Abstract To enhance the reliability of the thin-film solar cell technologies, it is required to analyze and understand the moisture-induced degradation. In this study, the moisture induced degradation of glass-to-glass CIGS module are comprehensively analyzed. CIGS modules are fabricated and tested under damp-heat conditions with periodical measurement of the electrical characteristics. Individual layers of the module are also investigated experimentally and the moisture induced degradation is discussed. A modified method to extract the diode model parameters from degraded I–V curves is proposed and applied to the degraded data. Finally, the degradation rates are modelled and the effect of model parameters degradation on the power of module are quantitatively compared. It suggests that the power degradation of CIGS module under the damp-heat environment is more affected by the enhanced recombination of the absorber layer than the degradation of the metal layer or the leakage over layers.

中文翻译：

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薄膜光伏组件受潮降解分析

摘要 为了提高薄膜太阳能电池技术的可靠性，需要分析和理解湿气引起的退化。在这项研究中，综合分析了玻璃对玻璃 CIGS 模块的湿气引起的降解。CIGS 模块在湿热条件下制造和测试，并定期测量电气特性。还通过实验研究了模块的各个层，并讨论了湿气引起的降解。提出了一种从退化的 I-V 曲线中提取二极管模型参数的改进方法，并将其应用于退化的数据。最后，对退化率进行建模，定量比较模型参数退化对组件功率的影响。