Photoluminescence Quenching in Self‐Assembled CsPbBr₃ Quantum Dots on Few‐Layer Black Phosphorus Sheets

Abstract

An ordered self-assembly of CsPbBr₃ quantum dots (QDs) was generated on the surface of few-layer black phosphorus (FLBP). Strong quenching of the QD fluorescence was observed, and analyzed by time-resolved photoluminescence (TR-PL) studies, DFT calculations, and photoconductivity measurements. Charge transfer by type I band alignment is suggested to be the cause of the observed effects.