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The goal of this paper is to investigate the stability of CdTe solar cells exposed to high temperature storage. In particular, we want to investigate the behavior of cells during short-term degradation test (up to 40 h). Several cells, having different thickness of copper in the contacts and of CdTe absorber were investigated. The results, obtained through combined EQE, dark and light IV, and photovoltage decay, indicate that the Cu metal contact plays a role in the degradation of the solar cells, and provide detailed insight on the related processes. |
