期刊
CHEMICAL PHYSICS LETTERS
卷 699, 期 -, 页码 223-228出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cplett.2018.03.069
关键词
Phosphorene quantum dots; Liquid phase exfoliation; Blue photoluminescence; Photoluminescence quenching
资金
- DST Nano Mission
- JNCASR
- DST, Govt. of India
Phosphorene, a two-dimensional material, has been a subject of recent investigations. In the present study, we have prepared blue fluorescent phosphorene quantum dots (PQDs) by liquid phase exfoliation of black phosphorus in two non-polar solvents, toluene and mesitylene. The average particle sizes of PQDs decrease from 5.0 to 1.0 nm on increasing the sonicator power from 150 to 225 W. The photoluminescence spectrum of the PQDs is red-shifted in the 395-470 nm range on increasing the excitation-wavelength from 300 to 480 nm. Electron donor and acceptor molecules quench the photoluminescence, with the acceptors showing more marked effects. (C) 2018 Elsevier B.V. All rights reserved.
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