Method for preparing perovskite film
AssigneeNational Tsing Hua University
InventorsTZU-CHIEN WEI, SHAFNA KUNNATHUM PEEDIKA, VIDYA KATTOOR
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Abstract
A method for preparing a perovskite film includes: providing a single-crystal perovskite material, which is an organo-lead halide single-crystal perovskite; performing a film-forming operation, in which the single-crystal perovskite material is used to form a perovskite film on the surface of a substrate, and the perovskite film has a rough surface with a first surface roughness not less than 30 nm; and performing a surface planarization operation to transform the rough surface of the perovskite film into a smooth surface, in which the smooth surface has a second surface roughness not greater than 12 nm. The method of the present disclosure is suitable for preparing large-area perovskite films.
Claims10
A method for preparing a perovskite film, comprising:
- providing a single-crystal perovskite material that is an organo-lead halide single-crystal perovskite;
- performing a film formation operation that includes using the single-crystal perovskite material to form a perovskite film on a surface of a substrate;
- wherein the perovskite film has a rough surface with a first surface roughness of not less than 30 nm;
- and
- performing a surface planarization operation to transform the rough surface of the perovskite film into a smooth surface;
- wherein the smooth surface has a second surface roughness of not greater than 12 nm.
Dependencies are inferred from the claim text.