JPH0888384A - Thin film solar battery - Google Patents

Thin film solar battery

Info

Publication number
JPH0888384A
JPH0888384A JP6224464A JP22446494A JPH0888384A JP H0888384 A JPH0888384 A JP H0888384A JP 6224464 A JP6224464 A JP 6224464A JP 22446494 A JP22446494 A JP 22446494A JP H0888384 A JPH0888384 A JP H0888384A
Authority
JP
Japan
Prior art keywords
film
adhesive
solar cell
nylon
electrode 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
JP6224464A
Other languages
Japanese (ja)
Inventor
Yujiro Watanuki
勇次郎 綿貫
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric 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 Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP6224464A priority Critical patent/JPH0888384A/en
Publication of JPH0888384A publication Critical patent/JPH0888384A/en
Pending legal-status Critical Current

Links

Classifications

    • 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

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  • Photovoltaic Devices (AREA)

Abstract

PURPOSE: To realize good humidity resistance and weather resistance preventing lowering of characteristic caused by invasion of water by forming adhesive of nylon-12. CONSTITUTION: A first electrode layer 2, a thin film semiconductor layer 3 and a transparent second electrode layer 4 are laminated on a film-like insulation substrate 1, and a third electrode layer 5 is formed in a rear side of the insulation substrate 1. They are fixed by waterproof films 71, 72 with adhesive layers 61, 62 therebetween. The adhesive is formed of nylon-12. The nylon-12 adhesive is thermoplastic resin, which is a hot-melt adhesive. Therefore, it does not generate problems such as yellowing in ethylene vinyl acetate copolymer used before and adhesion strength is also improved. Both humidity resistance and weather resistance of a thin film solar battery are improved.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、可とう性の絶縁性基板
を用いた薄膜太陽電池に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thin film solar cell using a flexible insulating substrate.

【0002】[0002]

【従来の技術】太陽電池はクリーンなエネルギーとして
注目されており、その技術の進歩はめざましいものがあ
る。特に、非晶質シリコンを主材料とした光電変換層は
大面積の成膜が容易で低価格であるため、それを用いた
薄膜太陽電池に対する期待は大きい。従来の太陽電池は
ガラス基板が用いられていたが、厚型で重く、割れやす
い欠点があり、また屋外の屋根等への適用化による作業
性の改良等の理由により、薄型・軽量化の要望が強くな
っている。これらの要望に対し、可とう性のあるプラス
チックフィルムおよび薄膜金属フィルムを基板に用いた
フレキシブルタイプの薄膜太陽電池の実用化が進みつつ
ある。このようなフレキシブルタイプ太陽電池を10〜
15年の長期にわたり使用するために、太陽電池セルの
表裏両側を接着層を介して防湿フィルムをラミネートし
て水分の侵入を防止している。図1はそのようなフレキ
シブルタイプ太陽電池の断面構造を示し、可とう性のあ
るプラスチックフィルム基板1の一面上に金属からなる
第一電極層2、pin接合を有する結晶質あるいは非晶
質の半導体層3、ITOなどからなる透明な第二電極層
4が積層され、他面側には、例えば特願平5−6797
6号明細書に記載されている第三電極層5が形成され、
基板1に明けられた図示しない貫通孔を通じて第一電極
層2あるいは第二電極層4と接続されている。このよう
な構造の太陽電池セルが、第二電極層の上に透明接着剤
層61を介した透明防湿フィルム71と第三電極層5の
上に接着剤層62を介した防湿フィルム72とにより挟
着されている。
2. Description of the Related Art Solar cells have been attracting attention as clean energy, and their technological progress has been remarkable. In particular, since a photoelectric conversion layer mainly made of amorphous silicon can be easily formed into a large area and is inexpensive, a thin-film solar cell using the photoelectric conversion layer is highly expected. Conventional solar cells use glass substrates, but they are thick and heavy, and have the drawback of being easily broken, and there is a demand for thinness and lightness for reasons such as improving workability by applying them to outdoor roofs. Is getting stronger. To meet these demands, a flexible type thin film solar cell using a flexible plastic film and a thin film metal film as a substrate is being put into practical use. Such flexible type solar cells
In order to use it for a long period of 15 years, a moisture-proof film is laminated on both front and back sides of the solar cell via adhesive layers to prevent moisture from entering. FIG. 1 shows a cross-sectional structure of such a flexible solar cell, in which a flexible plastic film substrate 1 is provided on one surface thereof with a first electrode layer 2 made of a metal, and a crystalline or amorphous semiconductor having a pin junction. The layer 3 and the transparent second electrode layer 4 made of ITO or the like are laminated, and on the other surface side, for example, Japanese Patent Application No. 5-6797.
The third electrode layer 5 described in No. 6 is formed,
It is connected to the first electrode layer 2 or the second electrode layer 4 through a through hole (not shown) formed in the substrate 1. The solar cell having such a structure includes a transparent moisture-proof film 71 having a transparent adhesive layer 61 on the second electrode layer and a moisture-proof film 72 having an adhesive layer 62 on the third electrode layer 5. It is sandwiched.

【0003】[0003]

【発明が解決しようとする課題】ところで、このような
従来の薄膜太陽電池では、紫外線、酸素による酸化ある
いは熱による劣化、また、屋外での雨水および空気中の
ガス状の水分の侵入によって、透明防湿フィルムおよび
接着剤層との剥離、接着強度の低下あるいは接着剤の変
色等が発生する問題があった。これらの問題は、防湿フ
ィルム71、72の全面およびラミネート端部の合わせ
面、とりわけ端部の合わせ面で多く、太陽電池の出力を
低下させる要因となっていた。そのため、このような薄
膜太陽電池は長期の屋外使用に対しては未だ充分でな
く、さらに改良が望まれていた。
By the way, in such a conventional thin film solar cell, it is transparent due to deterioration due to oxidation or heat due to ultraviolet rays, oxygen, and intrusion of rainwater and gaseous water in the air outdoors. There is a problem that peeling from the moisture-proof film and the adhesive layer, a decrease in adhesive strength, or discoloration of the adhesive occurs. These problems are large on the entire surfaces of the moisture-proof films 71 and 72 and the mating surfaces of the end portions of the laminate, especially the mating surfaces of the end portions, and have been a factor of reducing the output of the solar cell. Therefore, such a thin film solar cell is not yet sufficient for long-term outdoor use, and further improvement has been desired.

【0004】本発明の目的は、上記の問題を解決し、水
分の侵入により特性の低下のないような防湿性とともに
耐候性も優れた薄膜太陽電池を提供することにある。
An object of the present invention is to solve the above-mentioned problems and to provide a thin film solar cell which is excellent in weather resistance as well as moisture-proof so as not to deteriorate the characteristics due to invasion of water.

【0005】[0005]

【課題を解決するための手段】上記の目的を達成するた
めに、本発明は、可とう性基板上に少なくとも第一電極
層、光電変換半導体層、透明第二電極層が積層され、接
着剤層を介して防湿フィルムにより挟着された薄膜太陽
電池において、接着剤がナイロン−12よりなるものと
する。防湿フィルの内面側にポリアミド樹脂よりなる捕
水層を備えたことが良く、ポリアミド樹脂がナイロン−
6であることが有効である。接着剤層と捕水層が積層フ
ィルムの形で挿入され、加熱されたものであることも良
い。
In order to achieve the above-mentioned object, the present invention provides a flexible substrate having at least a first electrode layer, a photoelectric conversion semiconductor layer, and a transparent second electrode layer laminated on each other to form an adhesive agent. In the thin-film solar cell sandwiched by the moisture-proof film via the layers, the adhesive is made of nylon-12. It is preferable to have a water-trapping layer made of polyamide resin on the inner surface side of the moisture-proof fill.
A value of 6 is effective. The adhesive layer and the water capturing layer may be inserted and heated in the form of a laminated film.

【0006】[0006]

【作用】ナイロン−12接着剤は、熱可塑性樹脂であ
り、ホットメルト型として使用される材料であるため、
従来接着剤に用いられていたEVA (エチレン酢酸ビニ
ル共重合体) のような黄変の問題は発生せず、また接着
強度も向上する。防湿フィルムの内面側に、ナイロン−
12接着剤の接着性のよい、ナイロン−6などのポリア
ミド樹脂からなる捕水層を備えたことにより、屋外使用
時に雨水に曝されるおよび空気中にあるガス状の水分が
防湿フィルム表面およびラミネート端部の合わせ面を通
して侵入してくる水分を太陽電池セルに到達する前に捕
まえる貯水池の役割を果たして太陽電池本体への水分の
影響を防止することができる。
Function Nylon-12 adhesive is a thermoplastic resin and is a material used as a hot-melt type.
The problem of yellowing unlike EVA (ethylene vinyl acetate copolymer) which has been conventionally used for adhesives does not occur, and the adhesive strength is improved. On the inner surface of the moisture-proof film, nylon-
12 Adhesive having a good adhesive property and made of a polyamide resin such as nylon-6 is provided, so that when exposed to rainwater and in the air, gaseous moisture exposed to rainwater and the moisture-proof film surface and the laminate It can act as a reservoir that traps moisture that has entered through the mating surfaces of the ends before reaching the solar cells, and can prevent the influence of moisture on the solar cell main body.

【0007】[0007]

【実施例】以下、図面を引用して本発明の実施例につい
て述べる。本発明の一実施例の薄膜太陽電池の構造は図
1と同じであり、図1と共通の部分に同一の符号を付し
た図2は本発明の別の実施例の薄膜太陽電池の構造を示
す。
Embodiments of the present invention will be described below with reference to the drawings. The structure of the thin-film solar cell of one embodiment of the present invention is the same as that of FIG. 1, and FIG. 2 in which the same parts as those of FIG. 1 are denoted by the same reference numerals shows the structure of the thin-film solar cell of another embodiment of the present invention. Show.

【0008】フィルム状絶縁基板1は電極層および非晶
質半導体層が200℃前後で成膜されるため耐熱性が要
求される。したがって、耐熱性を有するプラスチックフ
ィルムとして、ポリイミド、ポリエーテルイミド、ポリ
サルホン、ポリエーテルサルホン、ポリフェニレンサル
ファイド、パラ系アラミド、ポリエーテルケトン、ある
いはふっ素系全般のフィルムが挙げられるが、特にポリ
イミド、パラ系アラミド、ふっ素系全般のフィルムが好
適である。しかし、薄膜型の金属フィルムとしてステン
レス鋼、ニッケル、銅等の箔を用い、表面に耐熱性絶縁
膜を被着してもよい。あるいは、第一電極層を兼ねる導
電性基板としてそのまま用いることもできる。薄膜半導
体層3は一般的に成膜されるpin接合を有する非晶質
シリコンを主体とした薄膜である。電極層2、4、5と
しては、それぞれ金属膜、透明導電膜、金属膜がスパッ
タ等の手段により形成される。
The film-like insulating substrate 1 is required to have heat resistance because the electrode layer and the amorphous semiconductor layer are formed at about 200 ° C. Therefore, as the heat-resistant plastic film, polyimide, polyetherimide, polysulfone, polyether sulfone, polyphenylene sulfide, para-based aramid, polyether ketone, or fluorine-based general film, but especially polyimide, para-based film. Aramid and fluorine-based films are suitable. However, a foil of stainless steel, nickel, copper or the like may be used as the thin film metal film, and a heat resistant insulating film may be applied to the surface. Alternatively, it can be used as it is as a conductive substrate which also serves as the first electrode layer. The thin film semiconductor layer 3 is a thin film mainly composed of amorphous silicon having a pin junction which is generally formed. As the electrode layers 2, 4, and 5, a metal film, a transparent conductive film, and a metal film are formed by a method such as sputtering.

【0009】光入射側の防湿フィルム71には、透明
で、かつ水分透過率の小さいプラスチックフィルムが用
いられ、ふっ素系全般、ポリメチルメタアクリレート、
ポリアリレート、ポリエチレンナフタレート、ポリサル
ホン、ポリエーテルサルホン、ポリ塩化ビニル、ポリカ
ーボネートあるいはポリフェニレンサルファイド等のフ
ィルムが挙げられる。また、光入射側と反対面の防湿フ
ィルム72は、必ずしも透明である必要はなく、たとえ
ば、上記フィルムの他にアルミニウム等の金属箔をプラ
スチックフィルムでサンドイッチしたもので、プラスチ
ックフィルム自体は若干水分透過率の大きいものでも、
プラスチックフィルムでサンドイッチされた金属箔よ
り、侵入してくる水分を遮断するものを用いることがで
きる。接着剤層61、62には、本発明により、熱可塑
性樹脂であるナイロン−12を主原料としてフィルム化
したものを挿入し、ホットメルト型接着剤として用い
る。
As the moisture-proof film 71 on the light-incident side, a transparent plastic film having a low moisture permeability is used. Fluorine series, polymethylmethacrylate,
Examples thereof include films of polyarylate, polyethylene naphthalate, polysulfone, polyether sulfone, polyvinyl chloride, polycarbonate, polyphenylene sulfide, and the like. Further, the moisture-proof film 72 on the side opposite to the light incident side does not necessarily have to be transparent. For example, in addition to the above film, a metal foil of aluminum or the like is sandwiched with a plastic film. Even if the rate is high,
It is possible to use a metal foil sandwiched between plastic films, which shields moisture from entering. According to the present invention, the adhesive layers 61 and 62 are formed by filming a thermoplastic resin, nylon-12, as a main raw material and used as a hot melt adhesive.

【0010】実施例1:この実施例は請求項1に記載の
本発明の一実施例である。フィルム基板1として、ポリ
イミドフィルム (東レデュポン社製、商品名:カプト
ン) を用い、第一電極層2はAg膜、薄膜半導体層3と
してnip接合を有する非晶質シリコン膜、第二電極層
4はITO膜、絶縁性基板1の裏側に第三電極層5とし
てAg膜をそれぞれ所定の装置により形成し、太陽電池
セルとした。そして、接着剤層61、62の接着剤のた
めに50μmの厚さのナイロン−12(ダイセル化学社
製、商品名:ダイアミド) のフィルムを用い、その外側
に厚さ150μmの3ふっ化塩化エチレン (PCTF
E、ダイキン社製、商品名:ダイフロン) のフィルムを
防湿フィルム71、72としてセットし、130℃の温
度で15分間の真空加熱圧着条件でラミネートして薄膜
太陽電池を作製した。
Embodiment 1: This embodiment is an embodiment of the present invention described in claim 1. A polyimide film (trade name: Kapton manufactured by Toray DuPont) is used as the film substrate 1, an Ag film is used as the first electrode layer 2, an amorphous silicon film having a nip junction is used as the thin film semiconductor layer 3, and a second electrode layer 4 is used. Is an ITO film, and an Ag film is formed as a third electrode layer 5 on the back side of the insulating substrate 1 by a predetermined device to form a solar cell. A 50 μm thick nylon-12 (manufactured by Daicel Chemical Industries, trade name: Daiamide) film is used for the adhesive layers 61 and 62, and a 150 μm thick trifluoroethylene chloride film is used on the outside thereof. (PCTF
Films of E, manufactured by Daikin Co., Ltd., trade name: Daiflon) were set as the moisture-proof films 71 and 72, and laminated at a temperature of 130 ° C. under vacuum heating and pressure bonding conditions for 15 minutes to prepare a thin film solar cell.

【0011】実施例2:実施例1の太陽電池セル裏側の
防湿フィルム72を、アルミニウム箔をポリふっ化ビニ
ル (PVF) でサンドイッチした白色フィルム (デュポ
ン社、商品名:テドラ−PVF) の厚さ120μmの防
湿フィルムに変更した以外は実施例1と同様にして薄膜
太陽電池を作製した。
Example 2: Thickness of a white film (DuPont, trade name: Tedra-PVF) obtained by sandwiching the moisture-proof film 72 on the back side of the solar cell of Example 1 with aluminum foil sandwiched with polyvinyl fluoride (PVF). A thin-film solar cell was produced in the same manner as in Example 1 except that the moisture-proof film having a thickness of 120 μm was used.

【0012】実施例3:この実施例は請求項2に記載の
本発明の一実施例で、図2に示した構造をもつ。図に示
すようにナイロン−12よりなる接着剤層61,62
と、厚さ70μmのポリアリレートフィルム (ユニチカ
社製、商品名:エンブレート) を用いた防湿フィルム7
1、72との間に100μmの厚さのナイロン−6 (東
レ合成社製、商品番号:#l000) を捕水層81、8
2として挿入した以外は実施例1と同様にして薄膜太陽
電池を作製した。
Embodiment 3 This embodiment is an embodiment of the present invention as set forth in claim 2, and has the structure shown in FIG. As shown in the figure, adhesive layers 61, 62 made of nylon-12
And a moisture-proof film 7 using a 70 μm thick polyarylate film (manufactured by Unitika Ltd., trade name: Emblate)
Nylon-6 (manufactured by Toray Gosei Co., Ltd., product number: # 1000) having a thickness of 100 [mu] m between the water collecting layers 81 and
A thin-film solar cell was produced in the same manner as in Example 1 except that the thin-film solar cell was inserted as 2.

【0013】実施例4:太陽電池セル裏側の防湿フィル
ム72に実施例2を同様の厚さ120μmの白色テドラ
フィルムを用い、捕水層82を除いた以外は実施例3と
同様の構造である。 実施例5:この実施例では、ナイロン−12フィルムの
片面にナイロン−6樹脂層を被覆し、再押し出しする共
押し出し法により形成したナイロン−12とナイロン−
6の積層フィルム (ダイセル化学社、商品名ダイアミ
ド) を透明第二電極層4と防湿フィルム71との間、お
よび第三電極層5と防湿フィルム72との間に挿入して
工程の短縮を図り、図2と同様の構造の薄膜太陽電池を
作製した。なお、防湿フィルム71、72には、厚さ5
0μmの透明PVFフィルムを用いた。
Example 4 A structure similar to that of Example 3 except that a white tedra film having the same thickness of 120 μm as in Example 2 was used as the moisture-proof film 72 on the back side of the solar cell and the water trapping layer 82 was removed. is there. Example 5: In this example, nylon-12 and nylon-formed by a coextrusion method in which one side of a nylon-12 film was coated with a nylon-6 resin layer and reextruded.
The laminated film of No. 6 (Daicel Chemical Co., Ltd., trade name: Daiamide) is inserted between the transparent second electrode layer 4 and the moisture-proof film 71 and between the third electrode layer 5 and the moisture-proof film 72 to shorten the process. A thin film solar cell having a structure similar to that shown in FIG. 2 was produced. The moisture-proof films 71 and 72 have a thickness of 5
A 0 μm transparent PVF film was used.

【0014】実施例6:太陽電池セル裏側の防湿フィル
ムに実施例2、4と同様の厚さ120μmの白色テドラ
フィルムを用い、それと第三電極層5との間には、積層
フィルムを挿入しないでナイロン−12よりなる接着剤
62のフィルムのみを挿入した以外は、実施例5と同様
にして薄膜太陽電池を作製した。
Example 6 A white tedra film having a thickness of 120 μm similar to that in Examples 2 and 4 was used as the moisture-proof film on the back side of the solar cell, and a laminated film was inserted between it and the third electrode layer 5. A thin film solar cell was produced in the same manner as in Example 5 except that only the film of the adhesive 62 made of nylon-12 was inserted.

【0015】以上の実施例のうち、捕水層81、82を
設けたものはナイロン−6を用いているが、ナイロン−
66、ナイロン−6−66−610共重合体など、ポリ
アミド樹脂を用いることもできる。 比較例1:防湿フィルム71、72には実施例1と同様
のPCTFEフィルムを用いたが、厚さ400μmのE
VA (エチレン酢酸ビニル共重合体) 層に変更し、捕水
層を挿入しない薄膜太陽電池である。
Of the above examples, nylon-6 is used in the one provided with the water-trapping layers 81 and 82.
Polyamide resin such as 66, nylon-6-66-610 copolymer can also be used. Comparative Example 1: The same PCTFE film as in Example 1 was used as the moisture-proof films 71 and 72, but E having a thickness of 400 μm was used.
It is a thin-film solar cell in which a VA (ethylene vinyl acetate copolymer) layer is changed and a water trapping layer is not inserted.

【0016】比較例2:防湿フィルム71、72に実施
例3と同様のポリアリレートフィルムを用いた以外は、
比較例1と同様の薄膜太陽電池である。 比較例3:接着剤層61、62に変成ポリオレフィン系
接着剤を用い、防湿フィルム71、72に実施例5と同
様の透明PVFフィルムを用いた以外は、比較例1と同
様の薄膜太陽電池である。
Comparative Example 2: The same polyarylate film as in Example 3 was used as the moisture-proof films 71 and 72, except that
It is the same thin-film solar cell as in Comparative Example 1. Comparative Example 3: A thin-film solar cell similar to Comparative Example 1 except that a modified polyolefin-based adhesive was used for the adhesive layers 61 and 62 and a transparent PVF film similar to that of Example 5 was used for the moisture-proof films 71 and 72. is there.

【0017】上記実施例1〜6、比較例1〜3とも太陽
電池の電極より外部へリード線を引き出し、特性評価で
きる構造となっている。以上の実施例1〜6および比較
例1〜3の薄膜太陽電池を、屋外暴露の加速試験として
1000時間のウェザーメータによる試験 (屋外暴露約
5年相当) 行った結果、実施例1〜6においては外観上
変化は見られず、比較例1〜3では表面が若干黄色に変
色し、かつラミネート端部の合わせ面より中央に向かっ
て若干黒っぽくなっていた。また、太陽電池の出力特性
として変換効率を測定した結果、実施例1〜6では初期
値と同一値を示したが、比較例1〜3は約1.3%低下し
ていた。
In each of Examples 1 to 6 and Comparative Examples 1 to 3, lead wires are drawn out from the electrodes of the solar cell to the outside so that characteristics can be evaluated. The thin-film solar cells of Examples 1 to 6 and Comparative Examples 1 to 3 were tested by a weather meter for 1000 hours as an outdoor exposure acceleration test (outdoor exposure of about 5 years). No change in appearance was observed, and in Comparative Examples 1 to 3, the surface was slightly yellowed and slightly darker toward the center from the mating surface of the end portions of the laminate. Further, as a result of measuring the conversion efficiency as the output characteristic of the solar cell, Examples 1 to 6 showed the same value as the initial value, but Comparative Examples 1 to 3 showed a decrease of about 1.3%.

【0018】以上説明したように、本発明の実施例の薄
膜太陽電池は、外観上および特性上、比較例に比べ防湿
性、耐候性が優れていることが分かる。なお、以上の実
施例では基板表面に第三電極層を形成した薄膜太陽電池
に実施しているが、基板一面上にのみ構成される薄膜太
陽電池:即ち第三電極層を有しない薄膜太陽電池に適用
しても有効であることは明白である。
As described above, the thin film solar cells of the examples of the present invention are superior in moisture resistance and weather resistance to the comparative examples in terms of appearance and characteristics. In the above examples, the thin film solar cell in which the third electrode layer is formed on the surface of the substrate is used. However, the thin film solar cell configured only on the one surface of the substrate: that is, the thin film solar cell without the third electrode layer. It is clear that it is effective when applied to.

【0019】[0019]

【発明の効果】本発明によれば、両面に樹脂フィルムを
ラミネートする際に用いる接着剤にホットメルト型のナ
イロン−12を使用すること、さらには、ナイロン−1
2接着剤と組み合わせてナイロン−6などのポリアミド
樹脂よりなる捕水層を挿入することにより、耐湿性ばか
りでなく耐候性も向上し、黄変などの外観上の問題もな
い長寿命の薄膜太陽電池を得ることができた。
According to the present invention, the hot-melt type nylon-12 is used as the adhesive used for laminating the resin films on both sides, and further, the nylon-1 is used.
2 By inserting a water-trapping layer made of polyamide resin such as nylon-6 in combination with an adhesive, not only moisture resistance but also weather resistance is improved, and long-life thin film solar with no external problems such as yellowing. I got a battery.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の実施される薄膜太陽電池の構造を示す
断面図
FIG. 1 is a sectional view showing the structure of a thin film solar cell in which the present invention is implemented.

【図2】本発明の別の実施例の薄膜太陽電池の構造を示
す断面図
FIG. 2 is a sectional view showing the structure of a thin film solar cell according to another embodiment of the present invention.

【符号の説明】[Explanation of symbols]

1 フィルム状絶縁基板 2 第一電極層 3 薄膜半導体層 4 透明第二電極層 5 第三電極層 61 透明接着剤層 62 接着剤層 71 透明防湿フィルム 72 防湿フィルム 81、82 捕水層 1 film-like insulating substrate 2 first electrode layer 3 thin film semiconductor layer 4 transparent second electrode layer 5 third electrode layer 61 transparent adhesive layer 62 adhesive layer 71 transparent moisture-proof film 72 moisture-proof film 81, 82 water trapping layer

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】可とう性基板上に少なくとも第一電極層、
光電変換半導体層、透明第二電極層が積層され、接着剤
層を介して表面の防湿フィルムにより挟着されたものに
おいて、接着剤がナイロン−12よりなることを特徴と
する薄膜太陽電池。
1. At least a first electrode layer on a flexible substrate,
A thin film solar cell in which a photoelectric conversion semiconductor layer and a transparent second electrode layer are laminated and sandwiched by a moisture-proof film on the surface via an adhesive layer, wherein the adhesive is made of nylon-12.
【請求項2】防湿フィルムの内面側にポリアミド樹脂よ
りなる捕水層を備えた請求項1記載の薄膜太陽電池。
2. The thin-film solar cell according to claim 1, further comprising a water-trapping layer made of a polyamide resin on the inner surface side of the moisture-proof film.
【請求項3】ポリアミド樹脂がナイロン−6である請求
項2記載の薄膜太陽電池。
3. The thin film solar cell according to claim 2, wherein the polyamide resin is nylon-6.
【請求項4】接着剤層と捕水層が積層フィルムの形で挿
入され、加熱されたものである請求項2あるいは3記載
の薄膜太陽電池。
4. The thin film solar cell according to claim 2 or 3, wherein the adhesive layer and the water trapping layer are inserted in the form of a laminated film and heated.
JP6224464A 1994-09-20 1994-09-20 Thin film solar battery Pending JPH0888384A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6224464A JPH0888384A (en) 1994-09-20 1994-09-20 Thin film solar battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6224464A JPH0888384A (en) 1994-09-20 1994-09-20 Thin film solar battery

Publications (1)

Publication Number Publication Date
JPH0888384A true JPH0888384A (en) 1996-04-02

Family

ID=16814202

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6224464A Pending JPH0888384A (en) 1994-09-20 1994-09-20 Thin film solar battery

Country Status (1)

Country Link
JP (1) JPH0888384A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010527142A (en) * 2007-05-10 2010-08-05 イソボルタ・アクチエンゲゼルシヤフト Use of polymer composites in the production of photovoltaic modules.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010527142A (en) * 2007-05-10 2010-08-05 イソボルタ・アクチエンゲゼルシヤフト Use of polymer composites in the production of photovoltaic modules.
JP2010528454A (en) * 2007-05-10 2010-08-19 イソボルタ・アクチエンゲゼルシヤフト Use of polyamides as encapsulating materials for photovoltaic modules

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