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Characterization and growth of CdS nanoparticles by a cost effective chemical reduction method
Author(s) -
Bhattacharya R.,
Manna A.,
Das T. K.,
Saha S.
Publication year - 2010
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.201000053
Subject(s) - photoluminescence , band gap , nanoparticle , characterization (materials science) , materials science , diffraction , absorption (acoustics) , particle size , chemical engineering , analytical chemistry (journal) , nanotechnology , chemistry , optoelectronics , optics , chromatography , composite material , physics , engineering
A simple chemical reduction method is followed to grow CdS nanoparticles at room temperature with different duration of time. The grown samples are ultrasonicated in ethanol. The dispersed samples are characterized using electron diffraction techniques. Simultaneously optical absorption, photoluminescence and longtime photorelaxation of these samples are studied at room temperature. An increase in band gap is observed in each case as compared to bulk CdS. Also particle size increases with increase of growth time and hence there is decrease of band gap with increase of growth duration. Simultaneously long time relaxation increases with increase of growth time. An attempt is made to correlate the structural, optical, electrical and opto‐electrical properties. (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)