Research on power loss of solar cell modules


By Wang Qi, Supervisor, A&T Division, China Sunergy (R&D) Co., Ltd.; Zhichun Ni, Director, China Sunergy (R&D) Co., Ltd.; Fangxing Ren, China Sunergy (R&D) Co., Ltd.; Jianhua Zhao, CTO, China Sunergy (R&D) Co., Ltd.; Aihua Wang, China Sunergy (R&D) Co., Ltd.

After the encapsulation step, a c-Si solar module’s output is usually decreased, in comparison to its cells’ power, which is referred to as ‘power loss’. This paper focuses on the various factors that can impact power loss of solar modules, such as solar cell classification, encapsulation material, match of solar cells, the encapsulation process used, and so on. The conclusion indicates that power loss in solar modules can be significantly decreased with a resulting increment of a module’s output by appropriately optimizing those factors.

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The 12th Edition was published in May 2011. Highlights from this edition include Conergy’s in-depth study of MES in PV facilities; University of Konstanz heralds the return of UMG-Si; RWTH Aachen University details the gettering options available for selective emitters; TU Delft presents an overview of breakage issues for silicon wafers and cells; and the University of Toledo outlines the benefits of RTSE in polarized light metroscopy.

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