发明授权
EP1872411B1 RÜCKKONTAKTIERTE SOLARZELLE UND VERFAHREN ZU DEREN HERSTELLUNG
有权
RÜCKKONTAKTIERTESOLARZELLE UND VERFAHREN ZU DEREN HERSTELLUNG
- 专利标题： RÜCKKONTAKTIERTE SOLARZELLE UND VERFAHREN ZU DEREN HERSTELLUNG
- 专利标题（英）： Rear contact solar cell and method for making same
- 专利标题（中）： RÜCKKONTAKTIERTESOLARZELLE UND VERFAHREN ZU DEREN HERSTELLUNG
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申请号： EP06724249.5申请日： 2006-04-11
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公开(公告)号： EP1872411B1公开(公告)日： 2008-09-24
- 发明人: ENGELHART, Peter , TEPPE, Andreas , GRISCHKE, Rainer , WADE, Robert
- 申请人： Institut für Solarenergieforschung GmbH
- 申请人地址： Am Ohrberg 1 31860 Emmerthal DE
- 专利权人： Institut für Solarenergieforschung GmbH
- 当前专利权人： Institut für Solarenergieforschung GmbH
- 当前专利权人地址： Am Ohrberg 1 31860 Emmerthal DE
- 代理机构： Maiwald Patentanwalts GmbH
- 优先权： DE102005017767 20050416; DE102005040871 20050829
- 国际公布： WO2006111304 20061026
- 主分类号： H01L31/0224
- IPC分类号： H01L31/0224 ; H01L31/18
摘要：
The invention concerns a solar cell (1) and a method for making same, said solar cell (1) comprising on its rear surface (3) both the emission contact (43) and the base contact (45), those two contacts (43, 45) being electrically isolated from each other by flanks (5) whereof the metal coating has been removed. The emitting zones (4) of the rear surface (3) of the cell are connected by channels to the transmitter (9) of the front face (8) of the cell. The emitting zones (4) of the rear surface (3) of the cell and the channels (7) consist of a laser. The metal coating of the side walls is removed by selective etching, said metal coating being removed only in the zone of the flanks (5) where the etching barrier layer (11) is insufficient.
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