Hole Transport Layer Free Perovskite Light-Emitting Diodes With High-Brightness and Air-Stability Based on Solution-Processed CsPbBr₃-Cs₄PbBr₆ Composites Films.

ABSTRACT: Recently, perovskite light-emitting diodes (PeLEDs) have drew widespread attention due to their high efficiencies. However, because of the sensitivity to moisture and oxygen, perovskite luminescent layers are usually prepared in high-purity nitrogen environment, which increases the cost and process complexity of device preparation and seriously hindrances its commercialization of PeLED in lighting and display application. Herein, dual-phase all-inorganic composite CsPbBr₃-Cs₄PbBr₆ films are fabricated from CsBr-rich perovskite solutions by a simple one-step spin-coating method in the air with high humidity. Compared with the pure CsPbBr₃ film, the composite CsPbBr₃-Cs₄PbBr₆ film has much stronger photoluminescence

SUBMITTER: Yuan F 

PROVIDER: S-EPMC8814343 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature