JP2005191167A - 集積型薄膜太陽電池及びその製造方法 - Google Patents
集積型薄膜太陽電池及びその製造方法 Download PDFInfo
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- 239000010409 thin film Substances 0.000 title claims abstract description 125
- 238000004519 manufacturing process Methods 0.000 title claims description 36
- 238000000059 patterning Methods 0.000 claims abstract description 101
- 229910052751 metal Inorganic materials 0.000 claims abstract description 73
- 239000002184 metal Substances 0.000 claims abstract description 73
- 239000004065 semiconductor Substances 0.000 claims abstract description 36
- 239000010408 film Substances 0.000 claims abstract description 24
- 239000000758 substrate Substances 0.000 claims abstract description 23
- 150000001875 compounds Chemical class 0.000 claims abstract description 21
- 239000007787 solid Substances 0.000 claims abstract description 12
- 239000000314 lubricant Substances 0.000 claims abstract description 11
- 230000031700 light absorption Effects 0.000 claims description 52
- 238000000034 method Methods 0.000 claims description 34
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical group [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 9
- 229910052750 molybdenum Inorganic materials 0.000 claims description 9
- 239000011733 molybdenum Substances 0.000 claims description 9
- MHWZQNGIEIYAQJ-UHFFFAOYSA-N molybdenum diselenide Chemical group [Se]=[Mo]=[Se] MHWZQNGIEIYAQJ-UHFFFAOYSA-N 0.000 claims description 8
- 229910044991 metal oxide Inorganic materials 0.000 claims description 7
- 150000004706 metal oxides Chemical class 0.000 claims description 7
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims description 6
- 239000000470 constituent Substances 0.000 claims description 5
- 239000013078 crystal Substances 0.000 claims description 5
- 238000006748 scratching Methods 0.000 claims description 2
- 230000002393 scratching effect Effects 0.000 claims description 2
- 150000002739 metals Chemical group 0.000 claims 1
- 229910052798 chalcogen Inorganic materials 0.000 abstract description 2
- 150000001787 chalcogens Chemical class 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 155
- KTSFMFGEAAANTF-UHFFFAOYSA-N [Cu].[Se].[Se].[In] Chemical compound [Cu].[Se].[Se].[In] KTSFMFGEAAANTF-UHFFFAOYSA-N 0.000 description 7
- 238000005520 cutting process Methods 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000011521 glass Substances 0.000 description 5
- DVRDHUBQLOKMHZ-UHFFFAOYSA-N chalcopyrite Chemical compound [S-2].[S-2].[Fe+2].[Cu+2] DVRDHUBQLOKMHZ-UHFFFAOYSA-N 0.000 description 4
- 229910052951 chalcopyrite Inorganic materials 0.000 description 4
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 229910052733 gallium Inorganic materials 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000010549 co-Evaporation Methods 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910005540 GaP Inorganic materials 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000003917 TEM image Methods 0.000 description 1
- RHGKNFZWWVSNTC-UHFFFAOYSA-N [Cu].[In].[In] Chemical compound [Cu].[In].[In] RHGKNFZWWVSNTC-UHFFFAOYSA-N 0.000 description 1
- ZQRRBZZVXPVWRB-UHFFFAOYSA-N [S].[Se] Chemical compound [S].[Se] ZQRRBZZVXPVWRB-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- -1 compound compound Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- HVMJUDPAXRRVQO-UHFFFAOYSA-N copper indium Chemical compound [Cu].[In] HVMJUDPAXRRVQO-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- HZXMRANICFIONG-UHFFFAOYSA-N gallium phosphide Chemical compound [Ga]#P HZXMRANICFIONG-UHFFFAOYSA-N 0.000 description 1
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 239000011669 selenium Substances 0.000 description 1
- 150000003346 selenoethers Chemical class 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
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Abstract
【解決手段】 基板2、裏面電極層3、多元化合物半導体薄膜(光吸収層)5、透明で高抵抗のバッファ層6、透明で導電性の窓層7の順序で積層した薄膜を個々の単セルに分割し、これを複数直列接続して所定電圧を得るもので、裏面電極層3を分割するパターニングP1と、光吸収層5又はこれとバッファ層6を分割するパターニングP2と、窓層7乃至光吸収層5を分割するパターニングP3とからなり、前記P2及びP3は、各構成薄膜層を金属針で機械的に除去して溝を形成する際、光吸収層形成工程で裏面電極層3の表面に副次的にカルコゲン元素との反応で生成した極薄膜層4を固体潤滑剤として用いる。
【選択図】 図1
Description
前記前記金属裏面電極層の一部を細線状に除去することによりパターニング(パターンを形成)する第1のパターニング工程と、
前記第1のパターニング工程で形成されるパターンを基準位置として一定間隔オフセットして前記光吸収層の一部又は前記光吸収層とバッファ層の一部を細線状に除去することによりパターニング(パターンを形成)する第2のパターニング工程と、
前記第1のパターニング工程又は第2のパターニング工程で形成されるパターンを基準位置として一定間隔オフセットして前記光吸収層とバッファ層と窓層の一部を細線状に除去することによりパターニング(パターンを形成)する第3のパターニング工程とからなり、
前記第2のパターニング工程及び第3のパターニング工程は、先端が尖った金属針により、対象とする積層薄膜層の一部を機械的に引っ掻くようにして除去するメカニカル・スクライビング法により実施し、前記光吸収層形成過程で、副次的に金属裏面電極層の表面に生成する極薄膜層を固体潤滑剤として用い、金属針の先端を滑らせて、前記光吸収層までの各層を機械的に引っ掻くようにして除去するものであり、
前記第1のパターニング工程、第2のパターニング工程、第3のパターニング工程の順に順次パターニングを行うことにより、対象となる薄膜太陽電池の各構成薄膜層を機械的に除去して、溝又は間隙を形成して、薄膜太陽電池を短冊状の単位セルに分割し切り分け、前記分割された単位セルが所定数直列接続した構造の集積型の薄膜太陽電池を得る集積型薄膜太陽電池の製造方法である。
本発明の集積型薄膜太陽電池の製造方法は、図1に示すように、基板上に複数の薄膜太陽電池セルが所定数直列接続された積層構造の薄膜太陽電池を一連の薄膜太陽電池製造プロセスの中に、薄膜太陽電池セルの分割及びこれらの接続のための以下の3つのパターニング(パターン形成工程)P1、P2及びP3を組み込むことにより、より変換効率の高い太陽電池の製造方法を達成することができる。
2 基板
3 金属裏面電極
4 極薄膜層(固体潤滑剤層)
5 光吸収層(p形多元化合物半導体薄膜)
6 バッファ層(混晶化合物半導体薄膜)
7 窓層(n形透明導電膜)
Claims (6)
- 基板と、前記基板上の金属裏面電極層と、前記金属裏面電極層上のp形の導電形を有し且つ光吸収層として供される多元化合物半導体薄膜(以下、光吸収層という。)と、前記多元化合物半導体薄膜上の多元化合物半導体薄膜と反対の導電形を有し、禁制帯幅が広く且つ透明で導電性を有し窓層として供される金属酸化物半導体薄膜(以下、窓層という。)と、前記光吸収層と窓層との間の界面の混晶化合物半導体薄膜からなるバッファ層とを構成薄膜とする薄膜太陽電池であって、前記金属裏面電極層上に前記光吸収層を形成する際に、金属裏面電極層と光吸収層との境界に副次的に形成される極薄膜層をパターニング工程で固体潤滑剤として利用し、薄膜太陽電池単位セルに分割し、且つこれら薄膜太陽電池単位セルをパターニングにより複数個接続した構造とすることを特徴とする集積型薄膜太陽電池。
- 前記金属裏面電極層がモリブデンの場合は、前記極薄膜層がセレン化モリブデン又は硫化モリブデンであることを特徴とする請求項1に記載の集積型薄膜太陽電池。
- 基板と、前記基板上の金属裏面電極層と、前記金属裏面電極層上のp形の導電形を有し且つ光吸収層として供される多元化合物半導体薄膜と、前記光吸収層上の光吸収層と反対の導電形を有し、禁制帯幅が広く且つ透明で導電性を有し窓層として供される金属酸化物半導体薄膜と、前記光吸収層と窓層との間の界面の混晶化合物半導体薄膜からなるバッファ層と、を構成薄膜とする集積型薄膜太陽電池の製造方法であって、
前記前記金属裏面電極層の一部を細線状に除去することによりパターニング(パターンを形成)する第1のパターニング工程と、
前記第1のパターニング工程で形成されるパターンを基準位置として一定間隔オフセットして前記光吸収層の一部又は前記光吸収層とバッファ層の一部を細線状に除去することによりパターニング(パターンを形成)する第2のパターニング工程と、
前記第1のパターニング工程又は第2のパターニング工程で形成されるパターンを基準位置として一定間隔オフセットして前記光吸収層とバッファ層と窓層の一部を細線状に除去することによりパターニング(パターンを形成)する第3のパターニング工程とからなり、
前記第2のパターニング工程及び第3のパターニング工程は、先端が尖った金属針により、対象とする積層薄膜層の一部を機械的に引っ掻くようにして除去するメカニカル・スクライビング法により実施し、前記光吸収層形成過程で、副次的に金属裏面電極層の表面に生成する極薄膜層を固体潤滑剤として用い、金属針の先端を滑らせて、前記光吸収層までの各層を機械的に引っ掻くようにして除去するものであり、
前記第1のパターニング工程、第2のパターニング工程、第3のパターニング工程の順に順次パターニングを行うことにより、対象となる薄膜太陽電池の各構成薄膜層を機械的に除去して、溝又は間隙を形成して、薄膜太陽電池を短冊状の単位セルに分割し切り分け、前記分割された単位セルが所定数直列接続した構造の集積型の薄膜太陽電池を得ることを特徴とする集積型薄膜太陽電池の製造方法。 - 前記第1のパターニング工程は、前記金属裏面電極層がMo等の金属の場合には、レーザ法により実施することを特徴とする請求項3に記載の集積型薄膜太陽電池の製造方法。
- 前記金属裏面電極層の表面に副次的に生成する極薄膜層が、金属裏面電極層がモリブデンの場合は、セレン化モリブデン又は硫化モリブデンであることを特徴とする請求項3に記載の集積型薄膜太陽電池の製造方法。
- 前記第2のパターニング工程及び第3のパターニング工程において形成する溝又は間隙が、30〜50μm幅で1m以上の長さで、直線性良く、近接した位置関係で複数本形成することを特徴とする請求項3に記載の薄膜太陽電池の製造方法。
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- 2004-12-22 CN CNA2004800409342A patent/CN1918711A/zh active Pending
- 2004-12-22 EP EP04808044.4A patent/EP1710844A4/en not_active Withdrawn
- 2004-12-22 WO PCT/JP2004/019693 patent/WO2005064693A1/ja active Application Filing
- 2004-12-22 KR KR1020067015030A patent/KR20070004593A/ko not_active Application Discontinuation
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Also Published As
Publication number | Publication date |
---|---|
JP4064340B2 (ja) | 2008-03-19 |
WO2005064693A1 (ja) | 2005-07-14 |
CN1918711A (zh) | 2007-02-21 |
EP1710844A4 (en) | 2015-12-16 |
EP1710844A1 (en) | 2006-10-11 |
KR20070004593A (ko) | 2007-01-09 |
US20070163646A1 (en) | 2007-07-19 |
US20090283131A1 (en) | 2009-11-19 |
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