Patent ID: 11862407
Assignee: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Field: Surface technology, coating (Chemistry)
Classification: CPC H  C  Y | IPC C  H

Claim 0:
1. A method for preparing a perovskite film, including steps of
(1) providing a target material comprising following elements: lead, a halogen, and one or more alkali metals;
(2) sputtering using the target material in step (1) with a process gas, where the process gas is a noble gas so as to obtain a film;
(3) subjecting the film obtained in step (2) to a chemical bath treatment using a chemical bath, wherein the chemical bath is a solution of AX, A is selected from one or more of formamidine or methylamine, and X is a halogen; and
(4) sputtering on the film obtained in step (3) using a tin metal with another process gas, where the another process gas comprises a noble gas so as to obtain the perovskite film.