Abstract
In this letter, we have introduced copper chloride (CuCl2) as an additive in the CH3NH3PbI3 precursor solution to improve the surface morphology and crystallinity of CH3NH3PbI3 films in a single solvent system. Our optimized perovskite solar cells (PSCs) with 2.5 mol% CuCl2 additive showed best power conversion efficiency (PCE) of 15.22%. The PCE of the PSCs fabricated by CuCl2 (2.5 mol%) additive engineering was 56% higher than the PSC fabricated with pristine CH3NH3PbI3.
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Ashraful Islam acknowledges the support from JSPS KAKENHI grant No. 18H02079.
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Emrul Kayesh, M., Matsuishi, K., Chowdhury, T.H. et al. Enhanced Photovoltaic Performance of Perovskite Solar Cells by Copper Chloride (CuCl2) as an Additive in Single Solvent Perovskite Precursor. Electron. Mater. Lett. 14, 712–717 (2018). https://doi.org/10.1007/s13391-018-0075-5
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DOI: https://doi.org/10.1007/s13391-018-0075-5