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- W3213099084 abstract "• Cesium acetate (CsAc) is introduced to promote the conversion of PbI 2 to perovskite . • CsAc optimizes perovskite quality, reduces defects and non-radiative recombination. • CsAc optimized devices achieves a PCE of 22.01% with excellent stability. Although the best research-cell efficiency (>25%) of perovskite solar cells (PSCs) is comparable with that of silicon solar cells, the industrial application of PSCs is limited by the further improvement of performance and stability. Here, cesium acetate (CsAc) is introduced into lead iodide (PbI 2 ) precursor, which tunes the morphology and structure of PbI 2 and promotes the conversion of PbI 2 into stable large perovskite grains. Moreover, the introduction of Cs + and Ac − can fill up the FA + , I − vacancy and combine with uncoordinated Pb 2+ , which reduces the trap density. The CsAc introduction not only optimizes the quality of perovskite films, but also reduces the defects in the bulk phase, which facilitates the transportation of carriers and mitigates non-radiative recombination. Consequently, the CsAc optimized PSCs achieve a maximum power conversion efficiency (PCE) of 22.01%. Meanwhile, the unsealed device still maintains an initial PCE of 96% after being exposed in the air for 45 days." @default.
- W3213099084 created "2021-11-22" @default.
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- W3213099084 date "2021-12-01" @default.
- W3213099084 modified "2023-10-12" @default.
- W3213099084 title "Efficient and stable perovskite solar cells doped by cesium acetate" @default.
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- W3213099084 doi "https://doi.org/10.1016/j.solener.2021.11.001" @default.
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