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- W4322773032 abstract "Tin (IV) oxide is a highly promising electron transport layer (ETL) for lead halide perovskite solar cells due to its high conductivity, transparency, wide band gap, and the possibility of low-temperature processing. Nonetheless, charge carrier recombination processes at the SnO 2 /perovskite interface diminish the device performance. Here, we demonstrate that SnO 2 doping with guanidine hydrochloride (G-SnO 2 ) leads to efficient surface passivation and a larger band offset between the ETL and the perovskite layer, resulting in reduced voltage losses and faster electron transfer. Moreover, G-SnO 2 facilitates the growth of highly crystalline perovskite layers. Consequently, a power conversion efficiency of up to 23.48% and a high open-circuit voltage of 1.18 V are obtained in solar cells incorporating the G-SnO 2 ETL. These devices also exhibited negligible hysteresis and maintained more than 96% of their initial power conversion efficiency after 1,250 h exposure to the air without encapsulation." @default.
- W4322773032 created "2023-03-03" @default.
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- W4322773032 date "2023-03-02" @default.
- W4322773032 modified "2023-10-09" @default.
- W4322773032 title "Enhanced performance of planar perovskite solar cells by doping the SnO2 electron transport layer with guanidinium chloride" @default.
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- W4322773032 doi "https://doi.org/10.3389/fmats.2023.1118641" @default.
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