Lead‐Free Solar Cells based on Tin Halide Perovskite Films with High Coverage and Improved Aggregation | Zendy

Liu Jiewei | Zendy; Ozaki Masashi | Zendy; Yakumaru Shinya | Zendy; Handa Taketo | Zendy; Nishikubo Ryosuke | Zendy; Kanemitsu Yoshihiko | Zendy; Saeki Akinori | Zendy; Murata Yasujiro | Zendy; Murdey Richard | Zendy; Wakamiya Atsushi | Zendy

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Lead‐Free Solar Cells based on Tin Halide Perovskite Films with High Coverage and Improved Aggregation

Author(s) -

Liu Jiewei,

Ozaki Masashi,

Yakumaru Shinya,

Handa Taketo,

Nishikubo Ryosuke,

Kanemitsu Yoshihiko,

Saeki Akinori,

Murata Yasujiro,

Murdey Richard,

Wakamiya Atsushi

Publication year - 2018

Publication title -

angewandte chemie international edition

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.831

H-Index - 550

eISSN - 1521-3773

pISSN - 1433-7851

DOI - 10.1002/anie.201808385

Subject(s) - materials science , tin , perovskite (structure) , halide , crystallite , energy conversion efficiency , fabrication , solar cell , annealing (glass) , photovoltaic system , perovskite solar cell , optoelectronics , tin dioxide , nanotechnology , chemical engineering , inorganic chemistry , chemistry , metallurgy , electrical engineering , medicine , alternative medicine , pathology , engineering

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 %.

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