Effect of Antisolvent Application Volume on CH3NH3PbI3 Films

초록

Antisolvent treatment methods used to manufacture high-quality perovskite films using solution processes vary in terms of the type of antisolvent and processing condition employed. We analyzed the structural dependences of a perovskite film in terms of the applied volume of ethyl acetate as an antisolvent and the optical properties resulting therefrom. The application of an excessive volume of the antisolvent caused excessive pinholes in the entire area of the perovskite film. In addition, the pinholes were found to hinder the transport of charge carriers.

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