Elucidating the Effect of the Different Buffer Layers on the Thermal Stability of CIGSe Solar Cells
| Autor: | Florian Ruske, Hasan A. Yetkin, Rutger Schlatmann, Ibrahim Simsek, Ruslan Muydinov, Reiner Klenk, Alejandra Villanueva Tovar, Bernd Szyszka, Tobias Bertram, Marin Rusu, Tim Kodalle, Christian A. Kaufmann, Josefa Ibaceta-Jaña |
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| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Materials science Tandem business.industry Annealing (metallurgy) Photovoltaic system Energy conversion efficiency 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Electronic Optical and Magnetic Materials Stress (mechanics) 0103 physical sciences Degradation (geology) Optoelectronics Thermal stability Electrical and Electronic Engineering Thin film 0210 nano-technology business |
| Zdroj: | IEEE Journal of Photovoltaics. 11:648-657 |
| ISSN: | 2156-3403 2156-3381 |
| Popis: | In this contribution, the impact of thermal stress on Cu(In,Ga)Se $_{2}$ (CIGSe) thin film photovoltaic devices is investigated. The tolerance of such devices to high temperatures is of particular interest for processing transparent conductive oxides (TCOs) in order to further close the gap to the theoretical efficiency limit and for their potential use as bottom devices in tandem applications in order to overcome the theoretical efficiency limit of single junction solar cells. When CdS-buffered CIGSe high efficiency solar cells are subjected to thermal stress, elemental interdiffusion of Na and Cd between the absorber and the window layers as well as chemical reactions at the CIGSe/CdS interface result in a degraded power conversion efficiency (PCE). Here, we compare the degradation mechanisms of CdS and GaO $_{x}$ buffered CIGSe solar cells under thermal stress. A model explaining the observed degradation behaviors is proposed. |
| Databáze: | OpenAIRE |
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