JPS6260272A - Solar battery - Google Patents
Solar batteryInfo
- Publication number
- JPS6260272A JPS6260272A JP60200031A JP20003185A JPS6260272A JP S6260272 A JPS6260272 A JP S6260272A JP 60200031 A JP60200031 A JP 60200031A JP 20003185 A JP20003185 A JP 20003185A JP S6260272 A JPS6260272 A JP S6260272A
- Authority
- JP
- Japan
- Prior art keywords
- solar cell
- capacitor
- electrode
- solar battery
- lower electrode
- 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
Links
- 239000003990 capacitor Substances 0.000 claims abstract description 88
- 239000010409 thin film Substances 0.000 claims abstract description 9
- 210000004027 cell Anatomy 0.000 claims description 87
- 210000005056 cell body Anatomy 0.000 claims description 11
- 238000000034 method Methods 0.000 abstract description 12
- 229910021417 amorphous silicon Inorganic materials 0.000 description 23
- 239000000758 substrate Substances 0.000 description 9
- 239000011521 glass Substances 0.000 description 8
- 239000004065 semiconductor Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 3
- 229910000077 silane Inorganic materials 0.000 description 3
- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Chemical compound P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- ZOCHARZZJNPSEU-UHFFFAOYSA-N diboron Chemical compound B#B ZOCHARZZJNPSEU-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229910000073 phosphorus hydride Inorganic materials 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
- H01L27/142—Energy conversion devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/0445—PV modules or arrays of single PV cells including thin film solar cells, e.g. single thin film a-Si, CIS or CdTe solar cells
- H01L31/046—PV modules composed of a plurality of thin film solar cells deposited on the same substrate
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Sustainable Energy (AREA)
- Electromagnetism (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Photovoltaic Devices (AREA)
Abstract
Description
【発明の詳細な説明】 〔発明の技術分野〕 この発明は太陽電池に関するものである。[Detailed description of the invention] [Technical field of invention] This invention relates to solar cells.
太陽電池は、ガラス基板面に形成された表面側透明電極
とこの表面側透明電極と対向する裏面側電極との間に光
起電層を設けたもので、この太陽電池は、小型電子式計
算機や電子腕時計等の小型電子機器の電源電池として広
く使用されている。A solar cell is one in which a photovoltaic layer is provided between a front transparent electrode formed on a glass substrate and a back electrode opposing the front transparent electrode. It is widely used as a power source battery for small electronic devices such as watches and electronic watches.
ところで、太陽電池は、外部光の照度の変化によって発
電電圧が変動するために、安定した電源電圧を得るため
には、太陽電池の出力電圧を充電用コンデンサと電圧調
整用ダイオードとからなるレギュレータによって調整し
てやる必要がある。By the way, the generated voltage of solar cells fluctuates due to changes in the illuminance of external light, so in order to obtain a stable power supply voltage, the output voltage of the solar cell must be controlled by a regulator consisting of a charging capacitor and a voltage adjustment diode. I need to make adjustments.
しかしながら、従来は、太陽電池と電子回路部（例えば
しＳｔチップ）とを接続するラインにコンデンサとダイ
オード（一般には発光ダイオード）とを並列に接続して
レギュレータを構成しているために、電子機器の組立て
に際して太陽電池と電子回路部とを接続するラインにコ
ンデンサを外付は接続しなければならず、そのために電
子機器の組立てに手間がかかるという問題をもっていた
。However, conventionally, a regulator is configured by connecting a capacitor and a diode (generally a light emitting diode) in parallel to the line connecting the solar cell and the electronic circuit section (for example, a St chip), which makes it difficult for electronic equipment to operate. When assembling the electronic device, an external capacitor must be connected to the line connecting the solar cell and the electronic circuit section, which poses a problem in that it takes time and effort to assemble the electronic device.
（発明の目的〕
この発明は上記のような実情にかんがみてなされたもの
であって、その目的とするところは、充重用コンデンサ
を組込んだ太陽電池を提供することにより、電子機器の
組立てに際して太陽電池と電子回路部とを接続するライ
ンにコンデンサを外付は接続する必要をなくして、電子
機器の組立て工程を簡素化することにある。(Object of the Invention) This invention has been made in view of the above-mentioned circumstances, and its purpose is to provide a solar cell incorporating a charging capacitor, thereby improving the ease of assembling electronic equipment. The purpose of this invention is to simplify the assembly process of electronic equipment by eliminating the need to externally connect a capacitor to the line connecting the solar cell and the electronic circuit section.
すなわち、この発明は、表面側透明電極と裏面側電極と
の間に光起電層を設けた太陽電池本体の裏面に、薄膜状
の充電用コンデンサを形成したものであり、このように
太陽電池に充電用コンデンサを組込んでおけば、電子機
器の組立てに際して太陽電池と電子回路部とを接続する
ラインにコンデンサを外付は接続する必要はないから、
電子機器の組立て工程を簡素化することができる。That is, in this invention, a thin film charging capacitor is formed on the back surface of a solar cell body in which a photovoltaic layer is provided between a front side transparent electrode and a back side electrode. If a charging capacitor is built in, there is no need to connect an external capacitor to the line connecting the solar cell and the electronic circuit when assembling electronic equipment.
The assembly process of electronic equipment can be simplified.
以下この発明の実施例を図面を参照して説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第１図〜第３図はこの発明の第１の実施例を示したもの
で、第１図において図中１は表面側透明電極と裏面側電
極との間に光起電層を設けた太陽電池本体であり、この
太陽電池本体１は、例えば３個の太陽電池部１ａ、１ｂ
、１ｃからなっている。この太陽電池本体１の構成を説
明すると、２はガラス基板であり、このガラス基板２の
下面には、３個の表面側透明電極（正極側電極）３．３
が配列形成されている。４は前記ガラス基板２の透明電
極形成面に形成された光起電層であり、この光起電層４
は、ｎ型アモルファスシリコン層とｉ型アモルファスシ
リコン層とｎ型アモルファスシリコン層とを積層した構
成となっている。５゜５は前記光起電層４を挟んで各表
面側透明電極３゜３と対向する裏面側電極（負極側電極
）であり、各太陽電池部１ａ、Ｉｂ、ｌｃは、前記表面
側透明電極３と光起電層４と裏面側電極５とによって形
成されている。また、前記各裏面側電極５，５のうち一
端側の第１太陽電池部１ａの電極５は、この第１太陽電
池部１ａに隣接する中央の第２太陽電池部１ｂの表面側
透明電極３と接続され、また第２の太陽電池部１の電極
５は、他端側の第３太陽電池部１Ｇの表面側透明電極３
Ｃと接続されており、これによって各太陽電池部１ａ、
１ｂ。Figures 1 to 3 show a first embodiment of the present invention. This solar cell main body 1 includes, for example, three solar cell parts 1a and 1b.
, 1c. To explain the structure of this solar cell main body 1, 2 is a glass substrate, and the lower surface of this glass substrate 2 has three front side transparent electrodes (positive side electrodes) 3.
are formed into an array. 4 is a photovoltaic layer formed on the transparent electrode forming surface of the glass substrate 2;
has a structure in which an n-type amorphous silicon layer, an i-type amorphous silicon layer, and an n-type amorphous silicon layer are laminated. 5゜5 is a back side electrode (negative electrode side electrode) facing each front side transparent electrode 3゜3 with the photovoltaic layer 4 in between, and each solar cell section 1a, Ib, lc is connected to the front side transparent It is formed by an electrode 3, a photovoltaic layer 4, and a back side electrode 5. Moreover, the electrode 5 of the first solar cell section 1a on one end side among the back side electrodes 5, 5 is the front side transparent electrode 3 of the central second solar cell section 1b adjacent to the first solar cell section 1a. , and the electrode 5 of the second solar cell section 1 is connected to the front side transparent electrode 3 of the third solar cell section 1G on the other end side.
C, and thereby each solar cell section 1a,
1b.
１Ｃを第２図に示すように直列に接続した太陽電池本体
１が構成されている。また、第１図および第２図におい
て、Ａ、Ｂは太陽電池の端子であり、正極側端子Ａは第
１太陽電池部１ａの表面側透明電極３から導出され、負
極側端子Ｂは第３太陽電池部１Ｃの裏面側電極５から導
出されている。A solar cell main body 1 is constructed by connecting 1C in series as shown in FIG. In addition, in FIGS. 1 and 2, A and B are terminals of the solar cell, the positive terminal A is led out from the front transparent electrode 3 of the first solar cell section 1a, and the negative terminal B is the third terminal. It is led out from the back side electrode 5 of the solar cell section 1C.
一方、第１図において、６は前記太陽電池本体１の裏面
に一体に形成された薄膜状の充電用コンデンサであり、
このコンデンサ６は、太陽電池本体１の各太陽電池部ｌ
ａ、 １ｂ、 １ｃの裏面に形成された実質３個のコン
デンサ部６ａ、６ｂ、６Ｃからなっている。この充電用
コンデンサ６は、前記太陽電池本体１の裏面側電極５，
５を一方の電極としたもので、各コンデンサ部６ａ、６
ｂ。On the other hand, in FIG. 1, 6 is a thin film charging capacitor integrally formed on the back surface of the solar cell main body 1,
This capacitor 6 is connected to each solar cell section l of the solar cell main body 1.
It essentially consists of three capacitor parts 6a, 6b, and 6C formed on the back surfaces of capacitors a, 1b, and 1c. This charging capacitor 6 includes a back electrode 5 of the solar cell main body 1,
5 as one electrode, and each capacitor part 6a, 6
b.
６Ｃは、各太陽電池部１ａ、ｉｂ、 １ｃの裏面側電極
５，５と、この各裏面側電極５，５に共通して対向する
下部電極８と、前記裏面側電極５，５と下部電極８との
間に介在された絶縁層７ａとからなっており、前記下部
電極８は、第１太陽電池５一
部１ａの表面側透明電極３から導出された正極側端子Ａ
と接続され、また各コンデンサ部６ａ、６ｂ、６ｃの上
部電極は、これを各太陽電池部１ａ。6C denotes the back side electrodes 5, 5 of each of the solar cell parts 1a, ib, 1c, the lower electrode 8 that commonly faces each of the back side electrodes 5, 5, and the back side electrodes 5, 5 and the lower electrode. 8, and an insulating layer 7a interposed between the lower electrode 8 and the positive electrode side terminal A led out from the front side transparent electrode 3 of the first solar cell 5 part 1a.
The upper electrodes of each capacitor section 6a, 6b, and 6c are connected to each solar cell section 1a.
１ｂ、１ｃの裏面側電極５．５と共用したことによって
各太陽電池部１ａ、１ｂ、１ｃの負極側にそれぞれ接続
されている。なお、前記絶縁層７ａは、絶縁体としての
性質がある１型アモルファスシリコンからなっている。Since it is shared with the back side electrode 5.5 of 1b, 1c, it is connected to the negative electrode side of each solar cell part 1a, 1b, 1c, respectively. Note that the insulating layer 7a is made of type 1 amorphous silicon, which has properties as an insulator.
つまり、各コンデンサ部６ａ、６ｂ、６ｃは、第２図に
示すように太陽電池本体１の各太陽電池部１ａ、 １ｂ
、 １ｃに並列に接続されているもので、一端側の第１
コンデンサ部６ａは第１太陽電池部１ａに対して並列に
接続され、中央の第２コンデンサ部６ｂは第１および第
２の太陽電池部１ａ、１ｂに対して並列に接続され、他
端側の第３コンデンサ部６Ｃは第１゜第２．第３の太陽
電池部１ａ、１ｂ、１ｃに対して並列に接続されている
。That is, each capacitor section 6a, 6b, 6c is connected to each solar cell section 1a, 1b of the solar cell main body 1, as shown in FIG.
, 1c are connected in parallel, and the first
The capacitor section 6a is connected in parallel to the first solar cell section 1a, and the second capacitor section 6b in the center is connected in parallel to the first and second solar cell sections 1a and 1b. The third capacitor section 6C has the first and second capacitor sections. It is connected in parallel to the third solar cell sections 1a, 1b, and 1c.
また、第１図において、９は前記充電用コンデンサ６の
裏面に形成された薄膜状の補助コンデンサである。この
補助コンデンサ９は、前記充電用コンデンサ６の補助と
、太陽電池本体１が受光できずに発電を停止したときに
電子機器の電子回路にメモリ保持電力を供給するバック
アップ電源とを兼ねるもので、この補助コンデンサ９は
、前記充電用コンデンサ６の下部電極８と、この下部電
極８と対向する補助コンデンサ下部電極１０との間に絶
縁層７ｂを介在させたもので、補助コンデンサ下部電極
１０は、前記負極側端子Ｂと接続されている。なお、前
記絶縁層７ｂは、充電用コンデンサ６の絶縁層７ａと同
じ１型アモルファスシリコンからなっている。この補助
コンデンサ９は、その上部電極（電圧調整用コンデンサ
６の下部電極）８が前記正極側端子Ａに接続され、補助
コンデンサ下部電極１０が前記負極側端子Ｂに接続され
ていることによって、太陽電池本体１に対して第２図に
示すように並列に接続されている。Further, in FIG. 1, reference numeral 9 denotes a thin film-like auxiliary capacitor formed on the back surface of the charging capacitor 6. This auxiliary capacitor 9 serves both as an auxiliary for the charging capacitor 6 and as a backup power source that supplies memory retention power to the electronic circuit of the electronic device when the solar cell main body 1 cannot receive light and stops generating electricity. This auxiliary capacitor 9 has an insulating layer 7b interposed between the lower electrode 8 of the charging capacitor 6 and the auxiliary capacitor lower electrode 10 facing the lower electrode 8, and the auxiliary capacitor lower electrode 10 is It is connected to the negative terminal B. The insulating layer 7b is made of the same type 1 amorphous silicon as the insulating layer 7a of the charging capacitor 6. This auxiliary capacitor 9 has its upper electrode (lower electrode of the voltage adjustment capacitor 6) connected to the positive terminal A, and the auxiliary capacitor lower electrode 10 connected to the negative terminal B, so that it can be It is connected in parallel to the battery main body 1 as shown in FIG.
第３図は上記太陽電池の構成を模式的に示したもので、
この太陽電池は次のようにして製造される。まず、ガラ
ス基板２面に酸化インジウム等の透明電極材を印刷して
透明電極３を形成し、このガラス基板２の透明電極形成
面上に、ｎ型アモルファスシリコン層と、ｉ型アモルフ
ァスシリコン層と、ｎ型アモルファスシリコン層とを順
次積層して光起電層４を形成する。なお、各アモルファ
スシリコン層は例えばグロー放電法によって形成する。Figure 3 schematically shows the configuration of the solar cell described above.
This solar cell is manufactured as follows. First, a transparent electrode material such as indium oxide is printed on a glass substrate 2 surface to form a transparent electrode 3, and an n-type amorphous silicon layer and an i-type amorphous silicon layer are formed on the transparent electrode formation surface of the glass substrate 2. , an n-type amorphous silicon layer are sequentially laminated to form the photovoltaic layer 4. Note that each amorphous silicon layer is formed by, for example, a glow discharge method.
このグロー放電法は、シラン（Ｓ ｉ Ｈ４）ガスを高
周波電界でグロー放電を生起させて分解し、これを２０
０〜３００℃に加熱した基板面に堆積させてアモルファ
スシリコン層を形成する方法であり、シランガスにｎ型
不純物例えばジボラン（Ｂ２ Ｈ６）ガスを添加すれば
ｎ型アモルファスシリコン層が形成され、シランガスの
みとすれば１型アモルファスシリコン層が形成され、シ
ランガスにｎ型不純物例えばホスフィン（ＰＨａ ）ガ
スを添加すればｎ型アモルファスシリコン層が形成され
る。This glow discharge method decomposes silane (S i H4) gas by generating glow discharge in a high frequency electric field, and then
This is a method of forming an amorphous silicon layer by depositing it on a substrate surface heated to 0 to 300°C.If an n-type impurity, such as diborane (B2H6) gas, is added to silane gas, an n-type amorphous silicon layer is formed; If so, a type 1 amorphous silicon layer is formed, and if an n-type impurity such as phosphine (PHa) gas is added to silane gas, an n-type amorphous silicon layer is formed.
この光起電層４を形成した後は、その上に銀またはアル
ミニウム等の導電性金属を蒸着して太陽電池本体１の裏
面側電極５を形成する。なお、前記光起電層４は、第２
太陽電池部１ｂおよび第３太陽電池部１Ｃの表面側透明
電極３，３の一端部を露出させるようにこの部分を除い
て形成されており、従って、第１太陽電池部１ａおよび
第２太陽電池部１ｂの裏面側電極５，５は、第１図に示
すように第２太陽電池部１ｂおよび第３太陽電池部１Ｃ
の表面側透明電極３．３上にも蒸着されてこの表面側透
明電極３，３と導通接続される。After forming the photovoltaic layer 4, a conductive metal such as silver or aluminum is deposited thereon to form the back side electrode 5 of the solar cell body 1. Note that the photovoltaic layer 4 is
The solar cell part 1b and the third solar cell part 1C are formed by removing one end part of the surface-side transparent electrodes 3, 3 to expose these parts, so that the first solar cell part 1a and the second solar cell part 1C The back side electrodes 5, 5 of the portion 1b are connected to the second solar cell portion 1b and the third solar cell portion 1C, as shown in FIG.
It is also deposited on the transparent electrodes 3.3 on the front side and is electrically connected to the transparent electrodes 3.3 on the front side.
このようにして太陽電池本体１を形成した後は、その裏
面側電極５，５の上にグロー放電法等により１型アモル
ファスシリコン層を形成し、このｉ型アモルファスシリ
コンからなる絶縁層７ａの上に導電性金属の蒸着により
コンデンサの下部電極８を形成して充電用コンデンサ６
を形成する。次に、前記充電用コンデンサ６の下部電極
８の上にグロー放電法等によりｉ型アモルファスシリコ
ン層を形成し、このｉ型アモルファスシリコンからなる
絶縁層７ｂの上に導電性金属の蒸着により補助コンデン
サ用の下部電極１０を形成して、前記充電用コンデンサ
６の下部電極８と絶縁層７ｂと補助コンデンサ下部電極
１０とからなる補助コンデンサ９を形成する。After forming the solar cell main body 1 in this way, a type 1 amorphous silicon layer is formed on the back side electrodes 5, 5 by a glow discharge method or the like, and on the insulating layer 7a made of this i type amorphous silicon. A lower electrode 8 of the capacitor is formed by vapor deposition of a conductive metal on the charging capacitor 6.
form. Next, an i-type amorphous silicon layer is formed on the lower electrode 8 of the charging capacitor 6 by a glow discharge method or the like, and a conductive metal is deposited on the insulating layer 7b made of the i-type amorphous silicon to form an auxiliary capacitor. Then, the auxiliary capacitor 9 consisting of the lower electrode 8 of the charging capacitor 6, the insulating layer 7b, and the auxiliary capacitor lower electrode 10 is formed.
なお、第１図に示した太陽電池本体１の端子Ａ。Note that the terminal A of the solar cell main body 1 shown in FIG.
Ｂは、第１太陽電池部１ａの表面側透明電極３の一部と
、第３太陽電池部１Ｃの裏面側電極５の一部をガラス基
板２面の側縁部に延長させて形成するか、あるいは、第
１太陽電池部１ａの表面側透明電ｔｉ３および第３太陽
電池部１Ｃの裏面側電極５にリード端子を接続して形成
すればよく、また、前記充電用コンデンサ６の下部電極
８と補助コンデンサ９の下部電極１０は、その一部を前
記第１太陽電池部１ａの表面側透明電極３の延長部分と
第３太陽電池部１Ｃの裏面側電極５の延長部分に重ねて
蒸着形成するか、あるいはリード線を介して前記電極端
子Ａ、Ｂとそれぞれ接続すればよい。B is formed by extending a part of the front side transparent electrode 3 of the first solar cell part 1a and a part of the back side electrode 5 of the third solar cell part 1C to the side edge of the glass substrate 2 surface. Alternatively, lead terminals may be connected to the front side transparent electrode ti3 of the first solar cell section 1a and the back side electrode 5 of the third solar cell section 1C, and the lower electrode 8 of the charging capacitor 6 may be formed. The lower electrode 10 of the auxiliary capacitor 9 is formed by vapor deposition so that a part thereof is overlapped with the extended part of the front side transparent electrode 3 of the first solar cell part 1a and the extended part of the back side electrode 5 of the third solar cell part 1C. Alternatively, they may be connected to the electrode terminals A and B respectively via lead wires.
すなわち、この実施例の太陽電池は、上記のように、太
陽電池本体１の裏面に、この太陽電池本体１の裏面側電
極５を上部電極とする薄膜状の充電用コンデンサ６を形
成するとともに、この充電用コンデンサ６の裏面に、こ
の充電用コンデンサ６の下部電極８を上部電極とする薄
膜状の補助コンデンサ９を形成したものであり、このよ
うに太陽電池に前記充電用コンデンサ６および補助コン
デンサ９を組込んでおけば、太陽電池と電子回路部とを
接続するラインに電圧調整用ダイオードを並列に接続す
るだけでレギュレータを構成することができるから、太
陽電池を電源とする電子機器の組立てに際して太陽電池
と電子回路部とを接続するラインに充電用のコンデンサ
を外付は接続する必要はなく、従って電子機器の組立て
工程を簡素化することができる。That is, in the solar cell of this embodiment, as described above, a thin film charging capacitor 6 is formed on the back surface of the solar cell main body 1, with the back electrode 5 of the solar cell main body 1 serving as the upper electrode. A thin film-like auxiliary capacitor 9 is formed on the back surface of this charging capacitor 6, with the lower electrode 8 of this charging capacitor 6 serving as an upper electrode. 9, a regulator can be configured simply by connecting a voltage adjustment diode in parallel to the line connecting the solar cell and the electronic circuit section, making it easier to assemble electronic equipment that uses solar cells as a power source. In this case, there is no need to externally connect a charging capacitor to the line connecting the solar cell and the electronic circuit section, and therefore the assembly process of the electronic device can be simplified.
なお、上記実施例では、太陽電池に充電用コンデンサ６
と補助コンデンサ９とを組込んでいるが、前記補助コン
デンサ９はなくてもよい。In addition, in the above embodiment, the charging capacitor 6 is attached to the solar cell.
and an auxiliary capacitor 9 are incorporated, but the auxiliary capacitor 9 may be omitted.
第４図および第５図はこの発明の第２の実施例を示した
もので、この実施例は、太陽電池本体１の裏面に形成し
た充電用コンデンサ６の各コンデンサ部６ａ、６ｂ、６
ｃを直列に接続するとともにこの各コンデンサ部６ａ、
６ｂ、６ｃを太陽電池本体１の各太陽電池部１ａ、１ｂ
、１ｃに対してそれぞれ並列に接続したものであって、
その他の構成は前記第１の実施例と同じになっている。4 and 5 show a second embodiment of the present invention, in which each capacitor portion 6a, 6b, 6 of a charging capacitor 6 formed on the back surface of the solar cell body 1 is
c are connected in series, and each capacitor section 6a,
6b and 6c are the solar cell parts 1a and 1b of the solar cell main body 1.
, 1c are connected in parallel to each other,
The other configurations are the same as those of the first embodiment.
すなわち、この実施例の太陽電池は、太陽電池本体１の
裏面に形成された充電用コンデンサ６の下部電極８を第
４図に示すように各コンデンサ部６ａ、６ｂ、６ｃ毎に
分割し、第２および第３のコンデンサ部６ｂ、６ｃの下
部電極８．８を隣接する第１および第２のコンデンサ部
（３ａ、５ｂの上部電極（第１および第２の太陽電池部
１ａ、１ｂの裏面側電極）５．５に接続したもので、各
コンデンサ部６ａ、６ｂ、６ｃは各太陽電池部１ａ。That is, in the solar cell of this embodiment, the lower electrode 8 of the charging capacitor 6 formed on the back surface of the solar cell main body 1 is divided into capacitor parts 6a, 6b, and 6c as shown in FIG. The lower electrodes 8.8 of the second and third capacitor sections 6b and 6c are connected to the adjacent first and second capacitor sections (the upper electrodes of 3a and 5b (the back side of the first and second solar cell sections 1a and 1b). (electrode) 5.5, and each capacitor section 6a, 6b, 6c is connected to each solar cell section 1a.
１ｂ、１ｃに対して第５図に示すように接続されている
。1b and 1c are connected as shown in FIG.
また、第６図〜第８図はこの発明の第３の実施例を示し
たもので、この実施例は、太陽電池に充電用コンデンサ
と電圧調整用のダイオードとを設けて太陽電池自体にレ
ギュレータを構成したものである。Further, FIGS. 6 to 8 show a third embodiment of the present invention. In this embodiment, a solar cell is provided with a charging capacitor and a voltage regulating diode, and a regulator is installed in the solar cell itself. It is composed of
この実施例の太陽電池について説明すると、第６図にお
いて、１は太陽電池本体、６は太陽電池本体１の裏面に
形成された充電用コンデンサであり、これらは前記第１
の実施例と同じ構成となっている。１１は前記充電用コ
ンデンサ６の裏面に形成された薄膜状の電圧調整用ダイ
オードである。To explain the solar cell of this example, in FIG.
It has the same configuration as the embodiment. Reference numeral 11 denotes a thin film voltage adjustment diode formed on the back surface of the charging capacitor 6.
このダイオード１１は、前記充電用コンデンサ６の下部
電極８を一方の電極（上部電極）とするもので、このダ
イオード１１は、前記充電用コンデンサ６の下部電極８
と、この下部電極８と対向するダイオード下部電極１３
との間に、半導体層１２を設けた構造となっている。な
お、前記半導体層１２は、ｎ型アモルファスシリコン層
とｎ型アモルファスシリコン層とを積層した構造となっ
ている。また、ダイオード１１の下部電極１３は前記負
極側端子Ｂと接続されている。つまり、このダイオード
１１は、その上部電極を兼ねる充電用コンデンサ６の下
部電極８が前記第１の実施例と同様に正極側端子Ａと接
続され、ダイオード下部電極１３が前記負極側端子Ｂと
接続されているこ、とによって、太陽電池本体１に対し
て第７図に示すように並列に接続されている。This diode 11 uses the lower electrode 8 of the charging capacitor 6 as one electrode (upper electrode);
and a diode lower electrode 13 facing this lower electrode 8.
It has a structure in which a semiconductor layer 12 is provided between the two. Note that the semiconductor layer 12 has a structure in which an n-type amorphous silicon layer and an n-type amorphous silicon layer are stacked. Further, the lower electrode 13 of the diode 11 is connected to the negative terminal B. That is, in this diode 11, the lower electrode 8 of the charging capacitor 6, which also serves as its upper electrode, is connected to the positive terminal A as in the first embodiment, and the diode lower electrode 13 is connected to the negative terminal B. As a result, they are connected in parallel to the solar cell main body 1 as shown in FIG.
第８図はこの実施例の太陽電池の構造を模式的に示した
もので、前記半導体層１２は、充電用コンデンサ６の下
部電極８上にグロー放電法によって形成されたｎ型アモ
ルファスシリコン層とｎ型アモルファスシリコン層とか
らなっており、また電圧調整用ダイオード１１の下部電
極１３は、半導体層１２の上に導電性金属を蒸着して形
成されている。FIG. 8 schematically shows the structure of the solar cell of this example, in which the semiconductor layer 12 is an n-type amorphous silicon layer formed on the lower electrode 8 of the charging capacitor 6 by a glow discharge method. The lower electrode 13 of the voltage adjusting diode 11 is formed by depositing a conductive metal on the semiconductor layer 12.
しかして、この実施例では、太陽電池本体１の裏面に、
この太陽電池本体１の裏面側電極５を上部電極とする薄
膜状の充電用コンデンサ６を形成するとともに、この充
電用コンデンサ６の裏面に、このコンデンサ６の下部電
極８を上部電極とする薄膜状の電圧調整用ダイオード１
１を形成しているから、太陽電池自体にコンデンサとダ
イオードからなるレギュレータを構成して太陽電池の出
力電圧を一定にすることができる。従って、この太陽電
池を用いれば、電子機器の組立てに際して太陽電池と電
子回路部とを接続するラインに充電用のコンデンサを外
付は接続する必要がなくなるだけでなく、電圧調整用の
ダイオードを外付は接続する必要もなくなるから、小型
電子機器の組立て工程をさらに簡素化することができる
。Therefore, in this embodiment, on the back side of the solar cell body 1,
A thin film charging capacitor 6 with the back side electrode 5 of this solar cell body 1 as an upper electrode is formed, and a thin film charging capacitor 6 with the lower electrode 8 of this capacitor 6 as an upper electrode is formed on the back surface of this charging capacitor 6. Voltage adjustment diode 1
1, the output voltage of the solar cell can be made constant by configuring a regulator consisting of a capacitor and a diode in the solar cell itself. Therefore, if this solar cell is used, not only will it be unnecessary to connect an external charging capacitor to the line connecting the solar cell and the electronic circuit when assembling electronic equipment, but it will also be possible to remove the voltage adjustment diode. Since there is no need to connect the attachments, the assembly process of small electronic devices can be further simplified.
なお、上記第３の実施例では、電圧調整用ダイオード１
１の半導体層１２をアモルファスシリコンで形成してい
るが、この半導体層１２は多結晶シリコンや他の半導体
で形成してもよい。In addition, in the third embodiment, the voltage regulating diode 1
Although the first semiconductor layer 12 is made of amorphous silicon, this semiconductor layer 12 may be made of polycrystalline silicon or other semiconductors.
また、上記各実施例では、太陽電池本体１の光起電層４
をアモルファスシリコンで形成しているが、この光起電
層４は多結晶シリコン等で形成してもよいし、また光起
電層４はｐ層とｎ層のみで形成してもよい。また、充電
用コンデンサ６の絶縁層７ａは、１型アモルファスシリ
コンに限らず・他の絶縁性物質で形成してもよい。これ
は、第１の実施例における補助コンデンサ９の絶縁層７
ｂも同様である。さらに、上記各実施例では、充電用コ
ンデンサ６の表面側の電極を太陽電池本体１の裏面側電
極５と兼用しているが、この充電用コンデンサ６の表面
側電極は太陽電池本体１の裏面側電極５と別にしてもよ
く、その場合はコンデンサ６の表面側電極と太陽電池本
体１の裏面側電極５との間に絶縁層を介在させてもよい
し、また太陽電池本体１および充電用コンデンサ６の構
造も上記実施例に限られるものではない。Further, in each of the above embodiments, the photovoltaic layer 4 of the solar cell body 1
Although the photovoltaic layer 4 is formed of amorphous silicon, it may be formed of polycrystalline silicon or the like, or the photovoltaic layer 4 may be formed of only a p layer and an n layer. Further, the insulating layer 7a of the charging capacitor 6 is not limited to type 1 amorphous silicon, but may be formed of other insulating materials. This is similar to the insulating layer 7 of the auxiliary capacitor 9 in the first embodiment.
The same applies to b. Furthermore, in each of the above embodiments, the front side electrode of the charging capacitor 6 is also used as the back side electrode 5 of the solar cell body 1; The side electrode 5 may be separated from the side electrode 5. In that case, an insulating layer may be interposed between the front side electrode of the capacitor 6 and the back side electrode 5 of the solar cell body 1, or the solar cell body 1 and the charging The structure of the capacitor 6 is also not limited to the above embodiment.
この発明は、太陽電池本体の裏面に薄膜状の充電用コン
デンサを形成したものであり、このように太陽電池に充
電用コンデンサを組込んでおけば、小型電子機器の組立
てに際して太陽電池と電子回路部とを接続するラインに
充電用のコンデンサを外付は接続する必要はないから、
小型電子機器の組立て工程を簡素化することができる。In this invention, a thin film charging capacitor is formed on the back side of the solar cell main body, and by incorporating the charging capacitor into the solar cell in this way, the solar cell and electronic circuit can be easily assembled when assembling small electronic equipment. There is no need to connect an external charging capacitor to the line that connects the
The assembly process of small electronic devices can be simplified.
第１図〜第３図はこの発明の第１の実施例を示したもの
で、第１図および第２図は太陽電池の断面図および等価
回路図、第３図は太陽電池の構造の模式図である。第４
図および第５図はこの発明の第２の実施例を示す太陽電
池の断面図および等価回路図である。第６図〜第８図は
この発明の第３の実施例を示したもので、第６図および
第７図は太陽電池の断面図および等価回路図、第８図は
太陽電池の構造の模式図である。
１・・・太陽電池本体、２・・・ガラス基板、３・・・
表面側透明電極、４・・・光起電層、５・・・裏面側電
極、６・・・充電用コンデンサ、７ａ・・・絶縁層、８
・・・下部電極、９・・・補助コンデンサ、７ｂ・・・
絶縁層、１０・・・補助コンデンサ下部電極、Ａ、Ｂ・
・・端子、１２・・・電圧調整用ダイオード、１３・・
・半導体層、１４・・・ダイオード下部電極。
出願人代理人 弁理士 鈴江武彦
第１図
第２図
第３図
第４図
第５図
第６図
第７図1 to 3 show a first embodiment of the present invention. FIGS. 1 and 2 are a cross-sectional view and an equivalent circuit diagram of a solar cell, and FIG. 3 is a schematic diagram of the structure of a solar cell. It is a diagram. Fourth
FIG. 5 is a sectional view and an equivalent circuit diagram of a solar cell showing a second embodiment of the present invention. 6 to 8 show a third embodiment of the present invention, FIGS. 6 and 7 are a cross-sectional view and an equivalent circuit diagram of a solar cell, and FIG. 8 is a schematic diagram of the structure of a solar cell. It is a diagram. 1...Solar cell body, 2...Glass substrate, 3...
Front side transparent electrode, 4... Photovoltaic layer, 5... Back side electrode, 6... Charging capacitor, 7a... Insulating layer, 8
...lower electrode, 9...auxiliary capacitor, 7b...
Insulating layer, 10... Auxiliary capacitor lower electrode, A, B.
...Terminal, 12...Voltage adjustment diode, 13...
- Semiconductor layer, 14... diode lower electrode. Applicant's Representative Patent Attorney Takehiko Suzue Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7
Claims (2)
設けた太陽電池本体の裏面に、薄膜状の充電用コンデン
サを形成したことを特徴とする太陽電池。(1) A solar cell characterized in that a thin film charging capacitor is formed on the back side of a solar cell body in which a photovoltaic layer is provided between a front side transparent electrode and a back side electrode.
と、この裏面側電極と対向する下部電極と、前記裏面側
電極とコンデンサ電極との間に介在された絶縁層とから
なつており、前記下部電極は、前記太陽電池本体の表面
側透明電極から導出された端子と接続されていることを
特徴とする特許請求の範囲第１項記載の太陽電池。(2) The charging capacitor consists of a back electrode of the solar cell main body, a lower electrode facing the back electrode, and an insulating layer interposed between the back electrode and the capacitor electrode, 2. The solar cell according to claim 1, wherein the lower electrode is connected to a terminal led out from a front-side transparent electrode of the solar cell main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60200031A JPS6260272A (en) | 1985-09-10 | 1985-09-10 | Solar battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60200031A JPS6260272A (en) | 1985-09-10 | 1985-09-10 | Solar battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6260272A true JPS6260272A (en) | 1987-03-16 |
Family
ID=16417667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60200031A Pending JPS6260272A (en) | 1985-09-10 | 1985-09-10 | Solar battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6260272A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2453606A (en) * | 2007-10-11 | 2009-04-15 | Western Lights Semiconductor Corp | Solar power source |
| WO2012144534A1 (en) * | 2011-04-19 | 2012-10-26 | 株式会社日立製作所 | Capacitor-integrated solar cell having electricity storage function |
| TWI392101B (en) * | 2008-03-31 | 2013-04-01 | Univ Nat Taiwan Normal | A solar battery with an anti-reflecting surface and the manufacturing method thereof |
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| JPS57201089A (en) * | 1981-06-03 | 1982-12-09 | Sanyo Electric Co Ltd | Photoelectromotive force device |
| JPS5914681A (en) * | 1982-07-15 | 1984-01-25 | Matsushita Electric Works Ltd | Solar battery with charge storage function |
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| JPS6191975A (en) * | 1984-10-12 | 1986-05-10 | Matsushita Electric Ind Co Ltd | Energy accumulator |
| JPS61104567A (en) * | 1984-10-25 | 1986-05-22 | Fuji Electric Co Ltd | Power source apparatus using solar cell |
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| JPS57201089A (en) * | 1981-06-03 | 1982-12-09 | Sanyo Electric Co Ltd | Photoelectromotive force device |
| JPS5914681A (en) * | 1982-07-15 | 1984-01-25 | Matsushita Electric Works Ltd | Solar battery with charge storage function |
| JPS6012780A (en) * | 1983-07-01 | 1985-01-23 | Matsushita Electric Ind Co Ltd | Accumulation system solar battery |
| JPS6191975A (en) * | 1984-10-12 | 1986-05-10 | Matsushita Electric Ind Co Ltd | Energy accumulator |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2453606A (en) * | 2007-10-11 | 2009-04-15 | Western Lights Semiconductor Corp | Solar power source |
| JP2009094462A (en) * | 2007-10-11 | 2009-04-30 | Northern Lights Semiconductor Corp | Solar power source and manufacturing method thereof |
| GB2453606B (en) * | 2007-10-11 | 2009-09-02 | Western Lights Semiconductor C | Solar power source |
| TWI392101B (en) * | 2008-03-31 | 2013-04-01 | Univ Nat Taiwan Normal | A solar battery with an anti-reflecting surface and the manufacturing method thereof |
| WO2012144534A1 (en) * | 2011-04-19 | 2012-10-26 | 株式会社日立製作所 | Capacitor-integrated solar cell having electricity storage function |
| JP2012227305A (en) * | 2011-04-19 | 2012-11-15 | Hitachi Ltd | Capacitor-integrated solar cell having electricity storage function |
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