

Z는 O, S, B(C6H13), N(C6H13), P(C6H13), C(C6H13)2, 또는 Si(C6H13)2이며, 바람직하기로 C(C6H13)2이며And Z is O, S, B (C 6 H 13), N (C 6 H 13), P (C 6 H 13), C (C 6 H 13) 2, or Si (C 6 H 13) 2 , preferably to a C (C 6 H 13) 2, and

R1은 각각 독립적으로

Figure 112011007069884-pat00002
,
Figure 112011007069884-pat00003
, 또는
Figure 112011007069884-pat00004
이며(*는 연결부분), 여기서 a1 내지 a4는 각각 독립적으로 수소, C6H13O, C1 -6의 알킬이며, 바람직하기로 두 개의 R1은 서로 같으며, 더욱 바람직하기로
Figure 112011007069884-pat00005
이고 a2는 C6H13O이고 나머지는 수소이며,R < 1 >
Figure 112011007069884-pat00002
,
Figure 112011007069884-pat00003
, or
Figure 112011007069884-pat00004
And was made to (* is a connection portion), where a 1 to a 4 each independently is hydrogen, C 6 H 13 O, alkyl of C 1 -6, two R 1 are preferably equal to each other, more preferably
Figure 112011007069884-pat00005
A 2 is C 6 H 13 O and the remainder is hydrogen,

R2는 각각 독립적으로 C1 -6의 알킬로 치환되거나 치환되지 않은 페닐이고 서로 환을 형성할 수 있으며, 바람직하기로 두 개의 R2은 서로 같으며, 더욱 바람직하기로 페닐이며,R 2 are each independently selected from R 2 was two to substituted with a C 1 -6 alkyl or an unsubstituted phenyl, and may form a ring with each other, is preferably equal to each other, and more preferably to phenyl,

R3은 C1 -6의 알킬로 치환되거나 치환되지 않은 페닐이며,R 3 is optionally substituted phenyl to alkyl of C 1 -6,

이때, R1과 R2, R2와 R3은 치환기에 의하여 환을 형성할 수도 있고,In this case, R 1 and R 2 , R 2 and R 3 may form a ring by a substituent,

R4

Figure 112011007069884-pat00006
,
Figure 112011007069884-pat00007
, 또는
Figure 112011007069884-pat00008
이며,R 4 is
Figure 112011007069884-pat00006
,
Figure 112011007069884-pat00007
, or
Figure 112011007069884-pat00008
Lt;

An은 Anchoring group이며, 바람직하기로

Figure 112011007069884-pat00009
이며(*는 연결부분),An is an anchoring group, preferably
Figure 112011007069884-pat00009
(* Is the connecting part),

p는 1 내지 3의 정수이며, 바람직하게는 1이며,p is an integer of 1 to 3, preferably 1,

m은 0 또는 1이며, 바람직하기로 1이며, m is 0 or 1, preferably 1,

o는 0 또는 1이며, 바람직하기로 0이며,o is 0 or 1, preferably 0,

n은 1 내지 2이며, 바람직하기로 1이다.
n is 1 to 2, preferably 1.

또한 본 발명은 R1-(R2)p에 X; 필요에 따라 (R3)m 또는 (R4)o; 하기 화학식 2의 전구체 화합물을 순차 반응시킨 후 얻어진 화합물의 말단에 An를 결합하여 제조되는 화학식 1로 표시되는 염료의 제조방법을 제공한다.In another aspect, the present invention R 1 - to (R 2) p X; (R < 3 >) m or (R < 4 >) o; Reacting a precursor compound represented by the following formula (2) sequentially, and then bonding An to an end of the obtained compound to prepare a dye represented by the formula (1).

[화학식 2](2)

Figure 112011007069884-pat00010

Figure 112011007069884-pat00010

또한 본 발명은 상기 염료를 포함하는 것을 특징으로 하는 염료감응태양전지를 제공한다.
The present invention also provides a dye-sensitized solar cell comprising the dye.

또한 본 발명은 [Co(Ⅱ)(bpy)3](B(CN)4)2와 [Co(Ⅲ)(bpy)3](B(CN)4)3의 레독스 커플을 포함하는 염료감응태양전지용 전해질 시스템을 포함한다.
In another aspect, the present invention [Co (Ⅱ) (bpy) 3] (B (CN) 4) 2 and [Co (Ⅲ) (bpy) 3] (B (CN) 4) sensitive dye comprises a redox couple of 3 And an electrolyte system for a solar cell.

또한 본 발명은 상기 전해질 시스템을 포함하는 것을 특징으로 하는 염료감응태양전지를 제공한다.
The present invention also provides a dye-sensitized solar cell comprising the electrolyte system.

본 발명의 염료 화합물은 염료감응태양전지(DSSC)에 사용되어 종래의 염료보다 향상된 몰흡광계수, Jsc(단회로 광전류 밀도) 및 광전기 변환효율을 나타내어 태양전지의 효율을 크게 향상시킬 수 있고, 고가의 칼럼을 사용하지 않고도 정제가 가능하여 염료 합성단가를 획기적으로 낮출 수 있다.INDUSTRIAL APPLICABILITY The dye compound of the present invention can be used in a dye-sensitized solar cell (DSSC) to exhibit an improved molar extinction coefficient, J sc (single-line photocurrent density) and photoelectric conversion efficiency, Purification can be performed without using an expensive column, and the cost of dye synthesis can be remarkably lowered.

또한 본 발명의 전해질 시스템은 기존의 염료감응태양전지보다 얇은 박막으로의 제조를 가능하게 하고, 금속에 대한 부식성이 적어 염료감응태양전지의 내구성을 향상시킬 수 있으며, 특히 레독스 전위차가 커 염료감응태양전지의 효율을 크게 향상시킬 수 있다.
In addition, the electrolyte system of the present invention makes it possible to manufacture the thin film as a thinner film than the conventional dye-sensitized solar cell, and it is possible to improve the durability of the dye-sensitized solar cell due to low corrosiveness to metal. Especially, The efficiency of the solar cell can be greatly improved.

도 1은 본 발명의 실시예 1에서 제조된 염료 Y123에 대한 CHCl3에 용해시켜 광흡수스펙트럼을 측정한 결과이고,
도 2는 본 발명의 실시예 3 및 4에 대한 광전류 밀도-전압(J-V)를 측정한 결과이고,
도 3은 본 발명의 실시예 3 및 4에 대한 IPCE 스펙트럼을 측정한 결과이다.
FIG. 1 shows the results of measurement of light absorption spectra by dissolving the dye Y123 prepared in Example 1 of the present invention in CHCl3,
FIG. 2 shows the results of measurement of photocurrent density-voltage (JV) for Examples 3 and 4 of the present invention,
3 shows the results of measurement of IPCE spectrum for Examples 3 and 4 of the present invention.

본 발명자들은, 전자 공여체로서 특정 지방족 화합물을, 중간 연결부분(스페이서(spacer))에 특정 유닛을 갖는 본 발명의 염료 화합물은 염료감응태양전지(dye-sensitized solar cell, DSSC)에 사용되어 종래의 염료보다 향상된 몰흡광계수, Jsc(단회로 광전류 밀도) 및 광전기 변환효율을 나타내며, 특히 특히 [Co(Ⅱ)(bpy)3](B(CN)4)2와 [Co(Ⅲ)(bpy)3](B(CN)4)3의 레독스 커플을 포함하는 전해질 시스템과 병행사용하여 태양전지의 효율을 크게 향상시킬 수 있음을 확인하고 본 발명을 완성하게 되었다.The present inventors have found that a dye compound of the present invention having a specific aliphatic compound as an electron donor and a specific unit in an intermediate connecting portion (spacer) is used in a dye-sensitized solar cell (DSSC) improved molar extinction coefficient than dyes, J sc (photocurrent density in single dose) and the opto-electronic represents the conversion efficiency, in particular, in particular [Co (ⅱ) (bpy) 3] (B (CN) 4) 2 and [Co (ⅲ) (bpy ) 3 ] (B (CN) 4 ) 3 , the efficiency of the solar cell can be greatly improved, and the present invention has been accomplished.

본 발명의 유기염료는 하기 화학식 1로 표시되는 것을 특징으로 한다.The organic dye of the present invention is characterized by being represented by the following formula (1).

[화학식 1][Chemical Formula 1]

Figure 112011007069884-pat00011
Figure 112011007069884-pat00011

상기 화학식 1에서, In Formula 1,

X는 N, P, 또는 As이며, 바람직하기로 N이며,X is N, P, or As, preferably N,

Y는 각각 독립적으로 S 또는 O이며, 바람직하기로 모두 S이며,Y is each independently S or O, preferably all S,

Z는 O, S, B(C6H13), N(C6H13), P(C6H13), C(C6H13)2, 또는 Si(C6H13)2이며, 바람직하기로 C(C6H13)2이며And Z is O, S, B (C 6 H 13), N (C 6 H 13), P (C 6 H 13), C (C 6 H 13) 2, or Si (C 6 H 13) 2 , preferably to a C (C 6 H 13) 2, and

R1은 각각 독립적으로

Figure 112011007069884-pat00012
,
Figure 112011007069884-pat00013
, 또는
Figure 112011007069884-pat00014
이며(*는 연결부분), 여기서 a1 내지 a4는 각각 독립적으로 수소, C6H13O, C1 -6의 알킬이며, 바람직하기로 두 개의 R1은 서로 같으며, 더욱 바람직하기로
Figure 112011007069884-pat00015
이고 a2는 C6H13O이고 나머지는 수소이며,R < 1 >
Figure 112011007069884-pat00012
,
Figure 112011007069884-pat00013
, or
Figure 112011007069884-pat00014
And was made to (* is a connection portion), where a 1 to a 4 each independently is hydrogen, C 6 H 13 O, alkyl of C 1 -6, two R 1 are preferably equal to each other, more preferably
Figure 112011007069884-pat00015
A 2 is C 6 H 13 O and the remainder is hydrogen,

R2는 각각 독립적으로 C1 -6의 알킬로 치환되거나 치환되지 않은 페닐이고 서로 환을 형성할 수 있으며, 바람직하기로 두 개의 R2은 서로 같으며, 더욱 바람직하기로 페닐이며,R 2 are each independently selected from R 2 was two to substituted with a C 1 -6 alkyl or an unsubstituted phenyl, and may form a ring with each other, is preferably equal to each other, and more preferably to phenyl,

R3은 C1 -6의 알킬로 치환되거나 치환되지 않은 페닐이며,R 3 is optionally substituted phenyl to alkyl of C 1 -6,

이때, R1과 R2, R2와 R3은 치환기에 의하여 환을 형성할 수도 있고,In this case, R 1 and R 2 , R 2 and R 3 may form a ring by a substituent,

R4

Figure 112011007069884-pat00016
,
Figure 112011007069884-pat00017
, 또는
Figure 112011007069884-pat00018
이며,R 4 is
Figure 112011007069884-pat00016
,
Figure 112011007069884-pat00017
, or
Figure 112011007069884-pat00018
Lt;

An은 Anchoring group이며, 바람직하기로

Figure 112011007069884-pat00019
이며,An is an anchoring group, preferably
Figure 112011007069884-pat00019
Lt;

p는 1 내지 3의 정수이며, 바람직하게는 1이며,p is an integer of 1 to 3, preferably 1,

m은 0 또는 1이며, 바람직하기로 1이며, m is 0 or 1, preferably 1,

o는 0 또는 1이며, 바람직하기로 0이며,o is 0 or 1, preferably 0,

n은 1 내지 2이며, 바람직하기로 1이다.n is 1 to 2, preferably 1.

상기에서 An은 구체적인 예로 하기와 같은 구조일 수 있다.(*는 연결부분이다)In the above, An may be a specific example as follows (* is a connecting part)

Figure 112011007069884-pat00020
,
Figure 112011007069884-pat00021
,
Figure 112011007069884-pat00022
,
Figure 112011007069884-pat00023
,
Figure 112011007069884-pat00024
,
Figure 112011007069884-pat00025
,
Figure 112011007069884-pat00026
,
Figure 112011007069884-pat00027
,
Figure 112011007069884-pat00028
,
Figure 112011007069884-pat00029
,
Figure 112011007069884-pat00030
,
Figure 112011007069884-pat00031
,
Figure 112011007069884-pat00032
,
Figure 112011007069884-pat00033
,
Figure 112011007069884-pat00034
,
Figure 112011007069884-pat00035
,
Figure 112011007069884-pat00036
,
Figure 112011007069884-pat00037
,
Figure 112011007069884-pat00038
,
Figure 112011007069884-pat00039
,
Figure 112011007069884-pat00040
,
Figure 112011007069884-pat00041
,
Figure 112011007069884-pat00042
,
Figure 112011007069884-pat00043
,
Figure 112011007069884-pat00044
,
Figure 112011007069884-pat00045
,
Figure 112011007069884-pat00046
,
Figure 112011007069884-pat00047
,
Figure 112011007069884-pat00048
,
Figure 112011007069884-pat00049
,
Figure 112011007069884-pat00050
,
Figure 112011007069884-pat00051
,
Figure 112011007069884-pat00052
,
Figure 112011007069884-pat00053
,
Figure 112011007069884-pat00054
,
Figure 112011007069884-pat00055
,
Figure 112011007069884-pat00056
,
Figure 112011007069884-pat00057
,
Figure 112011007069884-pat00058
,
Figure 112011007069884-pat00059
,
Figure 112011007069884-pat00020
,
Figure 112011007069884-pat00021
,
Figure 112011007069884-pat00022
,
Figure 112011007069884-pat00023
,
Figure 112011007069884-pat00024
,
Figure 112011007069884-pat00025
,
Figure 112011007069884-pat00026
,
Figure 112011007069884-pat00027
,
Figure 112011007069884-pat00028
,
Figure 112011007069884-pat00029
,
Figure 112011007069884-pat00030
,
Figure 112011007069884-pat00031
,
Figure 112011007069884-pat00032
,
Figure 112011007069884-pat00033
,
Figure 112011007069884-pat00034
,
Figure 112011007069884-pat00035
,
Figure 112011007069884-pat00036
,
Figure 112011007069884-pat00037
,
Figure 112011007069884-pat00038
,
Figure 112011007069884-pat00039
,
Figure 112011007069884-pat00040
,
Figure 112011007069884-pat00041
,
Figure 112011007069884-pat00042
,
Figure 112011007069884-pat00043
,
Figure 112011007069884-pat00044
,
Figure 112011007069884-pat00045
,
Figure 112011007069884-pat00046
,
Figure 112011007069884-pat00047
,
Figure 112011007069884-pat00048
,
Figure 112011007069884-pat00049
,
Figure 112011007069884-pat00050
,
Figure 112011007069884-pat00051
,
Figure 112011007069884-pat00052
,
Figure 112011007069884-pat00053
,
Figure 112011007069884-pat00054
,
Figure 112011007069884-pat00055
,
Figure 112011007069884-pat00056
,
Figure 112011007069884-pat00057
,
Figure 112011007069884-pat00058
,
Figure 112011007069884-pat00059
,

Figure 112011007069884-pat00060
,
Figure 112011007069884-pat00061
Figure 112011007069884-pat00060
,
Figure 112011007069884-pat00061

본 발명의 화학식 1의 염료 화합물은 바람직하게는 하기 구조식 중 어느 하나로 나타내어질 수 있다.The dye compound of formula (1) of the present invention may be represented by any one of the following formulas.

[화학식1][Chemical Formula 1]

Figure 112011007069884-pat00062
Figure 112011007069884-pat00062

[화학식2](2)

Figure 112011007069884-pat00063
Figure 112011007069884-pat00063

[화학식3](3)

Figure 112011007069884-pat00064
Figure 112011007069884-pat00064

[화학식4][Chemical Formula 4]

Figure 112011007069884-pat00065
Figure 112011007069884-pat00065

[화학식5][Chemical Formula 5]

Figure 112011007069884-pat00066
Figure 112011007069884-pat00066

[화학식6][Chemical Formula 6]

Figure 112011007069884-pat00067
Figure 112011007069884-pat00067

[화학식7](7)

Figure 112011007069884-pat00068
Figure 112011007069884-pat00068

[화학식8][Chemical Formula 8]

Figure 112011007069884-pat00069
Figure 112011007069884-pat00069

[화학식9][Chemical Formula 9]

Figure 112011007069884-pat00070
Figure 112011007069884-pat00070

[화학식10][Chemical formula 10]

Figure 112011007069884-pat00071
Figure 112011007069884-pat00071

[화학식11](11)

Figure 112011007069884-pat00072
Figure 112011007069884-pat00072

[화학식12][Chemical Formula 12]

Figure 112011007069884-pat00073
Figure 112011007069884-pat00073

[화학식13][Chemical Formula 13]

Figure 112011007069884-pat00074
Figure 112011007069884-pat00074

[화학식14][Chemical Formula 14]

Figure 112011007069884-pat00075
Figure 112011007069884-pat00075

[화학식15][Chemical Formula 15]

Figure 112011007069884-pat00076
Figure 112011007069884-pat00076

[화학식16][Chemical Formula 16]

Figure 112011007069884-pat00077
Figure 112011007069884-pat00077

[화학식17][Chemical Formula 17]

Figure 112011007069884-pat00078
Figure 112011007069884-pat00078

[화학식18][Chemical Formula 18]

Figure 112011007069884-pat00079
Figure 112011007069884-pat00079

[화학식19][Chemical Formula 19]

Figure 112011007069884-pat00080
Figure 112011007069884-pat00080

[화학식20][Chemical Formula 20]

Figure 112011007069884-pat00081
Figure 112011007069884-pat00081

[화학식21][Chemical Formula 21]

Figure 112011007069884-pat00082
Figure 112011007069884-pat00082

[화학식22][Chemical Formula 22]

Figure 112011007069884-pat00083
Figure 112011007069884-pat00083

[화학식23](23)

Figure 112011007069884-pat00084
Figure 112011007069884-pat00084

[화학식24]≪ EMI ID =

Figure 112011007069884-pat00085
Figure 112011007069884-pat00085

[화학식25](25)

Figure 112011007069884-pat00086
Figure 112011007069884-pat00086

[화학식26](26)

Figure 112011007069884-pat00087
Figure 112011007069884-pat00087

[화학식27](27)

Figure 112011007069884-pat00088
Figure 112011007069884-pat00088

[화학식28](28)

Figure 112011007069884-pat00089
Figure 112011007069884-pat00089

[화학식29][Chemical Formula 29]

Figure 112011007069884-pat00090
Figure 112011007069884-pat00090

[화학식30](30)

Figure 112011007069884-pat00091
Figure 112011007069884-pat00091

[화학식31](31)

Figure 112011007069884-pat00092
Figure 112011007069884-pat00092

[화학식32](32)

Figure 112011007069884-pat00093
Figure 112011007069884-pat00093

[화학식33](33)

Figure 112011007069884-pat00094
Figure 112011007069884-pat00094

[화학식34](34)

Figure 112011007069884-pat00095
Figure 112011007069884-pat00095

[화학식35](35)

Figure 112011007069884-pat00096
Figure 112011007069884-pat00096

[화학식36](36)

Figure 112011007069884-pat00097
Figure 112011007069884-pat00097

[화학식37](37)

Figure 112011007069884-pat00098
Figure 112011007069884-pat00098

[화학식38](38)

Figure 112011007069884-pat00099
Figure 112011007069884-pat00099

[화학식39][Chemical Formula 39]

Figure 112011007069884-pat00100
Figure 112011007069884-pat00100

[화학식40](40)

Figure 112011007069884-pat00101
Figure 112011007069884-pat00101

[화학식41](41)

Figure 112011007069884-pat00102
Figure 112011007069884-pat00102

[화학식42](42)

Figure 112011007069884-pat00103
Figure 112011007069884-pat00103

[화학식43](43)

Figure 112011007069884-pat00104
Figure 112011007069884-pat00104

[화학식44](44)

Figure 112011007069884-pat00105
Figure 112011007069884-pat00105

[화학식45][Chemical Formula 45]

Figure 112011007069884-pat00106
Figure 112011007069884-pat00106

[화학식46](46)

Figure 112011007069884-pat00107
Figure 112011007069884-pat00107

[화학식47](47)

Figure 112011007069884-pat00108
Figure 112011007069884-pat00108

[화학식48](48)

Figure 112011007069884-pat00109
Figure 112011007069884-pat00109

[화학식49](49)

Figure 112011007069884-pat00110
Figure 112011007069884-pat00110

[화학식50](50)

Figure 112011007069884-pat00111
Figure 112011007069884-pat00111

[화학식51](51)

Figure 112011007069884-pat00112
Figure 112011007069884-pat00112

[화학식52](52)

Figure 112011007069884-pat00113
Figure 112011007069884-pat00113

[화학식53](53)

Figure 112011007069884-pat00114
Figure 112011007069884-pat00114

[화학식54](54)

Figure 112011007069884-pat00115
Figure 112011007069884-pat00115

[화학식55](55)

Figure 112011007069884-pat00116
Figure 112011007069884-pat00116

[화학식56](56)

Figure 112011007069884-pat00117
Figure 112011007069884-pat00117

[화학식57](57)

Figure 112011007069884-pat00118
Figure 112011007069884-pat00118

[화학식58](58)

Figure 112011007069884-pat00119
Figure 112011007069884-pat00119

[화학식59][Chemical Formula 59]

Figure 112011007069884-pat00120
Figure 112011007069884-pat00120

[화학식60](60)

Figure 112011007069884-pat00121
Figure 112011007069884-pat00121

[화학식61](61)

Figure 112011007069884-pat00122
Figure 112011007069884-pat00122

[화학식62](62)

Figure 112011007069884-pat00123
Figure 112011007069884-pat00123

[화학식63](63)

Figure 112011007069884-pat00124
Figure 112011007069884-pat00124

[화학식64]≪ EMI ID =

Figure 112011007069884-pat00125
Figure 112011007069884-pat00125

[화학식65](65)

Figure 112011007069884-pat00126
Figure 112011007069884-pat00126

[화학식66](66)

Figure 112011007069884-pat00127
Figure 112011007069884-pat00127

[화학식67](67)

Figure 112011007069884-pat00128
Figure 112011007069884-pat00128

[화학식68](68)

Figure 112011007069884-pat00129
Figure 112011007069884-pat00129

[화학식69](69)

Figure 112011007069884-pat00130
Figure 112011007069884-pat00130

[화학식70](70)

Figure 112011007069884-pat00131
Figure 112011007069884-pat00131

[화학식71](71)

Figure 112011007069884-pat00132
Figure 112011007069884-pat00132

[화학식72](72)

Figure 112011007069884-pat00133
Figure 112011007069884-pat00133

[화학식73](73)

Figure 112011007069884-pat00134
Figure 112011007069884-pat00134

[화학식74]≪ EMI ID =

Figure 112011007069884-pat00135
Figure 112011007069884-pat00135

[화학식75](75)

Figure 112011007069884-pat00136
Figure 112011007069884-pat00136

[화학식76][Formula 76]

Figure 112011007069884-pat00137
Figure 112011007069884-pat00137

[화학식77][Formula 77]

Figure 112011007069884-pat00138
Figure 112011007069884-pat00138

[화학식78](78)

Figure 112011007069884-pat00139
Figure 112011007069884-pat00139

[화학식79](79)

Figure 112011007069884-pat00140
Figure 112011007069884-pat00140

[화학식80](80)

Figure 112011007069884-pat00141
Figure 112011007069884-pat00141

[화학식81][Formula 81]

Figure 112011007069884-pat00142
Figure 112011007069884-pat00142

[화학식82](82)

Figure 112011007069884-pat00143
Figure 112011007069884-pat00143

[화학식83](83)

Figure 112011007069884-pat00144
Figure 112011007069884-pat00144

[화학식84](84)

Figure 112011007069884-pat00145
Figure 112011007069884-pat00145

[화학식85](85)

Figure 112011007069884-pat00146
Figure 112011007069884-pat00146

[화학식86]≪ EMI ID =

Figure 112011007069884-pat00147
Figure 112011007069884-pat00147

[화학식87][Chemical Formula 87]

Figure 112011007069884-pat00148
Figure 112011007069884-pat00148

[화학식88][Formula 88]

Figure 112011007069884-pat00149
Figure 112011007069884-pat00149

[화학식89](89)

Figure 112011007069884-pat00150
Figure 112011007069884-pat00150

[화학식90](90)

Figure 112011007069884-pat00151
Figure 112011007069884-pat00151

[화학식91][Formula 91]

Figure 112011007069884-pat00152
Figure 112011007069884-pat00152

[화학식92]≪ EMI ID =

Figure 112011007069884-pat00153
Figure 112011007069884-pat00153

[화학식93]≪ EMI ID =

Figure 112011007069884-pat00154
Figure 112011007069884-pat00154

[화학식94](94)

Figure 112011007069884-pat00155
Figure 112011007069884-pat00155

[화학식95]≪ EMI ID =

Figure 112011007069884-pat00156
Figure 112011007069884-pat00156

[화학식96]≪ EMI ID =

Figure 112011007069884-pat00157
Figure 112011007069884-pat00157

[화학식97][Formula 97]

Figure 112011007069884-pat00158
Figure 112011007069884-pat00158

[화학식98](98)

Figure 112011007069884-pat00159
Figure 112011007069884-pat00159

[화학식99][Formula 99]

Figure 112011007069884-pat00160
Figure 112011007069884-pat00160

[화학식100](100)

Figure 112011007069884-pat00161
Figure 112011007069884-pat00161

[화학식101](101)

Figure 112011007069884-pat00162
Figure 112011007069884-pat00162

[화학식102]≪ EMI ID =

Figure 112011007069884-pat00163
Figure 112011007069884-pat00163

[화학식103]≪ EMI ID =

Figure 112011007069884-pat00164
Figure 112011007069884-pat00164

[화학식104]≪ EMI ID =

Figure 112011007069884-pat00165
Figure 112011007069884-pat00165

[화학식105]≪ EMI ID =

Figure 112011007069884-pat00166
Figure 112011007069884-pat00166

[화학식106]≪ EMI ID =

Figure 112011007069884-pat00167
Figure 112011007069884-pat00167

[화학식107]≪ EMI ID =

Figure 112011007069884-pat00168
Figure 112011007069884-pat00168

[화학식108](108)

Figure 112011007069884-pat00169
Figure 112011007069884-pat00169

[화학식109](109)

Figure 112011007069884-pat00170
Figure 112011007069884-pat00170

[화학식110](110)

Figure 112011007069884-pat00171
Figure 112011007069884-pat00171

[화학식111](111)

Figure 112011007069884-pat00172
Figure 112011007069884-pat00172

[화학식112](112)

Figure 112011007069884-pat00173
Figure 112011007069884-pat00173

[화학식113](113)

Figure 112011007069884-pat00174
Figure 112011007069884-pat00174

[화학식114](114)

Figure 112011007069884-pat00175
Figure 112011007069884-pat00175

[화학식115](115)

Figure 112011007069884-pat00176
Figure 112011007069884-pat00176

[화학식116]≪ EMI ID =

Figure 112011007069884-pat00177
Figure 112011007069884-pat00177

[화학식117](117)

Figure 112011007069884-pat00178
Figure 112011007069884-pat00178

[화학식118](118)

Figure 112011007069884-pat00179
Figure 112011007069884-pat00179

[화학식119](119)

Figure 112011007069884-pat00180
Figure 112011007069884-pat00180

[화학식120](120)

Figure 112011007069884-pat00181
Figure 112011007069884-pat00181

[화학식121](121)

Figure 112011007069884-pat00182
Figure 112011007069884-pat00182

[화학식122](122)

Figure 112011007069884-pat00183
Figure 112011007069884-pat00183

[화학식123](123)

Figure 112011007069884-pat00184
Figure 112011007069884-pat00184

[화학식124](124)

Figure 112011007069884-pat00185
Figure 112011007069884-pat00185

[화학식125](125)

Figure 112011007069884-pat00186
Figure 112011007069884-pat00186

[화학식126](126)

Figure 112011007069884-pat00187
Figure 112011007069884-pat00187

[화학식127](127)

Figure 112011007069884-pat00188
Figure 112011007069884-pat00188

[화학식128](128)

Figure 112011007069884-pat00189
Figure 112011007069884-pat00189

[화학식129]≪ EMI ID =

Figure 112011007069884-pat00190
Figure 112011007069884-pat00190

[화학식130](130)

Figure 112011007069884-pat00191
Figure 112011007069884-pat00191

[화학식131][Formula 131]

Figure 112011007069884-pat00192
Figure 112011007069884-pat00192

[화학식132](132)

Figure 112011007069884-pat00193
Figure 112011007069884-pat00193

[화학식133](133)

Figure 112011007069884-pat00194
Figure 112011007069884-pat00194

[화학식134](134)

Figure 112011007069884-pat00195
Figure 112011007069884-pat00195

[화학식135](135)

Figure 112011007069884-pat00196
Figure 112011007069884-pat00196

[화학식136]≪ EMI ID =

Figure 112011007069884-pat00197
Figure 112011007069884-pat00197

[화학식137](137)

Figure 112011007069884-pat00198
Figure 112011007069884-pat00198

[화학식138]≪ EMI ID =

Figure 112011007069884-pat00199
Figure 112011007069884-pat00199

[화학식139][Chemical Formula 139]

Figure 112011007069884-pat00200
Figure 112011007069884-pat00200

[화학식140]≪ EMI ID =

Figure 112011007069884-pat00201
Figure 112011007069884-pat00201

[화학식141](141)

Figure 112011007069884-pat00202
Figure 112011007069884-pat00202

[화학식142](142)

Figure 112011007069884-pat00203
Figure 112011007069884-pat00203

[화학식143](143)

Figure 112011007069884-pat00204
Figure 112011007069884-pat00204

[화학식144](144)

Figure 112011007069884-pat00205

Figure 112011007069884-pat00205

또한 본 발명의 화학식 1로 표시되는 염료는 R1-(R2)p에 X; 필요에 따라 (R3)m 또는 (R4)o; 하기 화학식 2의 전구체 화합물을 순차 반응시킨 후 얻어진 화합물의 말단에 An를 결합하여 제조되는 화학식 1로 표시되는 염료의 제조방법을 제공한다.The dyes represented by the formula (1) of the present invention may be represented by the formula: R 1 - (R 2 ) p; (R < 3 >) m or (R < 4 >) o; Reacting a precursor compound represented by the following formula (2) sequentially, and then bonding An to an end of the obtained compound to prepare a dye represented by the formula (1).

[화학식 2](2)

Figure 112011007069884-pat00206
Figure 112011007069884-pat00206

또한 본 발명은 상기 염료를 포함하는 염료감응 태양전지를 제공하는 바, 상기 염료감응 태양전지는 산화물 반도체 미립자에 상기 화학식 1로 표시되는 염료를 담지시킨 것을 특징으로 한다. 본 발명의 염료감응 태양전지는 상기 화학식 1로 표시되는 염료를 사용하는 것 이외에 종래 염료를 이용하여 염료감응 태양전지를 제조하는 방법들이 적용될 수 있음은 물론이며, 구체적인 일예로 대한민국공개특허공보 제10-2009-38377호(출원인 동진쎄미켐(주))에 기재된 방법들이 적용될 수 있으며, 바람직하게는 본 발명의 염료감응 태양전지는 산화물 반도체 미립자를 이용해서 기판상에 산화물 반도체의 박막을 제조하고, 이어서 상기 박막에 본 발명의 염료를 담지시킨 것이 좋다.
Also, the present invention provides a dye-sensitized solar cell comprising the dye, wherein the dye-sensitized solar cell comprises the dye represented by Formula 1 supported on the oxide semiconductor fine particles. In the dye-sensitized solar cell of the present invention, methods for producing a dye-sensitized solar cell using conventional dyes other than the dye represented by Formula 1 may be applied. For example, Korean Patent Laid- -2009-38377 (Applicant, Dongjin Semichem Co.) can be applied. Preferably, the dye-sensitized solar cell of the present invention is produced by preparing a thin film of an oxide semiconductor on a substrate using oxide semiconductor particles, And the dye of the present invention is supported on the thin film.

또한 본 발명은 또한 본 발명은 [Co(Ⅱ)(bpy)3](B(CN)4)2와 [Co(Ⅲ)(bpy)3](B(CN)4)3의 레독스 커플을 포함하는 염료감응태양전지용 전해질 시스템 및 상기 전해질 시스템을 포함하는 것을 특징으로 하는 염료감응태양전지를 제공한다.In addition, the redox couple of the invention In another aspect, the present invention [Co (Ⅱ) (bpy) 3] (B (CN) 4) 2 and [Co (Ⅲ) (bpy) 3] (B (CN) 4) 3 And an electrolyte system for the dye-sensitized solar cell. The dye-sensitized solar cell includes the electrolyte system.

본 발명의 전해질은 기존의 Iodide/Triiodide의 레독스 커플을 이용하는 시스템을 대신하여 [Co(Ⅱ)(bpy)3](B(CN)4)2와 [Co(Ⅲ)(bpy)3](B(CN)4)3의 레독스 커플을 사용한 것으로 상기 레독스 커플을 사용함으로써 기존의 염료감응태양전지보다 얇은 박막으로의 제조를 가능하게 하고, 금속에 대한 부식성이 적어 염료감응태양전지의 내구성을 향상시킬 수 있으며, 특히 레독스 전위차가 커 염료감응태양전지의 효율을 크게 향상시킬 수 있다.Electrolyte of the present invention in place of a system using a conventional redox couple of the Iodide / Triiodide [Co (Ⅱ) (bpy) 3] (B (CN) 4) 2 and [Co (Ⅲ) (bpy) 3] ( B (CN) 4 ) 3. By using the redox couples, it is possible to manufacture thin films as compared with conventional dye-sensitized solar cells. Further, since the corrosion resistance to metals is low, the durability And the efficiency of the dye-sensitized solar cell can be greatly improved due to a large redox potential difference.

본 발명의 전해질 시스템은 기존의 Iodide/Triiodide의 레독스 커플을 이용하는 시스템을 대신하여 [Co(Ⅱ)(bpy)3](B(CN)4)2와 [Co(Ⅲ)(bpy)3](B(CN)4)3의 레독스 커플을 사용한 것을 제외하고는 공지의 전해질 시스템에 사용되는 사항들이 적용될 수 있음은 물론이다. 일예로 대한민국공개특허공보 제10-2009-38377호(출원인 동진쎄미켐(주))에 기재된 방법들이 적용될 수 있으며, 바람직하기로는 용매를 아세토니트릴로 사용하고 LiClO4와 tert-butylpyridine를 더욱 포함할 수 있다. 산화환원 전해질의 농도는 0.01-5 M인 것이 좋으며, 0.05-0.5 M인 것이 더욱 바람직하다.
(Bpy) 3 ] (B (CN) 4 ) 2 and [Co (III) (bpy) 3 ] instead of the existing system using the redox couple of Iodide / Triiodide, (B (CN) 4 ) 3 is used as the electrolytic solution, the present invention is not limited thereto. For example, Korean Patent Laid-Open Publication No. 10-2009-38377 (Applicant, Dongjin Semichem Co., Ltd.) can be applied. Preferably, the solvent is used as acetonitrile and further LiClO 4 and tert-butylpyridine have. The concentration of the redox electrolyte is preferably 0.01-5 M, and more preferably 0.05-0.5 M.

이하에서 본 발명을 실시예에 의거하여 보다 구체적으로 설명한다. 단, 이들 실시예는 본 발명을 예시하기 위한 것일 뿐, 본 발명이 이들만으로 한정되는 것은 아니다.
Hereinafter, the present invention will be described in more detail with reference to examples. It is to be understood, however, that these examples are for illustrative purposes only and are not intended to limit the scope of the invention.

사용된 모든 원료들은 상업적으로 시판되는 것을 사용하였다.
All raw materials used were commercially available.

실시예 1 염료의 합성Example 1 Synthesis of dye

하기 기재한 반응식 1에 따라 화학식 1-13으로 표시되는 염료(Y123)을 제조하였다. 사용된 모든 원료들은 상업적으로 시판되는 것을 사용하였다.The dye (Y123) represented by the formula 1-13 was prepared according to Reaction Scheme 1 described below. All raw materials used were commercially available.

[반응식 1][Reaction Scheme 1]

Figure 112011007069884-pat00207

Figure 112011007069884-pat00207

상기 반응식 1에서 각각의 반응에 사용된 반응물들은 아래의 기재와 같다.The reactants used in each reaction in Scheme 1 are as follows.

(i) 1-bromohexane, K2CO3, DMF; (ii) n-BuLi, THF, isopropyl pinacol borate; (iii) 4-bromo-nitrobenzene, Pd(PPh3)2Cl2, Cs2CO3, DMF, H2O; (iv) Zn, NH4Cl, acetone, H2O; (v) H2SO4, NaNO2, KI, H2O; (vi) 6, CuI, 1,10-phenantroline, t-BuOK, toluene; (vii) n-BuLi, THF, isopropyl pinacol borate; (viii) 1, Pd(PPh3)2Cl2, Cs2CO3, DMF, H2O; (ix) cyanoacetic acid, piperidine, CHCl3. 상기에서 화합물 1은 6-bromo-4,4-dihexyl-cyclopenta[2,1-b;3,4-b']dithiophene-2-carbaldehyde이다.
(i) 1-bromohexane, K2CO3, DMF; (ii) n-BuLi, THF, isopropyl pinacol borate; (iii) 4-bromo-nitrobenzene, Pd (PPh3) 2Cl2, Cs2CO3, DMF, H2O; (iv) Zn, NH4Cl, acetone, H2O; (v) H2SO4, NaNO2, KI, H2O; (vi) 6 , CuI, 1,10-phenanthroline, t-BuOK, toluene; (vii) n-BuLi, THF, isopropyl pinacol borate; (viii) 1 , Pd (PPh3) 2Cl2, Cs2CO3, DMF, H2O; (ix) cyanoacetic acid, piperidine, CHCl3. Compound 1 is 6-bromo-4,4-dihexyl-cyclopenta [2,1- b : 3,4- b '] dithiophene-2-carbaldehyde.

상기 제조된 염료 Y123에 대한 CHCl3에 용해시켜 광흡수스펙트럼을 측정하였으며, 그 결과를 도 1에 나타내었다.
The dye Y123 was dissolved in CHCl3 to measure a light absorption spectrum. The results are shown in Fig.

실시예 2 전해질 시스템Example 2 Electrolyte System

0.22 M [Co(Ⅱ)(bpy)3](B(CN)4)2, 0.05 M [Co(Ⅲ)(bpy)3](B(CN)4)3, 01 M LiClO4, 0.2 M tert-butylpyridine를 아세토니트릴에 용해시켜 전해질을 제조하였다.0.22 M [Co (Ⅱ) ( bpy) 3] (B (CN) 4) 2, 0.05 M [Co (Ⅲ) (bpy) 3] (B (CN) 4) 3, 01 M LiClO 4, 0.2 M tert -butylpyridine was dissolved in acetonitrile to prepare an electrolyte.

참조예 전해질 시스템Reference Example Electrolytic System

1.0 M 1,3-dimethylimidazolium(DMII), 0.03 M Iodine, 0.1 M guandeniumthiocyanate, 0.5 M tert-butylpyridine, 0.05 M LiI를 발레로니트릴/아세토니트릴(15:85 v/v)에 용해시켜 전해질을 제조하였다.
An electrolyte was prepared by dissolving 1.0 M 1,3-dimethylimidazolium (DMII), 0.03 M Iodine, 0.1 M guandeniumthiocyanate, 0.5 M tert-butylpyridine and 0.05 M LiI in valeronitrile / acetonitrile (15:85 v / v) .

실시예Example 3 염료감응태양전지의 제조 3 Manufacture of dye-sensitized solar cell

상기 실시예 1에서 제조한 염료와 실시예 2에서 제조한 전해질을 이용하여 염료감응 태양전지를 제조하였다. A dye-sensitized solar cell was prepared using the dye prepared in Example 1 and the electrolyte prepared in Example 2.

보다 상세하게는 FTO 유리기판 위에 2 ㎛ 두께의 제1 TiO2 층을 제조하고, 광산란을 위해 5 ㎛ 두께의 산란층을 제조하였다. 제조된 TiO2 전극을 본 발명에 따른 염료의 용액 (상기 실시예 1에서 제조된 염료가 0.1 mM tert-부탄올과 아세토니트릴이 1;1(v/v)로 구성된 용매에 용해된 용액)에 7시간 함침시켜 염료를 흡착시켰다. 또한 FTO 기판 상에 백금을 코팅하여 대전극을 제조하였다.
More specifically, a first TiO 2 layer having a thickness of 2 μm was formed on an FTO glass substrate, and a scattering layer having a thickness of 5 μm was prepared for light scattering. The prepared TiO 2 electrode was immersed in a solution of the dye according to the present invention (a solution prepared by dissolving the dye prepared in Example 1 in a solvent composed of 0.1 mM tert-butanol and acetonitrile in a ratio of 1: 1 (v / v)) to 7 The dye was adsorbed for a time. Also, platinum was coated on the FTO substrate to prepare a counter electrode.

실시예Example 4 염료감응태양전지의 제조 4 Manufacture of dye-sensitized solar cell

상기 실시예 3에서 전해질 시스템으로 실시예 2의 전해질 대신에 참조예의 전해질을 사용한 것을 제외하고는 실시예 3과 동일한 방법으로 염료감응 태양전지를 제조하였다.
A dye-sensitized solar cell was prepared in the same manner as in Example 3 except that the electrolyte of Reference Example was used instead of the electrolyte of Example 2 as the electrolyte system in Example 3. [

실험Experiment

상기 제조한 염료감응 태양전지의 Voc, Jsc, FF 및 η(%)를 측정하였으며, 그 결과를 도 2, 도 3 및 하기 표 1에 나타내었다.The Voc, Jsc, FF and eta (%) of the dye-sensitized solar cell were measured. The results are shown in FIGS. 2 and 3 and Table 1 below.

Voc(mV)Voc (mV) Jsc(mA cm-2)Jsc (mA cm-2) FFFF 효율(η)(%)Efficiency (?) (%) 실시예 3Example 3 757757 13.613.6 0.700.70 7.27.2 실시예 4Example 4 855855 14.614.6 0.700.70 8.88.8

상기 표 1에서 나타난 바와 같이 본 발명의 신규 염료는 우수한 광전기 변환효율을 나타내었으며, 특히 본 발명의 전해질 시스템을 병행사용한 실시예 3의 경우 실시예 4에 비하여 더욱 우수한 효율을 나타내었다. 이는 도 2 및 도 3에 나타난 바와 같이 본 발명의 전해질 시스템이 기존의 전해질 시스템에 비하여 광 흡수밴드를 좀 더 장파장으로 이동시키고, Jsc, 및 Voc 값이 향상되어 전체적으로 효율을 더욱 향상시킨 것으로 파악된다.As shown in Table 1, the novel dyes of the present invention exhibited excellent photoelectric conversion efficiency. In particular, Example 3 using the electrolyte system of the present invention exhibited more excellent efficiency than Example 4. As shown in FIG. 2 and FIG. 3, the electrolyte system according to the present invention moves the absorption band to a longer wavelength as compared with the conventional electrolyte system, and the Jsc and Voc values are improved and the efficiency is further improved as a whole .

Claims (11)

하기 화학식 1로 표시되는 유기염료:
[화학식 1]
Figure 112018120801173-pat00208

상기 화학식 1에서,
X는 N이며,
Y는 각각 독립적으로 S이며,
Z는 C(C6H13)2이며,
R1은 각각 독립적으로
Figure 112018120801173-pat00209
,
Figure 112018120801173-pat00210
, 또는
Figure 112018120801173-pat00211
이며(*는 연결부분), 여기서 a1 내지 a4는 각각 독립적으로 수소, C6H13O, C1-6의 알킬이며,
R2는 각각 페닐이며,
R3는 페닐이며,
이때, R1과 R2, R2와 R3은 치환기에 의하여 환을 형성할 수도 있고,
R4
Figure 112018120801173-pat00212
,
Figure 112018120801173-pat00213
, 또는
Figure 112018120801173-pat00214
이며,
An은 Anchoring group이며,
p는 1이며,
m은 1이며,
o는 0 또는 1이며,
n은 1 내지 2임.
An organic dye represented by the following formula (1):
[Chemical Formula 1]
Figure 112018120801173-pat00208

In Formula 1,
X is N,
Y is each independently S,
Z is C (C 6 H 13) 2 ,
R < 1 >
Figure 112018120801173-pat00209
,
Figure 112018120801173-pat00210
, or
Figure 112018120801173-pat00211
(* Is a linking moiety), wherein a 1 to a 4 are each independently hydrogen, C 6 H 13 O, C 1-6 alkyl,
R < 2 > are each phenyl,
R 3 is phenyl,
In this case, R 1 and R 2 , R 2 and R 3 may form a ring by a substituent,
R 4 is
Figure 112018120801173-pat00212
,
Figure 112018120801173-pat00213
, or
Figure 112018120801173-pat00214
Lt;
An is an anchoring group,
p is 1,
m is 1,
o is 0 or 1,
n is 1 to 2;
삭제delete 제1항에 있어서,
R1은 a2는 C6H13O이고 나머지는 수소인 것을 특징으로 하는 유기염료.
The method according to claim 1,
R 1 is a 2 is C 6 H 13 O and the other is an organic dye, characterized in that the hydrogen.
제1항에 있어서,
하기 화학식 1 내지 13, 16 내지 18 및 100 내지 144 중 어느 하나로 표시되는 것을 특징으로 하는 유기염료:
[화학식1]
Figure 112018120801173-pat00215

[화학식2]
Figure 112018120801173-pat00216

[화학식3]
Figure 112018120801173-pat00217

[화학식4]
Figure 112018120801173-pat00218

[화학식5]
Figure 112018120801173-pat00219

[화학식6]
Figure 112018120801173-pat00220

[화학식7]
Figure 112018120801173-pat00221

[화학식8]
Figure 112018120801173-pat00222

[화학식9]
Figure 112018120801173-pat00223

[화학식10]
Figure 112018120801173-pat00224

[화학식11]
Figure 112018120801173-pat00225

[화학식12]
Figure 112018120801173-pat00226

[화학식13]
Figure 112018120801173-pat00227

[화학식16]
Figure 112018120801173-pat00230

[화학식17]
Figure 112018120801173-pat00231

[화학식18]
Figure 112018120801173-pat00232

[화학식100]
Figure 112018120801173-pat00314

[화학식101]
Figure 112018120801173-pat00315

[화학식102]
Figure 112018120801173-pat00316

[화학식103]
Figure 112018120801173-pat00317

[화학식104]
Figure 112018120801173-pat00318

[화학식105]
Figure 112018120801173-pat00319

[화학식106]
Figure 112018120801173-pat00320

[화학식107]
Figure 112018120801173-pat00321

[화학식108]
Figure 112018120801173-pat00322

[화학식109]
Figure 112018120801173-pat00323

[화학식110]
Figure 112018120801173-pat00324

[화학식111]
Figure 112018120801173-pat00325

[화학식112]
Figure 112018120801173-pat00326

[화학식113]
Figure 112018120801173-pat00327

[화학식114]
Figure 112018120801173-pat00328

[화학식115]
Figure 112018120801173-pat00329

[화학식116]
Figure 112018120801173-pat00330

[화학식117]
Figure 112018120801173-pat00331

[화학식118]
Figure 112018120801173-pat00332

[화학식119]
Figure 112018120801173-pat00333

[화학식120]
Figure 112018120801173-pat00334

[화학식121]
Figure 112018120801173-pat00335

[화학식122]
Figure 112018120801173-pat00336

[화학식123]
Figure 112018120801173-pat00337

[화학식124]
Figure 112018120801173-pat00338

[화학식125]
Figure 112018120801173-pat00339

[화학식126]
Figure 112018120801173-pat00340

[화학식127]
Figure 112018120801173-pat00341

[화학식128]
Figure 112018120801173-pat00342

[화학식129]
Figure 112018120801173-pat00343

[화학식130]
Figure 112018120801173-pat00344

[화학식131]
Figure 112018120801173-pat00345

[화학식132]
Figure 112018120801173-pat00346

[화학식133]
Figure 112018120801173-pat00347

[화학식134]
Figure 112018120801173-pat00348

[화학식135]
Figure 112018120801173-pat00349

[화학식136]
Figure 112018120801173-pat00350

[화학식137]
Figure 112018120801173-pat00351

[화학식138]
Figure 112018120801173-pat00352

[화학식139]
Figure 112018120801173-pat00353

[화학식140]
Figure 112018120801173-pat00354

[화학식141]
Figure 112018120801173-pat00355

[화학식142]
Figure 112018120801173-pat00356

[화학식143]
Figure 112018120801173-pat00357

[화학식144]
Figure 112018120801173-pat00358
The method according to claim 1,
An organic dye represented by any one of the following formulas (1) to (13), (16) to (18)
[Chemical Formula 1]
Figure 112018120801173-pat00215

(2)
Figure 112018120801173-pat00216

(3)
Figure 112018120801173-pat00217

[Chemical Formula 4]
Figure 112018120801173-pat00218

[Chemical Formula 5]
Figure 112018120801173-pat00219

[Chemical Formula 6]
Figure 112018120801173-pat00220

(7)
Figure 112018120801173-pat00221

[Chemical Formula 8]
Figure 112018120801173-pat00222

[Chemical Formula 9]
Figure 112018120801173-pat00223

[Chemical formula 10]
Figure 112018120801173-pat00224

(11)
Figure 112018120801173-pat00225

[Chemical Formula 12]
Figure 112018120801173-pat00226

[Chemical Formula 13]
Figure 112018120801173-pat00227

[Chemical Formula 16]
Figure 112018120801173-pat00230

[Chemical Formula 17]
Figure 112018120801173-pat00231

[Chemical Formula 18]
Figure 112018120801173-pat00232

(100)
Figure 112018120801173-pat00314

(101)
Figure 112018120801173-pat00315

≪ EMI ID =
Figure 112018120801173-pat00316

≪ EMI ID =
Figure 112018120801173-pat00317

≪ EMI ID =
Figure 112018120801173-pat00318

≪ EMI ID =
Figure 112018120801173-pat00319

≪ EMI ID =
Figure 112018120801173-pat00320

≪ EMI ID =
Figure 112018120801173-pat00321

(108)
Figure 112018120801173-pat00322

(109)
Figure 112018120801173-pat00323

(110)
Figure 112018120801173-pat00324

(111)
Figure 112018120801173-pat00325

(112)
Figure 112018120801173-pat00326

(113)
Figure 112018120801173-pat00327

(114)
Figure 112018120801173-pat00328

(115)
Figure 112018120801173-pat00329

≪ EMI ID =
Figure 112018120801173-pat00330

(117)
Figure 112018120801173-pat00331

(118)
Figure 112018120801173-pat00332

(119)
Figure 112018120801173-pat00333

(120)
Figure 112018120801173-pat00334

(121)
Figure 112018120801173-pat00335

(122)
Figure 112018120801173-pat00336

(123)
Figure 112018120801173-pat00337

(124)
Figure 112018120801173-pat00338

(125)
Figure 112018120801173-pat00339

(126)
Figure 112018120801173-pat00340

(127)
Figure 112018120801173-pat00341

(128)
Figure 112018120801173-pat00342

≪ EMI ID =
Figure 112018120801173-pat00343

(130)
Figure 112018120801173-pat00344

[Formula 131]
Figure 112018120801173-pat00345

(132)
Figure 112018120801173-pat00346

(133)
Figure 112018120801173-pat00347

(134)
Figure 112018120801173-pat00348

(135)
Figure 112018120801173-pat00349

≪ EMI ID =
Figure 112018120801173-pat00350

(137)
Figure 112018120801173-pat00351

≪ EMI ID =
Figure 112018120801173-pat00352

[Chemical Formula 139]
Figure 112018120801173-pat00353

≪ EMI ID =
Figure 112018120801173-pat00354

(141)
Figure 112018120801173-pat00355

(142)
Figure 112018120801173-pat00356

(143)
Figure 112018120801173-pat00357

(144)
Figure 112018120801173-pat00358
R1-(R2)p에 X; 필요에 따라 (R3)m 또는 (R4)o; 하기 화학식 2의 전구체 화합물을 순차 반응시킨 후 얻어진 화합물의 말단에 An를 결합하여 제조되는 청구항 1항에 따른 화학식 1로 표시되는 염료의 제조방법:
[화학식 2]
Figure 112018120801173-pat00359
R 1 - (R 2 ) p to X; (R < 3 >) m or (R < 4 >) o; A process for producing a dye represented by formula (1) according to claim 1, which is prepared by sequentially reacting a precursor compound represented by the following formula (2) and then bonding An to an end of the obtained compound:
(2)
Figure 112018120801173-pat00359
삭제delete 제5항에 있어서,
R1은 a2는 C6H13O이고 나머지는 수소인 것을 특징으로 화학식 1로 표시되는 염료의 제조방법.
6. The method of claim 5,
R 1 is a 2 is C 6 H 13 O and the other is a method of manufacturing a dye represented by the formula (1) wherein the hydrogen.
제1항 기재의 염료를 포함하는 것을 특징으로 하는 염료감응태양전지.A dye-sensitized solar cell comprising the dye according to claim 1. 제8항에 있어서,
[Co(Ⅱ)(bpy)3](B(CN)4)2와 [Co(Ⅲ)(bpy)3](B(CN)4)3의 레독스 커플을 포함하는 전해질 시스템을 더 포함하는 염료감응태양전지.
9. The method of claim 8,
Further comprising: [Co (Ⅱ) (bpy) 3] (B (CN) 4) 2 and [Co (Ⅲ) (bpy) 3] (B (CN) 4) electrolyte system comprising a redox couple of 3 Dye - sensitized solar cell.
삭제delete 삭제delete
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