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

Subas Muduli; Padmini Pandey; Gayathri Devatha; Rohit Babar; Thripuranthaka M; Dushyant C Kothari; Mukul Kabir; Pramod P Pillai; Satishchandra Ogale

doi:10.1002/anie.201712608

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

Angew Chem Int Ed Engl. 2018 Jun 25;57(26):7682-7686. doi: 10.1002/anie.201712608. Epub 2018 May 28.

Authors

Subas Muduli¹, Padmini Pandey², Gayathri Devatha³, Rohit Babar¹, Thripuranthaka M¹, Dushyant C Kothari², Mukul Kabir¹, Pramod P Pillai³, Satishchandra Ogale¹

Affiliations

¹ Department of Physics and Centre for Energy Science, Indian Institute of Science Education and Research (IISER), Pune, Dr. Homi Bhabha Road, Pune, 411008, India.
² National Centre of Nanosciences and Nanotechnology, University of Mumbai, Kalina campus, Vidyanagari, Santacruz (E), Mumbai, 400098, India.
³ Department of Chemistry and Centre for Energy Science, Indian Institute of Science Education and Research (IISER), Pune, Dr. Homi Bhabha Road, Pune, 411008, India.

PMID: 29693308
DOI: 10.1002/anie.201712608

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.

Keywords: electronic structure; layered compounds; phosphorus; photoluminescence; quantum dots.

Publication types

Research Support, Non-U.S. Gov't