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Title: Tailoring growth conditions for efficient tuning of band edge of CdS nanoparticles

CdS nanoparticles are successively synthesized by chemical precipitation method. The samples prepared at different reaction time and temperature are characterized by X-ray diffraction, Diffuse reflectance spectroscopy, Photoluminescence spectroscopy ans Energy dispersive x-ray analysis. Visible color variation is noted from light yellow to orange, indicates the quantum confinement effect and the results are again got confirmed from the optical studies. A shift in absorption peak is observed towards the lower region of the visible spectra - the “blue shift”- upon decrease in reaction time and temperature. Blue emission observed in the photoluminescence spectrum confirms the grain size induced confinement.
Authors:
;  [1] ; ;  [2]
  1. Department of Physics, Central university of Kerala, Kasaragod, Kerala (India)
  2. Department of Physics, Cochin University of Science & Technology, Cochin, Kerala (India)
Publication Date:
OSTI Identifier:
22490299
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1665; Journal Issue: 1; Conference: 59. DAE solid state physics symposium 2014, Tamilnadu (India), 16-20 Dec 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 77 NANOSCIENCE AND NANOTECHNOLOGY; ABSORPTION SPECTROSCOPY; CADMIUM SULFIDES; COLOR; ELECTRONIC STRUCTURE; EMISSION SPECTROSCOPY; GRAIN SIZE; NANOPARTICLES; PHOTOLUMINESCENCE; PRECIPITATION; VARIATIONS; VISIBLE RADIATION; VISIBLE SPECTRA; X-RAY DIFFRACTION; X-RAY SPECTROSCOPY