Electronic Materials Letters

The Korean Institute of Metals and Materials (대한금속재료학회)
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Enhanced Photovoltaic Performance of Perovskite Solar Cells by Copper Chloride (CuCl2) as an Additive in Single Solvent Perovskite Precursor

  • Kayesh, Md. Emrul (Photovoltaic Materials Group, Center for Green Research on Energy and Environmental Materials, National Institute for Materials Science (NIMS)) ;
  • Matsuishi, Kiyoto (Faculty of Pure and Applied Sciences, University of Tsukuba) ;
  • Chowdhury, Towhid H. (Photovoltaic Materials Group, Center for Green Research on Energy and Environmental Materials, National Institute for Materials Science (NIMS)) ;
  • Kaneko, Ryuji (Photovoltaic Materials Group, Center for Green Research on Energy and Environmental Materials, National Institute for Materials Science (NIMS)) ;
  • Noda, Takeshi (Photovoltaic Materials Group, Center for Green Research on Energy and Environmental Materials, National Institute for Materials Science (NIMS)) ;
  • Islam, Ashraful (Photovoltaic Materials Group, Center for Green Research on Energy and Environmental Materials, National Institute for Materials Science (NIMS))
  • Received : 2018.03.16
  • Accepted : 2018.05.27
  • Published : 2018.11.10
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Abstract

In this letter, we have introduced copper chloride ($CuCl_2$) as an additive in the $CH_3NH_3PbI_3$ precursor solution to improve the surface morphology and crystallinity of $CH_3NH_3PbI_3$ films in a single solvent system. Our optimized perovskite solar cells (PSCs) with 2.5 mol% $CuCl_2$ additive showed best power conversion efficiency (PCE) of 15.22%. The PCE of the PSCs fabricated by $CuCl_2$ (2.5 mol%) additive engineering was 56% higher than the PSC fabricated with pristine $CH_3NH_3PbI_3$.

Keywords

Acknowledgement

Supported by : JSPS

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