CN113611800A - All-small-molecule organic solar cell based on novel additive and preparation method thereof - Google Patents

All-small-molecule organic solar cell based on novel additive and preparation method thereof Download PDF

Info

Publication number
CN113611800A
CN113611800A CN202110701873.5A CN202110701873A CN113611800A CN 113611800 A CN113611800 A CN 113611800A CN 202110701873 A CN202110701873 A CN 202110701873A CN 113611800 A CN113611800 A CN 113611800A
Authority
CN
China
Prior art keywords
solar cell
organic solar
molecule organic
small molecule
transport layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110701873.5A
Other languages
Chinese (zh)
Inventor
罗钧议
赵文博
安欣威
樊子卿
程溢川
张瀚文
胡雨
蒋果
肖静瑶
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chengdu Lingrui Aochuang Technology Co ltd
Original Assignee
Chengdu Lingrui Aochuang Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chengdu Lingrui Aochuang Technology Co ltd filed Critical Chengdu Lingrui Aochuang Technology Co ltd
Priority to CN202110701873.5A priority Critical patent/CN113611800A/en
Publication of CN113611800A publication Critical patent/CN113611800A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K30/00—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation
    • H10K30/20—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation comprising organic-organic junctions, e.g. donor-acceptor junctions
    • H10K30/211—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation comprising organic-organic junctions, e.g. donor-acceptor junctions comprising multiple junctions, e.g. double heterojunctions
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
    • H10K85/20—Carbon compounds, e.g. carbon nanotubes or fullerenes
    • H10K85/211—Fullerenes, e.g. C60
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
    • H10K85/60—Organic compounds having low molecular weight
    • H10K85/649—Aromatic compounds comprising a hetero atom
    • H10K85/655—Aromatic compounds comprising a hetero atom comprising only sulfur as heteroatom
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
    • H10K85/60—Organic compounds having low molecular weight
    • H10K85/649—Aromatic compounds comprising a hetero atom
    • H10K85/656—Aromatic compounds comprising a hetero atom comprising two or more different heteroatoms per ring
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
    • H10K85/60—Organic compounds having low molecular weight
    • H10K85/649—Aromatic compounds comprising a hetero atom
    • H10K85/657—Polycyclic condensed heteroaromatic hydrocarbons
    • H10K85/6576—Polycyclic condensed heteroaromatic hydrocarbons comprising only sulfur in the heteroaromatic polycondensed ring system, e.g. benzothiophene
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/549—Organic PV cells
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Abstract

The invention relates to the technical field of solar cells, in particular to a novel additive-based all-small-molecule organic solar cell and a preparation method thereofxH2x+2O, wherein x is 5 to 14. Compared with the prior art, the all-small-molecule organic solar cell based on the novel additive provided by the invention selects an alcohol material as the additive for the first time, and the alcohol material is added into the organic solar cell based on BTR: PC (personal computer)71In the active layer of the BM binary system all-small-molecule organic solar cell, BTR and PC are taken as main material71BM has good miscibility with donors andelectronegative groups in the acceptor form hydrogen bonds, so that the crystallization of the original binary system material can be promoted, the appearance of an active layer is improved, the trap recombination of single molecules and double molecules is reduced, and exciton separation and charge transmission are facilitated.

Description

All-small-molecule organic solar cell based on novel additive and preparation method thereof
Technical Field
The invention relates to the technical field of solar cells, in particular to a full-small-molecule organic solar cell based on a novel additive and a preparation method thereof.
Background
Currently, organic solar cells have attracted great interest in both academia and industry due to their outstanding advantages of light weight, ease of manufacture, low cost, flexibility, and translucency. Solution processed bulk heterojunction organic solar cells are a promising photovoltaic technology and can be used for next generation energy conversion. Conventional bulk heterojunction organic solar cells are generally obtained by mixing an electron donor material (conjugated polymer or small molecule) and a fullerene electron acceptor material (such as PC61BM and PC71 BM). Among them, organic solar cells based on all small molecules are an attractive alternative to polymer-based devices. Higher material purity can be achieved by a well-defined molecular discrete structure, which ensures greater reproducibility of the fabricated devices.
The working principle of the all-small-molecule organic solar cell (see fig. 3) is that under the illumination condition, an organic material absorbs photons to generate excitons; when the excitons diffuse to the contact surface of the donor and the acceptor, the excitons are decomposed into free electrons and free holes under the action of the energy level difference of the donor and the acceptor; and finally, free current carriers are collected by corresponding electrodes to form current, so that the purpose of converting solar energy into electric energy is realized. In order to achieve higher photovoltaic conversion efficiency, researchers have proposed various methods including making stacked devices, synthesizing new materials, using additives, and ternary strategies. Among them, the morphology of the active layer plays an important role in bulk heterojunction organic solar cells. The active layer part in the device should be capable of forming a good ordered film, which is beneficial to exciton dissociation and charge transmission, and finally realizes a high-efficiency organic solar cell. In various processing methods, additives can finely control the morphology of the active layer of an organic solar cell by affecting the way the film is formed during solution processing.
In the previous related report, the fullerene PC is prepared by mixing71BM is applied to a polymer organic solar cell to adjust the morphology of an active layer of a device and improve the photoelectric conversion efficiency of the device, but researches show that the effect is not ideal when a binary device is formed by BTR and a fullerene PC71BM receptor, and the traditional method of adding an additive DIO containing halogen elements to improve the efficiency of a polymer micromolecule system can bring harm to the environment, so that the safe and effective additive is found to improve the photoelectric conversion efficiency of the organic solar cell device, and the method has great scientific influence and practical significance.
Disclosure of Invention
In view of the above-mentioned deficiencies of the background art, the present invention provides a novel additive-based all small molecule organic solar cell.
The technical scheme adopted by the invention is as follows: full small molecule organic solar cell based on novel additive, including base plate, hole transport layer, active layer, electron transport layer and metal electrode, the key lies in: the active material is coated on the hole transport layer to form the active layer, the active material comprises a donor, an acceptor and an alcohol additive, and the chemical formula of the alcohol additive is CxH2x+2O, wherein x is 5 to 14.
Preferably, the donor is BTR and the acceptor is PC71BM。
Preferably, the mass ratio of the donor to the acceptor is 2:1 to 1: 5.
Preferably, the thickness of the active layer is 50 to 200 nm.
The preparation method of the all-small-molecule organic solar cell is characterized by comprising the following steps:
s1, adding a donor, an acceptor and an alcohol additive into a solvent, and uniformly stirring at room temperature to obtain an active material for later use;
s2, cleaning the substrate, and carrying out plasma ozone treatment;
s3, spin-coating PEDOT on the substrate treated by the ozone: PSS, forming a hole transport layer, and then carrying out thermal annealing treatment;
s4, spin-coating an active material on the hole transport layer to form an active layer, and then carrying out solvent annealing treatment;
and S5, sequentially evaporating an electron transport layer material LiF and a metal electrode material on the active layer to obtain the solar cell.
Preferably, the S1 is specifically: adding a donor, an acceptor and an alcohol additive into a solvent, and stirring at room temperature for 20-28h to obtain the active material, wherein the mass ratio of the donor to the acceptor is 2:1-1:5, and the alcohol additive accounts for 0.3-0.5% of the total mass of the donor and the acceptor.
Preferably, the S2 is specifically: the method comprises the steps of firstly performing pre-ultrasonic treatment on the ITO conductive glass by using ethanol, then sequentially performing ultrasonic cleaning on the ITO conductive glass by using detergent water, ultrapure water, acetone, isopropanol and ethanol, then blow-drying the ITO conductive glass by using a nitrogen gun, and performing plasma ozone treatment on the blow-dried ITO glass for 30 min.
Preferably, the S3 is specifically: and (3) placing the ITO glass treated by the ion ozone in a nitrogen environment for spin coating PEDOT, PSS, wherein the spin coating speed is 2000-6000rpm, the spin coating time is 20-60 seconds, and then placing the ITO glass on a heating platform for annealing for 30-60min, and the annealing temperature is 100-200 ℃.
Preferably, the S4 is specifically: and spin-coating the active material on the PEDOT/PSS electron transport layer at the spin-coating speed of 1000-.
Preferably, the S5 is specifically: putting the sheet coated with the active layer into an evaporation chamber of an organic vapor deposition system, putting an electron transport layer material LiF and a cathode electrode material Al, closing the chamber door, and vacuumizing to 5 × 10-4Then, the evaporation of LiF is performed at a rate of 0.1A/s and a thickness of 1-5nm, and then the evaporation of Al electrode is performed at a rate of 1-5A/s and a thickness of 100-200 nm.
Has the advantages that: compared with the prior art, the all-small-molecule organic solar cell based on the novel additive provided by the invention selects an alcohol material as the additive for the first time, and the alcohol material is added into the organic solar cell based on BTR: in the active layer of the all-small-molecule organic solar cell of the PC71BM binary system, because the active layer has a simple and stable molecular structure, the active layer has good miscibility with the main system materials BTR and PC71BM, and can form a hydrogen bond with electronegative groups in a donor and an acceptor, thereby promoting the crystallization of the original binary system materials, improving the morphology of the active layer, reducing the trap recombination of single molecules and double molecules, further promoting the enhancement of filling factors and current, and finally improving the efficiency of the device; the formation of a bicontinuous interpenetrating network of a bulk heterojunction can be promoted in the formation process of the organic thin film, which is beneficial to exciton separation and charge transmission.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a process flow diagram of the present invention;
fig. 3 is a working principle diagram of the organic solar cell.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The experimental procedures described in the following examples are conventional unless otherwise specified, and the reagents and materials, if not specified, are commercially available.
Example 1 preparation of all small molecule organic solar cell based on novel additives
1mg of BTR and 5mg of PC71BM were weighed, added with 12. mu.g of an alcohol additive and dissolved in 100ul of dichloromethane,
the structural formula of the alcohol additive is
Figure BDA0003130313250000041
The sheet resistance is 15 omega/cm2ITO (indium tin oxide) conductorThe method comprises the following steps of firstly performing pre-ultrasonic treatment on electric glass by using ethanol, then sequentially performing ultrasonic cleaning on the electric glass by using detergent water, ultrapure water, acetone, isopropanol and ethanol, then blow-drying the electric glass by using a nitrogen gun, and performing plasma ozone treatment on the blow-dried ITO glass for 30 min; placing the ITO glass treated by the ion ozone in a nitrogen environment for spin coating PEDOT, PSS, at the spin coating speed of 6000rpm for 20 seconds, and then placing the ITO glass on a heating platform for annealing for 60min at the annealing temperature of 200 ℃;
spin-coating an active material on a PEDOT (Poly ethylene terephthalate) electron transport layer at a spin-coating speed of 3000rpm, placing the PEDOT electron transport layer in a glass ware, and carrying out tetrahydrofuran solvent annealing for 60 s;
putting the sheet coated with the active layer into an evaporation chamber of an organic vapor deposition system, putting an electron transport layer material LiF and a cathode electrode material Al, closing the chamber door, and vacuumizing to 5 × 10-4Next, LiF was deposited at a rate of 0.1A/s and a thickness of 5nm, and then an Al electrode was deposited at a rate of 5A/s and a thickness of 200 nm.
Example 2 preparation of all small molecule organic solar cell based on novel additives
2mg of BTR and 2mg of PC71BM were weighed, added with 12. mu.g of alcohol additive and dissolved in 100ul of chlorobenzene solvent,
the structural formula of the alcohol additive is
Figure BDA0003130313250000051
The sheet resistance is 15 omega/cm2The ITO conductive glass is pre-ultrasonically treated by ethanol, then ultrasonically cleaned by detergent water, ultrapure water, acetone, isopropanol and ethanol in sequence, then blow-dried by a nitrogen gun, and the blow-dried ITO glass is subjected to plasma ozone treatment for 30 min; placing the ITO glass treated by the ion ozone in a nitrogen environment for spin coating PEDOT, PSS, wherein the spin coating speed is 4000rpm, the spin coating time is 50 seconds, and then placing the ITO glass on a heating platform for annealing for 30min, wherein the annealing temperature is 120 ℃;
spin-coating an active material on a PEDOT (Poly ethylene terephthalate) electron transport layer at a spin-coating speed of 2000rpm, placing the PEDOT electron transport layer in a glass ware, and carrying out tetrahydrofuran solvent annealing for 20 s;
the sheet coated with the active layerPutting the particles into an evaporation chamber of an organic vapor deposition system, putting an electron transport layer material LiF and a cathode electrode material Al, closing the chamber door, and vacuumizing to 5 x 10-4Next, LiF was deposited at a rate of 0.1A/s and a thickness of 1nm, and then an Al electrode was deposited at a rate of 5A/s and a thickness of 100 nm.
Example 3 preparation of all small molecule organic solar cell based on novel additives
2mg of BTR and 1mg of PC71BM were weighed, added with 12. mu.g of an alcohol additive and dissolved in 100ul of chloroform,
the structural formula of the alcohol additive is
Figure BDA0003130313250000061
The sheet resistance is 15 omega/cm2The ITO conductive glass is pre-ultrasonically treated by ethanol, then ultrasonically cleaned by detergent water, ultrapure water, acetone, isopropanol and ethanol in sequence, then blow-dried by a nitrogen gun, and the blow-dried ITO glass is subjected to plasma ozone treatment for 30 min; placing the ITO glass treated by the ion ozone in a nitrogen environment for spin coating PEDOT, PSS, wherein the spin coating speed is 2000rpm, the spin coating time is 20-60 seconds, and then placing the ITO glass on a heating platform for annealing for 30min, and the annealing temperature is 100 ℃;
spin-coating an active material on a PEDOT (Poly ethylene terephthalate) electron transport layer at a spin-coating speed of 1000rpm, placing the PEDOT electron transport layer in a glass ware, and carrying out tetrahydrofuran solvent annealing for 40 s;
putting the sheet coated with the active layer into an evaporation chamber of an organic vapor deposition system, putting an electron transport layer material LiF and a cathode electrode material Al, closing the chamber door, and vacuumizing to 5 × 10-4Next, LiF was deposited at a rate of 0.1A/s and a thickness of 3nm, and then an Al electrode was deposited at a rate of 1A/s and a thickness of 100 nm.
Example 4 preparation of all small molecule organic solar cell based on novel additives
2mg of BTR and 2mg of PC71BM were weighed, added with 12. mu.g of an alcohol additive and dissolved in 100ul of dichloromethane,
the structural formula of the alcohol additive is
Figure BDA0003130313250000062
The sheet resistance is 15 omega/cm2The ITO conductive glass is pre-ultrasonically treated by ethanol, then ultrasonically cleaned by detergent water, ultrapure water, acetone, isopropanol and ethanol in sequence, then blow-dried by a nitrogen gun, and the blow-dried ITO glass is subjected to plasma ozone treatment for 30 min; placing the ITO glass treated by the ion ozone in a nitrogen environment for spin coating PEDOT, PSS, wherein the spin coating speed is 4000rpm, the spin coating time is 50 seconds, and then placing the ITO glass on a heating platform for annealing for 30min, wherein the annealing temperature is 120 ℃;
spin-coating an active material on a PEDOT (Poly ethylene terephthalate) electron transport layer at a spin-coating speed of 2000rpm, placing the PEDOT electron transport layer in a glass ware, and carrying out tetrahydrofuran solvent annealing for 20 s;
putting the sheet coated with the active layer into an evaporation chamber of an organic vapor deposition system, putting an electron transport layer material LiF and a cathode electrode material Al, closing the chamber door, and vacuumizing to 5 × 10-4Next, LiF was deposited at a rate of 0.1A/s and a thickness of 1nm, and then an Al electrode was deposited at a rate of 5A/s and a thickness of 100 nm.
Example 5 preparation of all small molecule organic solar cell based on novel additives
2mg of BTR and 1mg of PC71BM were weighed, added with 12. mu.g of alcohol additive and dissolved in 100ul of chlorobenzene solvent,
the structural formula of the alcohol additive is
Figure BDA0003130313250000071
The sheet resistance is 15 omega/cm2The ITO conductive glass is pre-ultrasonically treated by ethanol, then ultrasonically cleaned by detergent water, ultrapure water, acetone, isopropanol and ethanol in sequence, then blow-dried by a nitrogen gun, and the blow-dried ITO glass is subjected to plasma ozone treatment for 30 min; placing the ITO glass treated by the ion ozone in a nitrogen environment for spin coating PEDOT, PSS, at the speed of 3000rpm for 20-60 seconds, and then placing the ITO glass on a heating platform for annealing for 30min at the annealing temperature of 150 ℃;
spin-coating an active material on a PEDOT (Poly ethylene terephthalate) electron transport layer at a spin-coating speed of 1000rpm, placing the PEDOT electron transport layer in a glass ware, and carrying out tetrahydrofuran solvent annealing for 40 s;
putting the sheet coated with the active layer into an evaporation chamber of an organic vapor deposition system, putting an electron transport layer material LiF and a cathode electrode material Al, closing the chamber door, and vacuumizing to 5 × 10-4Next, LiF was deposited at a rate of 0.1A/s and a thickness of 3nm, and then an Al electrode was deposited at a rate of 1A/s and a thickness of 100 nm.
Example 6 preparation of all small molecule organic solar cell based on novel additives
1mg of BTR and 5mg of PC71BM were weighed, added with 30. mu.g of an alcohol additive and dissolved in 100ul of chloroform,
the structural formula of the alcohol additive is
Figure BDA0003130313250000081
The sheet resistance is 15 omega/cm2The ITO conductive glass is pre-ultrasonically treated by ethanol, then ultrasonically cleaned by detergent water, ultrapure water, acetone, isopropanol and ethanol in sequence, then blow-dried by a nitrogen gun, and the blow-dried ITO glass is subjected to plasma ozone treatment for 30 min; placing the ITO glass treated by the ion ozone in a nitrogen environment, spin-coating PEDOT, PSS at the speed of 5000rpm for 20 seconds, and then placing the ITO glass on a heating platform for annealing for 60min at the annealing temperature of 200 ℃;
spin-coating an active material on a PEDOT (Poly ethylene terephthalate) electron transport layer at a spin-coating speed of 3000rpm, placing the PEDOT electron transport layer in a glass ware, and carrying out tetrahydrofuran solvent annealing for 60 s;
putting the sheet coated with the active layer into an evaporation chamber of an organic vapor deposition system, putting an electron transport layer material LiF and a cathode electrode material Al, closing the chamber door, and vacuumizing to 5 × 10-4Next, LiF was deposited at a rate of 0.1A/s and a thickness of 3nm, and then an Al electrode was deposited at a rate of 2A/s and a thickness of 150 nm.
Comparative example 1
Same as example 1, except that n-hexanol was not added.
The photovoltaic performance of the binary devices prepared in examples 1-6 and comparative example 1 was determined as shown in the following table:
testing a light source: spectral distribution AM1.5G, illumination intensity of 1000w/m2Zolix SS150 solar simulator;
the data acquisition equipment: from a digital source table of Keithly model 2400.
Figure BDA0003130313250000082
Figure BDA0003130313250000091
It can be seen that due to the addition of the n-hexanol and the 2-hydroxy octane, the device performance is greatly improved compared with that of the original binary battery, the conversion efficiency, the short-circuit current and the filling factor are improved, wherein the n-hexanol is favorable for promoting the crystallization of the original binary system material and improving the appearance of an active layer compared with the 2-hydroxy octane, has a stronger improvement effect on the current parameters and the filling factor in the device, and is more favorable for improving the short-circuit current.
Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.

Claims (10)

1. Full small molecule organic solar cell based on novel additive, including base plate, hole transport layer, active layer, electron transport layer and metal electrode, its characterized in that: the active material is coated on the hole transport layer to form the active layer, the active material comprises a donor, an acceptor and an alcohol additive, and the chemical formula of the alcohol additive is CxH2x+2O, wherein x is 5 to 14.
2. The new additive based all small molecule organic solar cell of claim 1, characterized in that: the donor is BTR and the acceptor isPC71BM。
3. The new additive based all small molecule organic solar cell of claim 1, characterized in that: the mass ratio of the donor to the acceptor is 2:1-1: 5.
4. The new additive based all small molecule organic solar cell of claim 1, characterized in that: the thickness of the active layer is 50-200 nm.
5. The method for preparing a full small molecule organic solar cell according to any one of claims 1 to 4, characterized by comprising the following steps:
s1, adding a donor, an acceptor and an alcohol additive into a solvent, and uniformly stirring at room temperature to obtain an active material for later use;
s2, cleaning the substrate, and carrying out plasma ozone treatment;
s3, spin-coating PEDOT on the substrate treated by the ozone: PSS, forming a hole transport layer, and then carrying out thermal annealing treatment;
s4, spin-coating an active material on the hole transport layer to form an active layer, and then carrying out solvent annealing treatment;
and S5, sequentially evaporating an electron transport layer material LiF and a metal electrode material on the active layer to obtain the solar cell.
6. The method for preparing a full small molecule organic solar cell according to claim 5, wherein S1 specifically comprises: adding a donor, an acceptor and an alcohol additive into a solvent, and stirring at room temperature for 20-28h to obtain the active material, wherein the mass ratio of the donor to the acceptor is 2:1-1:5, and the alcohol additive accounts for 0.3-0.5% of the total mass of the donor and the acceptor.
7. The method for preparing a full small molecule organic solar cell according to claim 5, wherein S2 specifically comprises: the method comprises the steps of firstly performing pre-ultrasonic treatment on the ITO conductive glass by using ethanol, then sequentially performing ultrasonic cleaning on the ITO conductive glass by using detergent water, ultrapure water, acetone, isopropanol and ethanol, then blow-drying the ITO conductive glass by using a nitrogen gun, and performing plasma ozone treatment on the blow-dried ITO glass for 30 min.
8. The method for preparing a full small molecule organic solar cell according to claim 5, wherein S3 specifically comprises: and (3) placing the ITO glass treated by the ion ozone in a nitrogen environment for spin coating PEDOT, PSS, wherein the spin coating speed is 2000-6000rpm, the spin coating time is 20-60 seconds, and then placing the ITO glass on a heating platform for annealing for 30-60min, and the annealing temperature is 100-200 ℃.
9. The method for preparing a full small molecule organic solar cell according to claim 5, wherein S4 specifically comprises: and spin-coating the active material on the PEDOT/PSS electron transport layer at the spin-coating speed of 1000-.
10. The method for preparing a full small molecule organic solar cell according to claim 5, wherein S5 specifically comprises: putting the sheet coated with the active layer into an evaporation chamber of an organic vapor deposition system, putting an electron transport layer material LiF and a cathode electrode material Al, closing the chamber door, and vacuumizing to 5 × 10-4Then, the evaporation of LiF is performed at a rate of 0.1A/s and a thickness of 1-5nm, and then the evaporation of Al electrode is performed at a rate of 1-5A/s and a thickness of 100-200 nm.
CN202110701873.5A 2021-06-24 2021-06-24 All-small-molecule organic solar cell based on novel additive and preparation method thereof Pending CN113611800A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110701873.5A CN113611800A (en) 2021-06-24 2021-06-24 All-small-molecule organic solar cell based on novel additive and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110701873.5A CN113611800A (en) 2021-06-24 2021-06-24 All-small-molecule organic solar cell based on novel additive and preparation method thereof

Publications (1)

Publication Number Publication Date
CN113611800A true CN113611800A (en) 2021-11-05

Family

ID=78303666

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110701873.5A Pending CN113611800A (en) 2021-06-24 2021-06-24 All-small-molecule organic solar cell based on novel additive and preparation method thereof

Country Status (1)

Country Link
CN (1) CN113611800A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114744127A (en) * 2022-03-23 2022-07-12 华南理工大学 Method for regulating and controlling longitudinal morphology of organic solar cell through solvent annealing post-treatment

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108206240A (en) * 2017-12-07 2018-06-26 电子科技大学 Efficient organic solar batteries and preparation method
CN110752298A (en) * 2019-10-25 2020-02-04 常州大学 Organic solar cell active layer based on hydroxypyrimidine derivative additive and preparation method thereof
CN111883672A (en) * 2020-08-26 2020-11-03 中国科学院重庆绿色智能技术研究院 Method for improving photoelectric efficiency of all-small-molecule organic solar cell by finely adjusting concentration of active layer raw solution
CN112802966A (en) * 2020-12-23 2021-05-14 中国科学院重庆绿色智能技术研究院 Full-small-molecule organic solar cell and preparation method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108206240A (en) * 2017-12-07 2018-06-26 电子科技大学 Efficient organic solar batteries and preparation method
CN110752298A (en) * 2019-10-25 2020-02-04 常州大学 Organic solar cell active layer based on hydroxypyrimidine derivative additive and preparation method thereof
CN111883672A (en) * 2020-08-26 2020-11-03 中国科学院重庆绿色智能技术研究院 Method for improving photoelectric efficiency of all-small-molecule organic solar cell by finely adjusting concentration of active layer raw solution
CN112802966A (en) * 2020-12-23 2021-05-14 中国科学院重庆绿色智能技术研究院 Full-small-molecule organic solar cell and preparation method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114744127A (en) * 2022-03-23 2022-07-12 华南理工大学 Method for regulating and controlling longitudinal morphology of organic solar cell through solvent annealing post-treatment

Similar Documents

Publication Publication Date Title
CN111430544B (en) Perovskite solar cell based on organic material mixed doping and preparation method thereof
CN110335945B (en) Double-electron-transport-layer inorganic perovskite solar cell and manufacturing method and application thereof
CN108389969B (en) Green solvent system and mixed solution for preparing perovskite layer of perovskite solar cell
CN108440394B (en) Fullerene electron transport layer material and perovskite solar cell formed by same
CN112802966A (en) Full-small-molecule organic solar cell and preparation method thereof
CN100583489C (en) Preparation method of polymer solar battery
CN111883659A (en) Efficient ternary organic solar cell prepared based on step-by-step deposition method
CN106410037A (en) Small organic molecule donor material based double-junction solar cell device and preparation method thereof
CN113363279A (en) High-efficiency interconnection layer and double-junction perovskite/organic tandem solar cell thereof
CN110649165A (en) Perovskite battery with tetraphenylbiphenyldiamine derivative as hole transport material
CN113611800A (en) All-small-molecule organic solar cell based on novel additive and preparation method thereof
CN113224242A (en) Organic solar cell preparation method for improving shape thermal stability of active layer
CN109378388B (en) Efficient ternary organic solar cell and preparation method thereof
CN109851571B (en) Conjugated organic small molecule interface modification material, preparation method and organic solar cell formed by conjugated organic small molecule interface modification material
CN112885967B (en) Double-layer organic solar cell based on delayed fluorescent material and preparation method
CN110931644B (en) Ternary organic solar cell and preparation method thereof
CN114824101A (en) Star-molecule-based ternary organic solar cell and preparation method thereof
CN109935698B (en) In2Se3Organic solar cell as hole transport layer and method for manufacturing the same
CN110993802A (en) Polymer solar cell based on surface modified cathode buffer layer
CN109390474A (en) A method of improving inverted structure perovskite solar battery open-circuit voltage and fill factor
CN111092156B (en) Perovskite solar cell and preparation method thereof
CN111430543B (en) Perovskite solar cell based on hole transport layer and preparation method thereof
CN116056470A (en) High-efficiency organic solar cell prepared by solid additive auxiliary step-by-step deposition method
CN117858524A (en) Active layer of ternary quasi-planar heterojunction organic solar cell and application thereof
CN113707809A (en) Organic solar device electron transport layer composition, organic solar device and preparation method

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination