Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/66065
Title: Selenium quantum dots : Preparation, structure, and properties
Authors: Qian, F
Li, X
Tang, L
Lai, SK
Lu, C
Lau, SP
Issue Date: 2017
Publisher: American Institute of Physics
Source: Applied physics letters, 2017, v. 110, no. 5, 53104 How to cite?
Journal: Applied physics letters 
Abstract: An interesting class of low-dimensional nanomaterials, namely, selenium quantum dots (SeQDs), which are composed of nano-sized selenium particles, is reported in this study. The SeQDs possess a hexagonal crystal structure. They can be synthesized in large quantity by ultrasound liquid-phase exfoliation using NbSe2 powders as the source material and N-Methyl-2-pyrrolidone (NMP) as the dispersant. During sonication, the Nb-Se bonds dissociate; the SeQDs are formed, while niobium is separated by centrifugation. The SeQDs have a narrow diameter distribution from 1.9 to 4.6 nm and can be dispersed with high stability in NMP without the need for passivating agents. They exhibit photoluminescence properties that are expected to find useful applications in bioimaging, optoelectronics, as well as nanocomposites.
URI: http://hdl.handle.net/10397/66065
ISSN: 0003-6951
EISSN: 1077-3118
DOI: 10.1063/1.4975358
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