High-performance low bandgap thin film solar cells for tandem applications
In: Progress in Photovoltaics: Research and Applications, Jg. 26 (2018-07-01), Heft 7
Online
academicJournal
- 437 - 442
Thin film tandem solar cells provide a promising approach to achieve high efficiencies. These tandem cells require at least a bottom low bandgap and an upper high bandgap solar cell. In this contribution, 2 high-performance Cu(In,Ga)Se2 cells with bandgaps as low as 1.04 and 1.07 eV are presented. These cells have shown certified efficiencies of 15.7% and 16.6% respectively. Measuring these cells under a 780-nm longpass filter, corresponding to the bandgap of a typical top cell in tandem applications (1.57 eV), they achieved efficiencies of 7.9% and 8.3%. Admittance measurements showed no recombination active deep defects. One additional high-performance CuInSe2 thin film solar cell with bandgap of 0.95 eV and efficiency of 14.1% is presented. All 3 cells have the potential to be integrated as bottom low bandgap cells in thin film tandem applications achieving efficiencies around 24% stacked with an efficient high bandgap top cell.
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High-performance low bandgap thin film solar cells for tandem applications
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Autor/in / Beteiligte Person: | Elanzeery, H ; Babbe, F ; Melchiorre, M ; Werner, F ; Siebentritt, S |
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Zeitschrift: | Progress in Photovoltaics: Research and Applications, Jg. 26 (2018-07-01), Heft 7 |
Veröffentlichung: | eScholarship, University of California, 2018 |
Medientyp: | academicJournal |
Umfang: | 437 - 442 |
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