Potential-Induced Degradation of CuIn$_{1-x} \hbox{Ga}_{x}$Se$_{2}$ Thin Film Solar Cells
| Autor: | Adam Hultqvist, T. Jarmar, Marika Edoff, Bruce G. Aitken, K. Fuller, K. Zhang, Pedro M. P. Salomé, Viktor Fjällström, Carlo Kosik Williams |
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| Rok vydání: | 2013 |
| Předmět: |
Soda-lime glass
Materials science business.industry Analytical chemistry Substrate (chemistry) Condensed Matter Physics Potential induced degradation Chemical reaction Copper indium gallium selenide solar cells Electronic Optical and Magnetic Materials Stress (mechanics) Photovoltaics Degradation (geology) Electrical and Electronic Engineering business |
| Zdroj: | IEEE Journal of Photovoltaics. 3:1090-1094 |
| ISSN: | 2156-3403 2156-3381 |
| DOI: | 10.1109/jphotov.2013.2253833 |
| Popis: | The use of Na-free or low Na content glass substrates is observed to enhance the resiliency to potential-induced degradation, as compared with glass substrates with high Na content, such as soda lime glass (SLG). The results from stress tests in this study suggest that degradation caused by a combination of heat and bias across the SLG substrate is linked to increased Na concentration in the CdS and Cu(In,Ga)Se2 (CIGS) layers in CIGS-based solar cells. The degradation during the bias stress is dramatic. The efficiency drops to close to 0% after 50 h of stressing. On the other hand, cells on Na-free and low Na content substrates exhibited virtually no efficiency degradation. The degraded cells showed partial recovery by resting at room temperature without bias; thus, the degradation is nonpermanent and may be due to Na migration and accumulation rather than chemical reaction. |
| Databáze: | OpenAIRE |
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