A CTAB-mediated antisolvent vapor route to shale-like Cs₄PbBr₆ microplates showing an eminent photoluminescence.

ABSTRACT: Compared with nanoscale quantum dots (QDs), the large-sized perovskite crystals not only possess better stability but also are convenient for application exploration. Herein, we develop a facile and efficient antisolvent vapor-assisted recrystallization approach for the synthesis of large-sized Cs₄PbBr₆ perovskite crystal microplates. In this method, for the first time, the shale-like Cs₄PbBr₆ microplates with lateral dimensions of hundreds of microns are fabricated by employing cetyltriethylammnonium bromide (CTAB) as a morphology-directing agent. FESEM, TEM, and AFM characterizations indicate that the as-obtained shale-like Cs₄PbBr₆ microplates are actually formed by 6-8 nm thick Cs₄PbBr₆ nanosheets w

SUBMITTER: Wei Y 

PROVIDER: S-EPMC9050374 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature