Journal
SUPERLATTICES AND MICROSTRUCTURES
Volume 88, Issue -, Pages 662-667Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.spmi.2015.10.029
Keywords
ZnS; Absorption coefficient; Quantum dots
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Funding
- UniMAP [9007-00111, 9007-00185]
- U.G.C., New Delhi, India [42-856/2013(SR)]
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ZnS quantum dots were synthesized using sulfur source of sodium sulphide and mercaptoethanol via chemical bath deposition technique. The synthesized ZnS QDs were analyzed and characterized by X-ray diffraction (XRD), Transmission Electron Microscopy (TEM) and UV-visible (UV-vis) spectrophotometry. The average particle size goes down to 1.9 nm as capping agent concentration increases and corresponding absorption coefficient peak goes down to 265 nm. The blue shift within absorption-wavelength was elaborated. The refractive index and optical dielectric constant are calculated. A correlation between energy gap and absorption coefficient aside and particle size another side is discussed. (C) 2015 Elsevier Ltd. All rights reserved.
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