JP4131965B2 - Cis系薄膜太陽電池の光吸収層の作製方法 - Google Patents
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Description
前記作製方法は、ガラス基板上の金属裏面電極層にCu/Ga、Cu/In、Cu−Ga/Inの何れか1つからなる層を形成した積層構造の平板状の金属プリカーサ膜(セレン化、硫化又はセレン化・硫化の対象物であり、以下、対象物という。)を装置内に配置し、セレン化してセレン化物系CIS系光吸収層を製膜するセレン化工程、前記対象物を硫化して硫化物系CIS系光吸収層を製膜する硫化工程、前記対象物をセレン化・硫化して硫黄・セレン化物系CIS系光吸収層を製膜するセレン化・硫化工程の何れか1つを有し、前記各工程において、装置内に雰囲気均一手段を設けると共に、反応ガスの対流が円滑となる前記対象物の配置方法により、装置内の温度を均一にし、且つ反応ガス及びカルコゲン元素(セレン、硫黄)との接触性を向上させるもので、
前記装置は、円筒形で、その中心軸が水平となるように設置し、
前記雰囲気均一手段は雰囲気ガスを強制的に対流させる前記円筒形の装置の左右の円形の内壁の略中心部に設けた電動ファンからなり、
前記対象物の配置方法は、脚部を有するホルダーを用いて、複数の平板状の対象物群を一定の間隙を設けて、円筒形の装置の中心軸方向に平行に且つその板面を垂直に対象物群を配置し、前記対象物群内部の上下方向及び前記長軸方向の反応ガス流路並びに対象物群外周囲の上部、下部及び両側部の前記ガス流路を形成する、
CIS系薄膜太陽電池の光吸収層の作製方法である。
なお、前記変換効率の測定は、JIS C 8914に準拠し、定常光ソーラシミュレーターで標準条件で測定(照射強度:100mW/cm2 、AM(エアマス):1.5、温度25℃)した。
1A 石英チャンバー
1B ヒーター
2 製膜対象物
2A Cu/Ga積層膜
2B Cu/In積層膜
2C Cu−Ga/In積層膜
3 ファン
4 ホルダー
4A ホルダー脚部
5 CIS系薄膜太陽電池
5A ガラス基板
5B 金属裏面電極層
5C CIS系光吸収層
5D 高抵抗バッファ層
5E 窓層(透明導電膜)
Claims (8)
- ガラス基板、金属裏面電極層、p形CIS系光吸収層、高抵抗バッファ層、n形窓層の順に積層されたサブストレート構造のpnヘテロ接合デバイスであるCIS系薄膜太陽電池の前記光吸収層の作製方法であって、
前記作製方法は、ガラス基板上の金属裏面電極層にCu/Ga、Cu/In、Cu−Ga/Inの何れか1つからなる層を形成した積層構造の平板状の金属プリカーサ膜(セレン化、硫化又はセレン化・硫化の対象物であり、以下、対象物という。)を装置内に配置し、セレン化してセレン化物系CIS系光吸収層を製膜するセレン化工程、前記対象物を硫化して硫化物系CIS系光吸収層を製膜する硫化工程、前記対象物をセレン化・硫化して硫黄・セレン化物系CIS系光吸収層を製膜するセレン化・硫化工程の何れか1つを有し、前記各工程において、装置内に雰囲気均一手段を設けると共に、反応ガスの対流が円滑となる前記対象物の配置方法により、装置内の温度を均一にし、且つ反応ガス及びカルコゲン元素(セレン、硫黄)との接触性を向上させるもので、
前記装置は、円筒形で、その中心軸が水平となるように設置し、
前記雰囲気均一手段は雰囲気ガスを強制的に対流させる前記円筒形の装置の左右の円形の内壁の略中心部に設けた電動ファンからなり、
前記対象物の配置方法は、脚部を有するホルダーを用いて、複数の平板状の対象物群を一定の間隙を設けて、円筒形の装置の中心軸方向に平行に且つその板面を垂直に対象物群を配置し、前記対象物群内部の上下方向及び前記長軸方向の反応ガス流路並びに対象物群外周囲の上部、下部及び両側部の前記ガス流路を形成する、
ことを特徴とするCIS系薄膜太陽電池の光吸収層の作製方法。 - 前記セレン化工程は、前記対象物を前記装置内に設置し、前記装置内にセレン源を導入し、封じ込んだ状態で昇温し、装置内を前記請求項1に記載の前記雰囲気均一手段及び対象物の配置方法により、前記対象物のセレン化反応を均一にし、金属プリカーサ膜を一定温度で、一定時間保持することによりセレン化物系CIS系光吸収層を製膜することを特徴とする請求項1に記載のCIS系薄膜太陽電池の光吸収層の作製方法。
- 前記セレン化工程は、前記対象物を装置内に設置し、装置内部を窒素ガス等の不活性ガスで置換した後、常温で濃度範囲1〜20%、望ましくは2〜10%の希釈したセレン化水素ガス等のセレン源を導入し、封じ込んだ状態で、前記請求項1又は2に記載の前記雰囲気均一手段及び対象物の配置方法により、ガス比重差により上下に分離する傾向のある装置内のガス雰囲気を均一にし、毎分10〜100℃で、400〜550℃迄、望ましくは、450〜500℃迄、昇温し、前記温度到達後、その到達温度に一定時間、即ち、10〜200分間、望ましくは、30〜120分間、保持することによりセレン化物系CIS系光吸収層を製膜することを特徴とする請求項1又は2に記載のCIS系薄膜太陽電池の光吸収層の作製方法。
- 前記硫化工程は、前記対象物を装置内に設置し、装置内部を窒素ガス等の不活性ガスで置換した後、常温で濃度範囲1〜30%、望ましくは2〜20%の希釈した硫化ガス等の硫黄源を導入し、封じ込んだ状態で、前記請求項1に記載の前記雰囲気均一手段及び対象物の配置方法により、ガス比重差により上下に分離する傾向のある装置内のガス雰囲気を均一にし、毎分10〜100℃で、400〜550℃迄、望ましくは、450〜550℃迄、昇温し、前記温度到達後、その到達温度に一定時間、即ち、10〜200分間、望ましくは、30〜120分間、保持することにより硫化物系CIS系光吸収層を製膜することを特徴とする請求項1に記載のCIS系薄膜太陽電池の光吸収層の作製方法。
- 前記セレン化・硫化工程は、請求項1、2又は3に記載の前記セレン化物系CIS系光吸収層を製膜後、封じ込んだセレン雰囲気の装置内を硫黄雰囲気に入替えた状態で、装置内温度を昇温しながら、前記請求項1に記載の前記雰囲気均一手段及び対象物の配置方法により、装置内の硫化反応を均一にし、前記セレン化物系CIS系光吸収層を一定温度で一定時間保持することで、硫黄と反応させることにより硫黄・セレン化物系CIS系光吸収層を製膜することを特徴とする請求項1、2又は3に記載のCIS系薄膜太陽電池の光吸収層の作製方法。
- 前記セレン化物系CIS系光吸収層は、CuInSe2 、Cu(InGa)Se2 又はCuGaSe2 からなることを特徴とする請求項1、2、3又は5に記載のCIS系薄膜太陽電池の光吸収層の作製方法。
- 前記硫化物系CIS系光吸収層は、CuInS2 、Cu(InGa)S2 、CuGaS2 からなることを特徴とする請求項1又は4に記載のCIS系薄膜太陽電池の光吸収層の作製方法。
- 前記硫黄・セレン化物系CIS系光吸収層は、CuIn(SSe)2 、Cu(InGa)(SSe)2 、CuGa(SSe)2 、CuIn(SSe)2 を表面層として持つCuInSe2 、CuIn(SSe)2 を表面層として持つCu(InGa)Se2 、CuIn(SSe)2 を表面層として持つCu(InGa)(SSe)2 、CuIn(SSe)2 を表面層として持つCuGaSe2 、CuIn(SSe)2 を表面層として持つCuGaSe2 、Cu(InGa)(SSe)2 を表面層として持つCu(InGa)Se2 、Cu(InGa)(SSe)2 を表面層として持つCuGaSe2 、CuGa(SSe)2 を表面層として持つCu(InGa)Se2 又はCuGa(SSe)2 を表面層として持つCuGaSe2 からなることを特徴とする請求項1又は5に記載のCIS系薄膜太陽電池の光吸収層の作製方法。
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004378398A JP4131965B2 (ja) | 2004-12-28 | 2004-12-28 | Cis系薄膜太陽電池の光吸収層の作製方法 |
| PCT/JP2005/023791 WO2006070745A1 (ja) | 2004-12-28 | 2005-12-26 | Cis系薄膜太陽電池の光吸収層の作製方法 |
| US11/722,604 US20080110495A1 (en) | 2004-12-28 | 2005-12-26 | Method for Forming Light Absorption Layer of Cis Type Thin-Film Solar Cell |
| EP05819563.7A EP1833097A4 (en) | 2004-12-28 | 2005-12-26 | Method for forming light absorbing layer in cis-based thin film solar battery |
| CNB2005800453373A CN100490184C (zh) | 2004-12-28 | 2005-12-26 | 用于形成cis型薄膜太阳能电池的光吸收层的方法 |
| KR1020077014672A KR101193034B1 (ko) | 2004-12-28 | 2005-12-26 | Cis계 박막 태양 전지의 광 흡수층의 제작방법 |
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| JP2006186114A JP2006186114A (ja) | 2006-07-13 |
| JP4131965B2 true JP4131965B2 (ja) | 2008-08-13 |
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| US8017860B2 (en) * | 2006-05-15 | 2011-09-13 | Stion Corporation | Method and structure for thin film photovoltaic materials using bulk semiconductor materials |
| US9105776B2 (en) * | 2006-05-15 | 2015-08-11 | Stion Corporation | Method and structure for thin film photovoltaic materials using semiconductor materials |
| US8414961B1 (en) * | 2006-12-13 | 2013-04-09 | Nanosolar, Inc. | Solution deposited transparent conductors |
| US20080300918A1 (en) * | 2007-05-29 | 2008-12-04 | Commercenet Consortium, Inc. | System and method for facilitating hospital scheduling and support |
| KR100871541B1 (ko) * | 2007-06-26 | 2008-12-05 | 주식회사 동부하이텍 | 이미지센서 및 그 제조방법 |
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| Publication number | Publication date |
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| EP1833097A1 (en) | 2007-09-12 |
| US20080110495A1 (en) | 2008-05-15 |
| KR101193034B1 (ko) | 2012-10-22 |
| CN100490184C (zh) | 2009-05-20 |
| WO2006070745A1 (ja) | 2006-07-06 |
| JP2006186114A (ja) | 2006-07-13 |
| EP1833097A4 (en) | 2017-03-29 |
| CN101095240A (zh) | 2007-12-26 |
| KR20070097472A (ko) | 2007-10-04 |
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