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

Journal Article · Wed Jun 24 00:00:00 EDT 2015 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4917769· OSTI ID:22490299

Susha, N.; Aravind, P. B.; Anantharaman, M. R. ^[1]

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1. Department of Physics, Cochin University of Science & Technology, Cochin, Kerala (India)

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.

• OSTI ID: 22490299
• Journal Information: AIP Conference Proceedings, Vol. 1665, 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); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

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