Publikation: Overcoming the Open-Circuit Voltage Losses in Narrow Bandgap Perovskites for All-Perovskite Tandem Solar Cells
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Narrow-bandgap (NBG) perovskite solar cells based on tin–lead mixed perovskite absorbers suffer from significant open-circuit voltage (VOC) losses due primarily to a high defect density and charge carrier recombination at the device interfaces. In this study, the VOC losses in NBG perovskite single junction cells (Eg = 1.21 eV) are addressed. The optimized NBG subcell is then used to fabricate highly efficient all-perovskite tandem solar cells (TSCs). The improvement in the VOC is achieved via the addition of a thin poly(triarylamine) interlayer between the poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) (PEDOT:PSS)-based hole transport layer (HTL) and the NBG perovskite. The optimal bilayer HTL results in a champion power conversion efficiency (PCE) of 20.3%, compared to 17.8% of the PEDOT:PSS-based control device. The VOC improvement of the single-junction NBG cell is also successfully transferred to all-perovskite TSC, resulting in a high VOC of 2.00 V and a PCE of 25.1%.
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TEMITMIE, Yektwork, Muhammad Irfan HAIDER, Daniele T. CUZZUPE, Lucia V. MERCALDO, Stefan KRANER, Paola Delli VENERI, Amare BENOR, Azhar FAKHARUDDIN, Lukas SCHMIDT-MENDE, 2024. Overcoming the Open-Circuit Voltage Losses in Narrow Bandgap Perovskites for All-Perovskite Tandem Solar Cells. In: ACS Materials Letters. ACS Publications. 2024, 6(11), S. 5190-5198. ISSN 2639-4979. eISSN 2639-4979. Verfügbar unter: doi: 10.1021/acsmaterialslett.4c01699BibTex
@article{Temitmie2024-11-04Overc-71162, year={2024}, doi={10.1021/acsmaterialslett.4c01699}, title={Overcoming the Open-Circuit Voltage Losses in Narrow Bandgap Perovskites for All-Perovskite Tandem Solar Cells}, number={11}, volume={6}, issn={2639-4979}, journal={ACS Materials Letters}, pages={5190--5198}, author={Temitmie, Yektwork and Haider, Muhammad Irfan and Cuzzupe, Daniele T. and Mercaldo, Lucia V. and Kraner, Stefan and Veneri, Paola Delli and Benor, Amare and Fakharuddin, Azhar and Schmidt-Mende, Lukas} }
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