JPS62205672A - Solar battery - Google Patents
Solar batteryInfo
- Publication number
- JPS62205672A JPS62205672A JP61049123A JP4912386A JPS62205672A JP S62205672 A JPS62205672 A JP S62205672A JP 61049123 A JP61049123 A JP 61049123A JP 4912386 A JP4912386 A JP 4912386A JP S62205672 A JPS62205672 A JP S62205672A
- Authority
- JP
- Japan
- Prior art keywords
- solar cell
- glass substrate
- cell
- solar cells
- cells
- 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
- 239000011521 glass Substances 0.000 claims abstract description 17
- 239000000758 substrate Substances 0.000 claims abstract description 15
- 239000002184 metal Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 238000000605 extraction Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 16
- 238000006243 chemical reaction Methods 0.000 abstract description 14
- 238000011144 upstream manufacturing Methods 0.000 abstract description 6
- 239000004065 semiconductor Substances 0.000 abstract description 2
- 229910000577 Silicon-germanium Inorganic materials 0.000 abstract 1
- 229910021417 amorphous silicon Inorganic materials 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical group [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
Classifications
-
- 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
- Y02E10/548—Amorphous silicon PV cells
Landscapes
- Photovoltaic Devices (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
この発明は太陽電池に関し、さらにｇＴａにいえば、照
射太陽光に対して直列状に配設され、おのおの別に出力
を取出すことができるようにした太陽電池に関する。[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to solar cells, and in terms of gTa, solar cells are arranged in series with respect to irradiated sunlight so that output can be extracted separately from each solar cell. Regarding solar cells.
〈従来の技術〉
従来から、新しいエネルギ源としての、太陽電池の聞梵
が進められて３３す、照射太陽光を効率よく電気エネル
ギに変換Ｊることができるものが提供されている。<Prior Art> Solar cells have been developed as a new energy source for some time, and devices that can efficiently convert irradiated sunlight into electrical energy have been provided.
このような太陽電池としては、
■ 中層セル構造のもの、
■ ？！２数個の太陽電池はルを直列に積層形成し、全
体として甲−の出力を取出すようにしたもの（いわゆる
タンデムセル）、および
■ 第２図に承りように、ガラス基板（１１）の背面側
に太陽電池ヒル（１２）を一体内に形成してなる２個の
太陽電池（１３） （１３’）を配置し、照射太陽光に
関して下流側の太陽電池（１３’）として、−に流側太
陽電池材料と等しいか、若しくは小さい「ｑを有づる材
料で構成されたものを使用し、照射太陽光を先ず上流側
の太陽電池（１３）に照射し、上流側の太陽電池を透過
した光を下流側の太陽電池（１３’）に照射し、両太陽
電池（１３） （１３’）から、おのおの別に出力を取
出づようにしたもの（いわゆる４端了構造セル）
があった。Such solar cells include: ■ medium cell structure; ■ ? ! Two or more solar cells are stacked in series to extract the output from the whole (so-called tandem cell), and ■ As shown in Figure 2, the back side of the glass substrate (11) Two solar cells (13) (13') each having a solar cell hill (12) integrally formed on the side are arranged, and the solar cell (13') on the downstream side with respect to irradiated sunlight is arranged to A material made of a material with a q equal to or smaller than the side solar cell material is used, and the irradiated sunlight is first irradiated on the upstream solar cell (13), and then transmitted through the upstream solar cell. There was a cell in which light was irradiated to the solar cell (13') on the downstream side, and the output was taken out separately from both solar cells (13) (13') (so-called four-end structure cell).
く発明が解決しようとづる問題点〉
上記■の４ｆｊ成の太陽電池においては、光吸収波長域
が限られており、照射太陽光スペクトルを有効に電気エ
ネルギに変換づることができないという問題がある。Problems to be Solved by the Invention In the 4FJ solar cell described in (1) above, the light absorption wavelength range is limited, and there is a problem that the irradiated sunlight spectrum cannot be effectively converted into electrical energy. .
また、上記■の構成の太陽電池においては、太陽光が順
次各層の太陽電池セルに照射８れ、電気エネルギに変換
されるので、上記■の構成のものに比べて変換効率が高
くなるのであるが、全体として単一の出力を取出づよう
にしているので、外部に取出１ことがで°きる電流値が
、各太陽電池セルの出力電流値のうち最小の電流値に制
限されてしまうことになる。即ち、上記タンデムセルの
外部取出可能な電流Ｉｎが照射太陽光スペクトルに大さ
く依存づることになり、最適スペクトルからずれると、
変換効率が著しく低下してしまうことになる。したがっ
て、−口中を通してみると、変換効率の変ｖＪ幅が大ぎ
くなってしまうという問題がある。In addition, in the solar cell with the above configuration (■), sunlight irradiates the solar cells in each layer in sequence and is converted into electrical energy, so the conversion efficiency is higher than that with the above configuration (■). However, since a single output is taken out as a whole, the current value that can be taken out to the outside is limited to the minimum current value among the output current values of each solar cell. become. In other words, the electric current In that can be extracted from the tandem cell to the outside greatly depends on the irradiated sunlight spectrum, and if it deviates from the optimal spectrum,
This results in a significant reduction in conversion efficiency. Therefore, there is a problem in that when the liquid is passed through the mouth, the range of variation in conversion efficiency (vJ) becomes large.
さらに、上記■の構成の太１ｉｌ電池においては、上記
■■の構！戊の太陽電池に比べて変換効率が高く、しか
も変換効率の変動幅も小さく＜ｈるのであるが、照射太
陽光、Ｊメよび透過光がそれぞれ各太陽電池（１３）
（１３’）を構成づるガラス基板（１１）に照ｑ４され
ることにより、２凹表面反射が行なわれるので、入ｉＪ
光ロスが大きくなるという問題があるのみならず、ガラ
ス基板（１１）が２枚必要になるので４４利費が嵩むこ
とになるという問題がある。Furthermore, in the thick 1-il battery with the configuration of the above ■■, the structure of the above ■■! The conversion efficiency is higher than that of the conventional solar cell, and the fluctuation range of the conversion efficiency is also small.
(13') is illuminated by the glass substrate (11), which causes two concave surface reflections, so that the input iJ
Not only is there a problem that optical loss increases, but also there is a problem that interest costs increase because two glass substrates (11) are required.
〈発明の目的〉
この発明は上記の問題点に鑑みてなされたものであり、
変換効率を高く維持するとともに、入射光ロスを減少さ
せ、しかも材料費を廉価にすることができる太陽電池を
提供することを目的としＣいる。<Object of the invention> This invention was made in view of the above problems,
The object of the present invention is to provide a solar cell that can maintain high conversion efficiency, reduce loss of incident light, and reduce material costs.
く問題点を解決するための手段〉
上記の目的を達成づるための、この発明の太陽電池は、
１枚のガラス基板の両面に太陽電池セルを形成し、各太
陽電池セルからそれぞれ出力を取出すものである。Means for Solving the Problems> In order to achieve the above object, the solar cell of the present invention has the following features:
Solar cells are formed on both sides of a single glass substrate, and output is extracted from each solar cell.
但し、照射太陽光の下流側に位置する太陽電池セルの、
下流側の出力取出し電極は、金属電極であってもよい。However, in the solar cell located downstream of the irradiated sunlight,
The output extraction electrode on the downstream side may be a metal electrode.
く作用〉
以上の構成の太陽電池であれば、１枚のガラス基板の両
面に形成した太陽電池セルの一方から太陽光を照射する
ことにより、先ず、一方の太陽電池セルにおいて光電変
換が行なわれ、次いでガラス基板を透過した光により他
方の太陽電池セルにおいて光電変換が行なわれ、両太陽
電池セルからの出力電流をおのおの別に取出すことかで
きる。In a solar cell with the above configuration, by irradiating sunlight from one side of the solar cells formed on both sides of a single glass substrate, photoelectric conversion is first performed in one of the solar cells. Then, photoelectric conversion is performed in the other solar cell by the light transmitted through the glass substrate, and output currents from both solar cells can be extracted separately.
イして、照射太陽光の下流側に位置する太陽電池セルの
、下流側の出力取出し電極が、金ＰＡ電極である場合に
おいても、上記と同様の光電変換動作、および出力電流
の取出しを行なわせることがが可能で、金属電極として
Ａ（＋、ＡＩ等の高反射率材料を用いることにより、光
を反射して有効に利用することができる。Even when the output extraction electrode on the downstream side of the solar cell located downstream of the irradiated sunlight is a gold PA electrode, the same photoelectric conversion operation and output current extraction as described above are performed. By using a high reflectance material such as A(+, AI, etc.) as the metal electrode, light can be reflected and used effectively.
〈実施例〉
以下、実施例を示づ添伺図面によってδＴ細に説明する
。<Example> Hereinafter, an example will be explained in detail with reference to accompanying drawings.
第１図はこの発明の太陽電池の一実施例を示す概略図で
あり、１枚のガラス基板（１）の両面に透明電極（２１
（２’）を形成し、各透明電極ｆ２１（２’）の所定イ
装置に、照射太陽光に関して上流側がｐ型半導体となる
ようにｐｉｎセル＋３１（３’）を形成し、さらに上記
ｐ ｉ ｎ Ｌ？ル（３）の上流側に透明電極（４）を
形成しているとともに、ｐ ｉ ｎセル（３′）の下流
側に金ｆｌ電惨（５）を形成している。FIG. 1 is a schematic diagram showing an embodiment of the solar cell of the present invention, in which transparent electrodes (21
(2') is formed, and a pin cell +31 (3') is formed in a predetermined device of each transparent electrode f21 (2') so that the upstream side with respect to irradiated sunlight becomes a p-type semiconductor, and furthermore, the above p i nL? A transparent electrode (4) is formed on the upstream side of the cell (3), and a gold fl electrode (5) is formed on the downstream side of the pin cell (3').
尚、上記ｐｉｎセル（３）としては、例えば、ａ−３ｒ
：Ｈからなるもの（Ｅｏ ＝１．８ｅＶ）が使用され、
ｐｉｎセル（３′）としては、例えばａ−３ｉＱａニド
１からな・るもの（Ｅｏ＝１．５ｅＶ）が使用されてい
る。In addition, as the above-mentioned pin cell (3), for example, a-3r
:H (Eo = 1.8eV) is used,
As the pin cell (3'), for example, one made of a-3iQa nide 1 (Eo=1.5 eV) is used.
上記の構成の太陽電池を使用して光電変換を行なわせた
場合の変換効率、出力電流値等は、第１表に承りように
、上記第２図の構成の太陽電池を上記実施例の場合と同
一の材料で構成した場合と比較して増加しており、ガラ
ス基板（１）を１枚のみとしたタノ果が明らかに現れて
いる。The conversion efficiency, output current value, etc. when photoelectric conversion is performed using the solar cell with the above configuration are as shown in Table 1. This increases compared to the case where the glass substrate (1) is made of the same material, and the effect of using only one glass substrate (1) clearly appears.
第１表
また、材料についても、ガラス基板（１）が１枚でよい
から、Ｉ料：１ストを低減することができる。Table 1 Also, regarding materials, since only one glass substrate (1) is required, the I material can be reduced by one stroke.
尚、この発明は上記の実施例に限定されるものではなく
、例、えば、上記金属電極（５）に代えて透明電極を使
用することが可能である他、ｐｉｎセル＋３１ （３’
）として上記材料以外の材料を使用づること、さらに他
の構造の太陽電池を利用すること（但し、上流側の材料
のＥ（＋を下流側の材料の１０以上になるように材料を
選定することが好ましい）が可能であり、その他この発
明の要旨を変更しない範囲内にｄ３いて、種々の設計変
更を施づことが可能である。It should be noted that the present invention is not limited to the above-mentioned embodiments. For example, it is possible to use a transparent electrode in place of the metal electrode (5), and a pin cell +31 (3'
), or use a solar cell with a different structure (however, materials should be selected so that E(+) of the upstream material is 10 or more than that of the downstream material. (preferably) is possible, and various other design changes can be made within the scope of not changing the gist of the present invention.
く発明の効果）
以１のようにこの５１明は、１枚のガラス基板の両側に
太陽電池セルを形成しているとともに、おのおの別に出
力電流を取出すようにしているので、ガラスの表面反０
４による入射光ロスを減少させて仝休としての光電変換
効率を高くすることができるととしに、材料コストを低
減することができるという時打の効果を奏する。(Effects of the invention) As described in 1 below, this 51 light has solar cells formed on both sides of a single glass substrate, and output current is taken out separately from each, so that the surface of the glass is
It is possible to reduce the loss of incident light due to 4 and increase the photoelectric conversion efficiency as a rest, and it also has the advantage of reducing material costs.
第１図はこの発明の太陽電池の一実施例を示ず概略図、
第２図は従来例を示す概略図。
（１）・・・ガラス基板、＋２１ （２’＞ ＋４１・
・・透明電極、ｆ３Ｈ３’）・・・ｐ ｉ ｒ１セル、
（５）・・・金属電橿第１図
手 続 補 正 書（自発）
昭和６１年１２月１７０
０工・［庁長官 黒田明雄殿 −１、事件の
表示
昭和６１年特許願第４９１２３号
２、発明の名称
太 陽 電 池
代表者 川 上 哲 部
４、代理人
之゛（う
６、補正の対象
明細書中、発明の詳細な説明の欄
７、補正の内容
すること」と訂正する。FIG. 1 is a schematic diagram showing an embodiment of the solar cell of the present invention, and FIG. 2 is a schematic diagram showing a conventional example. (1)...Glass substrate, +21 (2'> +41・
...transparent electrode, f3H3')...p i r1 cell,
(5) ...Metal Electric Rope Diagram 1 Procedural Amendment (Spontaneous) December 1986 1700 0 [Agency Commissioner Akio Kuroda -1, Incident Indication 1985 Patent Application No. 49123 2 , Name of the invention Solar cell Representative Tetsu Kawakami Department 4, Agent (6) In the specification subject to amendment, Column 7, Detailed explanation of the invention, Contents of the amendment shall be corrected.
Claims (1)
各太陽電池セルからそれぞれ出力を取出すことを特徴と
する太陽電池。 ２、照射太陽光の下流側に位置する太陽電池セルの、下
流側の出力取出し電極が、金属電極である上記特許請求
の範囲第１項記載の太陽電池。[Claims] 1. Forming solar cells on both sides of one glass substrate,
A solar cell characterized by extracting output from each solar cell. 2. The solar cell according to claim 1, wherein the output extraction electrode on the downstream side of the solar cell located downstream of the irradiated sunlight is a metal electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61049123A JPS62205672A (en) | 1986-03-06 | 1986-03-06 | Solar battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61049123A JPS62205672A (en) | 1986-03-06 | 1986-03-06 | Solar battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62205672A true JPS62205672A (en) | 1987-09-10 |
Family
ID=12822285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61049123A Pending JPS62205672A (en) | 1986-03-06 | 1986-03-06 | Solar battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62205672A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004084282A1 (en) * | 2003-03-14 | 2004-09-30 | Midwest Research Institute | Bifacial structure for tandem solar cell formed with amorphous semiconductor materials |
-
1986
- 1986-03-06 JP JP61049123A patent/JPS62205672A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004084282A1 (en) * | 2003-03-14 | 2004-09-30 | Midwest Research Institute | Bifacial structure for tandem solar cell formed with amorphous semiconductor materials |
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