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- Title
Lead‐Free Solar Cells based on Tin Halide Perovskite Films with High Coverage and Improved Aggregation.
- Authors
Liu, Jiewei; Ozaki, Masashi; Yakumaru, Shinya; Handa, Taketo; Nishikubo, Ryosuke; Kanemitsu, Yoshihiko; Saeki, Akinori; Murata, Yasujiro; Murdey, Richard; Wakamiya, Atsushi
- Abstract
Abstract: Two simple methods to improve tin halide perovskite film structure are introduced, aimed at increasing the power conversion efficiency of lead free perovskite solar cells. First, a hot antisolvent treatment (HAT) was found to increase the film coverage and prevent electrical shunting in the photovoltaic device. Second, it was discovered that annealing under a low partial pressure of dimethyl sulfoxide vapor increased the average crystallite size. The topographical and electrical qualities of the perovskite films are substantively improved as a result of the combined treatments, facilitating the fabrication of tin‐based perovskite solar cell devices with power conversion efficiencies of over 7 %.
- Subjects
SOLAR cells; PEROVSKITE; HALIDES; CLUSTERING of particles; LEAD
- Publication
Angewandte Chemie, 2018, Vol 130, Issue 40, p13405
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201808385