发明授权
- 专利标题: Method and apparatus to scribe thin film layers of cadmium telluride solar cells
- 专利标题(中): 划线碲化镉太阳能电池薄膜层的方法和装置
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申请号: US13078787申请日: 2011-04-01
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公开(公告)号: US08890025B2公开(公告)日: 2014-11-18
- 发明人: Tullio Panarello , Mathew Rekow , Richard Murison
- 申请人: Tullio Panarello , Mathew Rekow , Richard Murison
- 申请人地址: CA Quebec
- 专利权人: ESI-Pyrophotonics Lasers Inc.
- 当前专利权人: ESI-Pyrophotonics Lasers Inc.
- 当前专利权人地址: CA Quebec
- 代理机构: Haynes Beffel & Wolfeld LLP
- 主分类号: B23K26/36
- IPC分类号: B23K26/36 ; B23K26/40 ; B23K26/06 ; B23K26/0622
摘要:
A method of laser scribing a CdTe solar cell structure includes providing a laser operable to produce an optical pulse. The optical pulse is characterized by a temporal profile having a first power level during a first portion of the optical pulse and a second power level less than the first power level during a second portion of the optical pulse. The method also includes directing the optical pulse to impinge on the CdTe solar cell structure. The CdTe solar cell structure includes a substrate, a transmission spectrum control layer adjacent the substrate; a barrier layer adjacent the transmission spectrum control layer, and a conductive layer adjacent the barrier layer. The method further includes initiating a removal process for the conductive layer and terminating the removal process prior to removing the barrier layer.
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