Efficient perovskite solar cells based on low-temperature solution-processed (CH3NH3)PbI3 perovskite/CuInS2 planar heterojunctions

Chong Chen; Chunxi Li; Fumin Li; Fan Wu; Furui Tan; Yong Zhai; Weifeng Zhang

doi:10.1186/1556-276X-9-457

Efficient perovskite solar cells based on low-temperature solution-processed (CH3NH3)PbI3 perovskite/CuInS2 planar heterojunctions

Nanoscale Res Lett. 2014 Sep 2;9(1):457. doi: 10.1186/1556-276X-9-457. eCollection 2014.

Authors

Chong Chen¹, Chunxi Li¹, Fumin Li¹, Fan Wu², Furui Tan¹, Yong Zhai¹, Weifeng Zhang¹

Affiliations

¹ School of Physics and Electronics, Henan University, Kaifeng 475004, People's Republic of China ; People's Republic of China and Henan Key Laboratory of Photovoltaic Materials, Henan University, Kaifeng 475004, People's Republic of China.
² Institute of Modern Physics and School of Science, Huzhou Normal University, Huzhou 313000, People's Republic of China.

Abstract

In this work, the solution-processed CH3NH3PbI3 perovskite/copper indium disulfide (CuInS2) planar heterojunction solar cells with Al2O3 as a scaffold were fabricated at a temperature as low as 250°C for the first time, in which the indium tin oxide (ITO)-coated glass instead of the fluorine-doped tin oxide (FTO)-coated glass was used as the light-incidence electrode and the solution-processed CuInS2 layer was prepared to replace the commonly used TiO2 layer in previously reported perovskite-based solar cells. The influence of the thickness of the as-prepared CuInS2 film on the performance of the ITO/CuInS2(n)/Al2O3/(CH3NH3)PbI3/Ag cells was investigated. The ITO/CuInS2(2)/Al2O3/(CH3NH3)PbI3/Ag cell showed the best performance and achieved power conversion efficiency up to 5.30%.

Keywords: (CH3NH3)PbI3; CuInS2; Perovskite; Solar cells; Solution-processed.