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Photoluminescence Quenching in Self‐Assembled CsPbBr 3 Quantum Dots on Few‐Layer Black Phosphorus Sheets
Author(s) -
Muduli Subas,
Pandey Padmini,
Devatha Gayathri,
Babar Rohit,
M Thripuranthaka,
Kothari Dushyant C.,
Kabir Mukul,
Pillai Pramod P.,
Ogale Satishchandra
Publication year - 2018
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201712608
Subject(s) - photoluminescence , quantum dot , black phosphorus , quenching (fluorescence) , photoconductivity , materials science , layer (electronics) , fluorescence , phosphorus , luminescence , chemical physics , analytical chemistry (journal) , photochemistry , optoelectronics , molecular physics , chemistry , nanotechnology , optics , physics , organic chemistry , metallurgy
An ordered self‐assembly of CsPbBr 3 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.