High‐performance low bandgap thin film solar cells for tandem applications [* Cross-Reference *]

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Hossam Elanzeery; Finn Babbe; Michele Melchiorre; Florian Werner; Susanne Siebentritt, 2026, "High‐performance low bandgap thin film solar cells for tandem applications [* Cross-Reference *]", https://lore.list.lu/citation?persistentId=perma:LIST.U3E994, LIST Open Repository, V1
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Description
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. (2018-05-28)
***This entry has been automatically imported via OpenAlex by LIST harvest scripts. Please refer to https://doi.org/10.1002/pip.3026 for the original and latest version of the publication*** (2026-07-01)
Subject Engineering; Physics
Keyword Tandem, Band gap, Materials science, Optoelectronics, Thin film, Solar cell, Nanotechnology
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