Enhanced Photovoltaic Performance of Perovskite Solar Cells by Copper Chloride (CuCl2) as an Additive in Single Solvent Perovskite Precursor

다국어 초록 (Multilingual Abstract)

In this letter, we have introduced copper chloride (CuCl 2 ) as an additive in the CH 3 NH 3 PbI 3 precursor solution to improvethe surface morphology and crystallinity of CH 3 NH 3 PbI 3 fi lms in a single solvent system. Our optimized perovskite solarcells (PSCs) with 2.5 mol% CuCl 2 additive showed best power conversion effi ciency (PCE) of 15.22%. The PCE of the PSCsfabricated by CuCl 2 (2.5 mol%) additive engineering was 56% higher than the PSC fabricated with pristine CH 3 NH 3 PbI 3 .

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