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Nuclei position-control and crystal growth-guidance on frozen substrate for high performance perovskite solar cell

Abstract

Nucleation and crystal growth are key stages of high-quality perovskite films that dominate the performance of perovskite solar cells. However, the position of nuclei in the films and the orientation of crystal growth have not been intendedly controlled during fabrication yet. In this work, we developed a method of spin-coating perovskite films on frozen substrates to control the position of the nuclei and the direction of crystal growth at the same time. In this way, the formation position of the crystal nuclei and the growth orientation of the perovskite crystal in the perovskite film can be simultaneously controlled. A high quality of perovskite film with grain spanning the whole film thickness has been obtained based on this new method. And an efficient inverted planar solar cell (ITO/PEDOT:PSS/CH3NH3PbI3/PC61BM/BCP/Ag) with the highest power conversion efficiency of 17.14 % and open-circuit voltage of 1.14 V has been achieved by this technique

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Supplementary files

Publication details

The article was received on 01 Apr 2019, accepted on 14 May 2019 and first published on 15 May 2019


Article type: Paper
DOI: 10.1039/C9NR02777G
Nanoscale, 2019, Accepted Manuscript

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    Nuclei position-control and crystal growth-guidance on frozen substrate for high performance perovskite solar cell

    G. Wang, L. Liao, L. Niu, L. Chen, W. Li, C. Xu, E. Mbeng, Y. Yao, D. Liu and Q. L. Song, Nanoscale, 2019, Accepted Manuscript , DOI: 10.1039/C9NR02777G

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