Skip to Content
Find More Like This
Return to Search

CRYSTALLINE PEROVSKITE THIN FILMS AND DEVICES THAT INCLUDE THE FILMS

United States Patent Application

20180006254
A1
View the Complete Application at the US Patent & Trademark Office
Los Alamos National Laboratory - Visit the Technology Transfer Division Website
Hybrid organic-inorganic perovskite thin films with average grain sizes of at least 50 micrometers were prepared and employed in solar cells. The PCE values of the solar cells did not degrade with the direction or the scan-rate of the applied voltage. The larger average grain sizes are believed to assist in reducing the influence of defect states on carrier recombination. The tunability of PCE with substrate temperature may be correlated to the quality of the crystalline perovskite formed using the hot-casting procedure. The larger average grain sizes lead to good crystalline quality, low defect density, and high carrier mobility. The process for growing hybrid organic-inorganic perovskites may be applicable to the preparation of other materials to overcome problems related to polydispersity, defect formation, and grain boundary recombination.
Mohite, Aditya (Los Alamos, NM), Gupta, Gautam (Los Alamos, NM), Wang, Hsing-Lin (Los Alamos, NM), Nie, Wanyi (Los Alamos, NM)
15/ 539,422
December 23, 2015
STATEMENT REGARDING GOVERNMENT RIGHTS [0002] The United States government has rights in this invention pursuant to Contract No. DE-AC52-06NA25396 between the United States Department of Energy and Los Alamos National Security, LLC for the operation of Los Alamos National Laboratory.