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- W4386491504 abstract "The quality of the perovskite active layer is the critical factor that affects the photovoltaic performance of perovskite solar cells (PSCs). In this paper, the 8-hydroxyquinoline lead (Pbq2) containing pyridine bonds, C–O bonds, and quinoline ring groups was introduced into the MAPbI3 perovskite layer to improve the performances and stabilities of PSCs. The doped Pbq2 could adjust the growth of perovskite crystals by coordinating interactions between the above functional groups in Pbq2 with Pb2+, MA+, and I− in perovskite together. And as a result, high-quality and dense perovskite films with larger grain sizes were obtained. At the same time, large molecule-sized Pbq2 chelated at the grain boundary of perovskite, which passivated the defects and suppressed non-radiative recombination of photo carriers and ion migration at grain boundaries. Therefore, the interface energy barrier between the perovskite layer and the electron transfer layer (ETL) was reduced by the Pbq2 doping, which accelerated the separation and transportation of carriers at the ETL/perovskite layer interface. Finally, Pbq2-modified PSCs achieved a power conversion efficiency (PCE) of 20.82% with an open circuit voltage (Voc) of 1.144 V and a fill factor (FF) of 77.4% compared to a PCE of 17.87% for the reference sample. Furthermore, Pbq2-modified PSCs showed better light stability and moisture resistance in air conditions." @default.
- W4386491504 created "2023-09-07" @default.
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- W4386491504 date "2023-10-01" @default.
- W4386491504 modified "2023-09-27" @default.
- W4386491504 title "High performance and stable perovskite solar cells modified with 8-hydroxyquinoline lead" @default.
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- W4386491504 doi "https://doi.org/10.1016/j.optmat.2023.114321" @default.
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