JP2009295809A - 裏面電極型太陽電池、太陽電池ストリングおよび太陽電池モジュール - Google Patents
裏面電極型太陽電池、太陽電池ストリングおよび太陽電池モジュール Download PDFInfo
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Abstract
【解決手段】第1導電型の半導体基板の裏面に、半導体基板よりも高濃度の第1導電型不純物を含む第1導電型の第1の電極形成領域と、第2導電型不純物を含む第2導電型の第2の電極形成領域と、半導体基板よりも高濃度の第1導電型不純物を含む第1導電型の電極非形成領域とを備え、電極非形成領域は、第2の電極形成領域と接している裏面電極型太陽電池、その裏面電極型太陽電池を用いた太陽電池ストリングおよび太陽電池モジュールである。
【選択図】図1
Description
図1(a)に本発明の裏面電極型太陽電池の一例の裏面の模式的な平面図を示し、図1(b)に図1(a)のIb−Ibに沿った模式的な断面を示す。
図2(a)に本発明の裏面電極型太陽電池の他の一例の裏面の模式的な平面図を示し、図2(b)に図2(a)のIIb−IIbに沿った模式的な断面を示す。
図3に、本発明の裏面電極型太陽電池の他の一例の裏面の模式的な平面図を示す。本実施の形態の裏面電極型太陽電池においては、第2導電型の半導体基板7を用いており、その第2導電型の半導体基板7の裏面の端部近傍領域内に第1導電型不純物を含む第1導電型の電極非形成領域6が島状に複数形成されている点に特徴がある。なお、電極非形成領域6の表面上には電極が形成されないことが好ましい。また、第2導電型の半導体基板7の裏面には、第1導電型不純物を含む櫛形状の第1導電型の第1の電極形成領域3と、半導体基板7よりも高濃度の第2導電型不純物を含む櫛形状の第2導電型の第2の電極形成領域2とが形成されており、第1の電極形成領域3上には第1導電型用電極5が形成され、第2の電極形成領域2上には第2導電型用電極4が形成されている。
図4に、本発明の裏面電極型太陽電池の他の一例の裏面の模式的な平面図を示す。本実施の形態の裏面電極型太陽電池においては、電極非形成領域6の形状が島状ではなく、帯状となっている点に特徴がある。
図11(a)に本発明の裏面電極型太陽電池の他の一例の裏面の模式的な平面図を示し、図11(b)に図11(a)のXIb−XIbに沿った模式的な断面を示す。
図12(a)に本発明の裏面電極型太陽電池の他の一例の裏面の模式的な平面図を示し、図12(b)に図12(a)のXIIb−XIIbに沿った模式的な断面を示す。
以下、図5〜図9を参照して、図2(a)および図2(b)に示す構成を有する本発明の裏面電極型太陽電池の複数を電気的に接続して形成した本発明の太陽電池ストリングの一例およびその太陽電池ストリングを封止材で封止することにより形成した本発明の太陽電池モジュールの一例について説明する。
Claims (10)
- 第1導電型の半導体基板の裏面に、前記半導体基板よりも高濃度の第1導電型不純物を含む第1導電型の第1の電極形成領域と、第2導電型不純物を含む第2導電型の第2の電極形成領域と、前記半導体基板よりも高濃度の第1導電型不純物を含む第1導電型の電極非形成領域とを備え、
前記電極非形成領域は、前記第2の電極形成領域と接していることを特徴とする、裏面電極型太陽電池。 - 第2導電型の半導体基板の裏面に、第1導電型不純物を含む第1導電型の第1の電極形成領域と、前記半導体基板よりも高濃度の第2導電型不純物を含む第2導電型の第2の電極形成領域と、第1導電型不純物を含む第1導電型の電極非形成領域とを備え、
前記電極非形成領域は、前記半導体基板の内部領域と接していることを特徴とする、裏面電極型太陽電池。 - 第1導電型の半導体基板の裏面に、前記半導体基板よりも高濃度の第1導電型不純物を含む第1導電型の第1の電極形成領域と、第2導電型不純物を含む第2導電型の第2の電極形成領域と、第2導電型不純物を含む第2導電型の電極非形成領域とを備え、
前記電極非形成領域は、前記第1の電極形成領域と接していることを特徴とする、裏面電極型太陽電池。 - 前記電極非形成領域は、前記半導体基板の前記裏面の端部近傍領域内に形成されていることを特徴とする、請求項1から3のいずれかに記載の裏面電極型太陽電池。
- 前記電極非形成領域上には電極が形成されていないことを特徴とする、請求項1から4のいずれかに記載の裏面電極型太陽電池。
- 前記電極非形成領域を複数備えていることを特徴とする、請求項1から5のいずれかに記載の裏面電極型太陽電池。
- 請求項1から6のいずれかに記載の裏面電極型太陽電池の複数と、
絶縁性基材と前記絶縁性基材の表面上に形成された配線とを有する配線基板とを含み、
前記裏面電極型太陽電池の電極が前記配線基板の配線上に設置されるように前記裏面電極型太陽電池の複数を前記配線基板上に配列することによって前記裏面電極型太陽電池の複数が電気的に接続されている、太陽電池ストリング。 - 請求項7に記載の太陽電池ストリングと、前記太陽電池ストリングを封止する封止材とを備えた、太陽電池モジュール。
- 前記封止材は、エチレンビニルアセテート樹脂、エポキシ樹脂、アクリル樹脂、ウレタン樹脂、オレフィン系樹脂、ポリエステル樹脂、シリコーン樹脂、ポリスチレン樹脂、ポリカーボネート樹脂およびゴム系樹脂からなる群から選択された少なくとも1種の透明樹脂を含むことを特徴とする、請求項8に記載の太陽電池モジュール。
- 前記裏面電極型太陽電池の電極と前記配線基板の配線とが直接接触していることを特徴とする、請求項8または9に記載の太陽電池モジュール。
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PCT/JP2009/055909 WO2009147890A1 (ja) | 2008-06-05 | 2009-03-25 | 裏面電極型太陽電池、太陽電池ストリングおよび太陽電池モジュール |
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WO2011099318A1 (ja) * | 2010-02-09 | 2011-08-18 | シャープ株式会社 | 太陽電池ストリング、太陽電池モジュールおよび太陽電池セル |
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US20120291846A1 (en) * | 2010-01-22 | 2012-11-22 | Rui Mikami | Back contact solar cell, wiring sheet, solar cell having wiring sheet, solar cell module and production method for solar cell having wiring sheet |
KR101642158B1 (ko) | 2011-01-04 | 2016-07-22 | 엘지전자 주식회사 | 태양 전지 모듈 |
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JP2016082109A (ja) * | 2014-10-20 | 2016-05-16 | シャープ株式会社 | 配線シート付き太陽電池セル及び太陽電池モジュール |
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JPH09148600A (ja) * | 1995-11-24 | 1997-06-06 | Sanyo Electric Co Ltd | 太陽電池及びその製造方法 |
JP2004071763A (ja) * | 2002-08-05 | 2004-03-04 | Toyota Motor Corp | 光起電力素子 |
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2011099318A1 (ja) * | 2010-02-09 | 2011-08-18 | シャープ株式会社 | 太陽電池ストリング、太陽電池モジュールおよび太陽電池セル |
JP2011165837A (ja) * | 2010-02-09 | 2011-08-25 | Sharp Corp | 太陽電池ストリング、太陽電池モジュールおよび太陽電池セル |
US20120305057A1 (en) * | 2010-02-09 | 2012-12-06 | Kohei Sawada | Solar battery string, solar battery module, and solar battery cell |
CN102822993A (zh) * | 2010-02-09 | 2012-12-12 | 夏普株式会社 | 太阳能电池串、太阳能电池组件及太阳能电池单元 |
CN102859719A (zh) * | 2010-04-27 | 2013-01-02 | At&S奥地利科技及系统技术股份公司 | 用于将光电模块与连接壳体触点接通的方法以及包括光电模块和连接壳体的系统 |
JP2013526041A (ja) * | 2010-04-27 | 2013-06-20 | アーテー・ウント・エス・オーストリア・テヒノロギー・ウント・ジュステームテッヒニク・アクチェンゲゼルシャフト | 太陽光発電モジュールを接続ハウジングに接点接続する方法、および太陽光発電モジュールと接続ハウジングから構成されるシステム |
CN103426940A (zh) * | 2013-03-22 | 2013-12-04 | 连云港神舟新能源有限公司 | 一种交错背接触ibc太阳能电池片电极结构 |
CN114649443A (zh) * | 2022-03-03 | 2022-06-21 | 浙江爱旭太阳能科技有限公司 | 背接触太阳能电池串及其制备方法、电池组件及光伏系统 |
CN114649443B (zh) * | 2022-03-03 | 2024-04-16 | 浙江爱旭太阳能科技有限公司 | 背接触太阳能电池串及其制备方法、电池组件及光伏系统 |
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WO2009147890A1 (ja) | 2009-12-10 |
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