Title : ( Synthesis, characterization, and measurement of structural, optical, and phtotoluminescent properties of zinc sulfide quantum dots )
Authors: Elaheh Kafshdare Goharshadi , roya mehrkhah , Paul Nancarrow ,
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Abstract
A facile and rapid microwave irradiation method was developed to prepare ZnS nano-particles (NPs) using a set of ionic liquids (ILs) based on the bis(trifluoromethylsulfonyl) imide anion and different cations of 1-alkyl-3-methyl-imidazolium. The phases, structures, and optical absorption properties of the NPs were determined in depth with X-ray powder diffraction (XRD), transmission electron microscopy (TEM), Raman spectroscopy, UV–vis absorption spectroscopy (UV–vis), diffuse reflectance spectroscopy (DRS), and photolumi-nescence spectroscopy (PL). The average crystallite size of the ZnS NPs calculated from the XRD pattern was of the order of 2.8 nm which exhibits cubic zinc blende structure. The energy band gap measurements of NPs were carried out by UV and DRS. The results revealed that the ZnS NPs exhibit strong quantum confinement effect. The optical band gap energy increases significantly compared with those of the bulk ZnS. The refractive indices for different ZnS nanosamples and different concentrations of ZnS NPs for a typical sample suspended in deionized water were also measured. &
Keywords
Zinc sulfide Nanoparticle Semiconductor compounds Photoluminescence
@article{paperid:1033804,
author = {Kafshdare Goharshadi, Elaheh and Mehrkhah, Roya and Paul Nancarrow},
title = {Synthesis, characterization, and measurement of structural, optical, and phtotoluminescent properties of zinc sulfide quantum dots},
journal = {Materials Science in Semiconductor Processing},
year = {2013},
volume = {16},
number = {2},
month = {April},
issn = {1369-8001},
pages = {356--362},
numpages = {6},
keywords = {Zinc sulfide
Nanoparticle
Semiconductor compounds
Photoluminescence},
}
%0 Journal Article
%T Synthesis, characterization, and measurement of structural, optical, and phtotoluminescent properties of zinc sulfide quantum dots
%A Kafshdare Goharshadi, Elaheh
%A Mehrkhah, Roya
%A Paul Nancarrow
%J Materials Science in Semiconductor Processing
%@ 1369-8001
%D 2013
