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- W4387568708 abstract "The aggregation of SnO2 nanocrystals due to van der Waals interactions is not conducive to the realization of a compact and pinhole-free electron transport layer (ETL). Herein, we have utilized potassium alginate (PA) to self-assemble SnO2 nanocrystals, forming a PA-SnO2 ETL for perovskite solar cells (PSCs). Through density functional theory (DFT) calculations, PA can be effectively absorbed onto the surface of SnO2. This inhibits the agglomeration of SnO2 nanocrystals in solution, forming a smoother pinhole-free film. This also changes the surface contact potential (CPD) of the SnO2 film, which leads to a reduction in the energy barrier between the ETL and the perovskite layers, promotes effective charge transfer, and reduces trap density. Consequently, the power conversion efficiency (PCE) of PSCs with a PA-SnO2 ETL increased from 19.24% to 22.16%, and the short-circuit current (JSC) was enhanced from 23.52 to 25.21 mA cm–2. Furthermore, the PA-modified unpackaged device demonstrates better humidity stability compared to the original device." @default.
- W4387568708 created "2023-10-13" @default.
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- W4387568708 date "2023-10-12" @default.
- W4387568708 modified "2023-10-14" @default.
- W4387568708 title "Multifunctional Polymer Restraint of the Agglomeration of SnO<sub>2</sub> Nanocrystals for Efficient and Stable Planar Perovskite Solar Cells" @default.
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- W4387568708 doi "https://doi.org/10.1021/acs.jpclett.3c01957" @default.
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