发明授权
US08890025B2 Method and apparatus to scribe thin film layers of cadmium telluride solar cells 有权
划线碲化镉太阳能电池薄膜层的方法和装置

Method and apparatus to scribe thin film layers of cadmium telluride solar cells
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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