JP5520290B2 - 半導体装置及び太陽電池製造方法 - Google Patents
半導体装置及び太陽電池製造方法 Download PDFInfo
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Description
Claims (28)
- 不感層効果を減少させるドーピングプロフィールを形成するための、上面に最も近い第1の注入段階、第2の注入段階、及び、PN接合に最も近い第3の注入段階で、深さに対する原子濃度が異なるようにドーパントがドーピングされたテクスチャ領域と、グリッド線を形成するための、上面に最も近い第1の注入段階、第2の注入段階、及び、PN接合に最も近い第3の注入段階で、深さに対する原子濃度が異なるようにドーパントがドーピングされた、該グリッド線を形成する非テクスチャ領域とを含む表面を有する基板と、
上記グリッド線に接続された導電性のフィンガとを備える半導体装置。 - 上記テクスチャ領域は、光受容性であることを特徴する請求項1記載の半導体装置。
- 上記テクスチャ領域のそれぞれは、複数のテクスチャ要素を有することを特徴とする請求項1記載の半導体装置。
- 上記テクスチャ要素のそれぞれは、ピラミッド形状であることを特徴とする請求項3記載の半導体装置。
- 上記テクスチャ要素のそれぞれは、(111)面を有することを特徴とする請求項4記載の半導体装置。
- 上記テクスチャ要素のそれぞれは、ドーム形状であることを特徴とする請求項3記載の半導体装置。
- 上記複数のテクスチャ要素のそれぞれ上の上記ドーパントの厚さは、均一であることを特徴とする請求項3記載の半導体装置。
- 上記テクスチャ領域のそれぞれは、反射防止コーティングで保護されていることを特徴とする請求項1記載の半導体装置。
- 上記ドーパントは、n型であり、上記基板は、p型であることを特徴とする請求項1記載の半導体装置。
- 上記ドーパントは、p型であり、上記基板は、n型であることを特徴とする請求項1記載の半導体装置。
- 上記非テクスチャ領域の上記ドーパントには、金属シードが点在することを特徴とする請求項1記載の半導体装置。
- 上記基板は、不純物を含む金属コンタクトに接続された底部を有することを特徴とする請求項1記載の半導体装置。
- 太陽電池を製造する太陽電池製造方法において、
基板の非テクスチャ領域及びテクスチャ領域を有する表面をイオンに暴露して、該テクスチャ領域に、不感層効果を減少させるドーピングプロフィールを形成するための、上面に最も近い第1の注入段階、第2の注入段階、及び、PN接合に最も近い第3の注入段階で、深さに対する原子濃度が異なるようにドーパントを注入し、該非テクスチャ領域に、グリッド線を形成するための、上面に最も近い第1の注入段階、第2の注入段階、及び、PN接合に最も近い第3の注入段階で、深さに対する原子濃度が異なるようにドーパントを注入する工程と、
接点フィンガをグリッド線に接続する工程とを有する太陽電池製造方法。 - 上記テクスチャ領域のそれぞれは、複数のテクスチャ要素を備えることを特徴とする請求項13記載の太陽電池製造方法。
- 上記複数のテクスチャ要素は、ピラミッド形状であることを特徴とする請求項14記載の太陽電池製造方法。
- 上記複数のテクスチャ要素は、半球形状であることを特徴とする請求項14記載の太陽電池製造方法。
- 上記表面を暴露することは、上記ドーパントを含むイオンビームを、該表面に向けることであることを特徴とする請求項13記載の太陽電池製造方法。
- 上記イオンビームは、上記ドーパントを上記複数のテクスチャ要素のそれぞれに別々に注入することを特徴とする請求項17記載の太陽電池製造方法。
- 上記イオンビームを、上記表面全体を線形的に走査する工程を更に有し、
この工程によって、上記ドーパントを注入することを特徴とする請求項17記載の太陽電池製造方法。 - 上記表面を暴露することは、該表面をプラズマビームによって包み込むことであることを特徴とする請求項13記載の太陽電池製造方法。
- 上記テクスチャ領域は、光受容性であることを特徴とする請求項13記載の太陽電池製造方法。
- イオン源が上記複数のテクスチャ要素のそれぞれの表面に対して略垂直であるように、該イオン源、上記基板又はその両方を回転させる工程を更に有する請求項13記載の太陽電池製造方法。
- 上記非テクスチャ領域における上記ドーパントの抵抗率は、約20Ω/□であることを特徴とする請求項13記載の太陽電池製造方法。
- 上記テクスチャ領域における上記ドーパントの抵抗率は、約100Ω/□であることを特徴とする請求項13記載の太陽電池製造方法。
- 上記グリッド線を金属接点フィンガに接続する工程を更に有する請求項13記載の太陽電池製造方法。
- 上記グリッド線と上記金属接点フィンガ間にシリサイドを形成する工程を更に有する請求項25記載の太陽電池製造方法。
- 太陽電池を製造する太陽電池製造方法において、
基板の上面をエッチングして、平面領域間に、ピラミッド形状の要素を有するテクスチャ光受容領域を形成する工程と、
イオンビームを上記上面向け、不感層効果を減少させるドーピングプロフィールを形成するための、上面に最も近い第1の注入段階、第2の注入段階、及び、PN接合に最も近い第3の注入段階で、深さに対する原子濃度が異なるようにドーパントを、上記テクスチャ光受容領域に注入し、グリッド線を形成するための、上面に最も近い第1の注入段階、第2の注入段階、及び、PN接合に最も近い第3の注入段階で、深さに対する原子濃度が異なるようにドーパントを、グリッド線を形成する上記平面領域に注入する工程と、
上記グリッド線に接点フィンガを接続する工程とを有し、
上記テクスチャ光受容領域における上記ドーパントの抵抗率は、100Ω/□未満であり、上記平面領域における上記ドーパントの抵抗率は、約20Ω/□であることを特徴とする太陽電池製造方法。 - 上部層及び下部層を有する基板と、
グリッド線を金属フィンガに接続するシリサイド要素と、
上記下部層に接続された接点とを備え、
上記上部層は、不感層効果を減少させるドーピングプロフィールを形成するための、上面に最も近い第1の注入段階、第2の注入段階、及び、PN接合に最も近い第3の注入段階で、深さに対する原子濃度が異なるようにドーパントがドーピングされた、ピラミッド形状の領域と、グリッド線を形成するための、上面に最も近い第1の注入段階、第2の注入段階、及び、PN接合に最も近い第3の注入段階で、深さに対する原子濃度が異なるようにドーパントがドーピングされた、上記グリッド線を形成する略平面領域とを含む表面を有し、隣接した略平面領域間の距離は、50ミクロン未満であり、上記基板の厚さ50ミクロン未満であることを特徴とする太陽電池。
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- 2009-06-11 EP EP09763656.7A patent/EP2308060A4/en not_active Withdrawn
- 2009-06-11 US US12/483,017 patent/US20090308440A1/en not_active Abandoned
- 2009-06-11 JP JP2011513706A patent/JP2011524640A/ja active Pending
- 2009-06-11 KR KR1020117000605A patent/KR20110042053A/ko not_active Application Discontinuation
- 2009-06-11 EP EP09763666A patent/EP2319088A1/en not_active Withdrawn
- 2009-06-11 WO PCT/US2009/047102 patent/WO2009152375A1/en active Application Filing
- 2009-06-11 KR KR1020117000467A patent/KR20110042051A/ko not_active Application Discontinuation
-
2011
- 2011-11-19 HK HK11112561.1A patent/HK1158366A1/zh not_active IP Right Cessation
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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US9303314B2 (en) | 2009-06-23 | 2016-04-05 | Intevac, Inc. | Ion implant system having grid assembly |
US9741894B2 (en) | 2009-06-23 | 2017-08-22 | Intevac, Inc. | Ion implant system having grid assembly |
US9324598B2 (en) | 2011-11-08 | 2016-04-26 | Intevac, Inc. | Substrate processing system and method |
US9875922B2 (en) | 2011-11-08 | 2018-01-23 | Intevac, Inc. | Substrate processing system and method |
US9318332B2 (en) | 2012-12-19 | 2016-04-19 | Intevac, Inc. | Grid for plasma ion implant |
US9583661B2 (en) | 2012-12-19 | 2017-02-28 | Intevac, Inc. | Grid for plasma ion implant |
Also Published As
Publication number | Publication date |
---|---|
US20090308450A1 (en) | 2009-12-17 |
KR20110050423A (ko) | 2011-05-13 |
JP2011524639A (ja) | 2011-09-01 |
US20090309039A1 (en) | 2009-12-17 |
US20090308439A1 (en) | 2009-12-17 |
WO2009152368A1 (en) | 2009-12-17 |
US8871619B2 (en) | 2014-10-28 |
EP2308060A4 (en) | 2013-10-16 |
CN102099923A (zh) | 2011-06-15 |
EP2319087A1 (en) | 2011-05-11 |
HK1158366A1 (zh) | 2012-07-13 |
WO2009152378A1 (en) | 2009-12-17 |
EP2304803A1 (en) | 2011-04-06 |
EP2308060A1 (en) | 2011-04-13 |
JP2011524638A (ja) | 2011-09-01 |
US8697553B2 (en) | 2014-04-15 |
CN102150278A (zh) | 2011-08-10 |
WO2009152375A1 (en) | 2009-12-17 |
CN102150277A (zh) | 2011-08-10 |
KR20110042051A (ko) | 2011-04-22 |
US20090308440A1 (en) | 2009-12-17 |
JP2011525301A (ja) | 2011-09-15 |
KR20110042053A (ko) | 2011-04-22 |
EP2319088A1 (en) | 2011-05-11 |
JP2011524640A (ja) | 2011-09-01 |
WO2009152365A1 (en) | 2009-12-17 |
CN102099923B (zh) | 2016-04-27 |
CN102099870A (zh) | 2011-06-15 |
KR20110042052A (ko) | 2011-04-22 |
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