Journal
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
Volume 63, Issue 11, Pages 2047-2051Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0022-3697(02)00192-0
Keywords
non-crystalline materials; nanostructures; metals; sol-gel growth; crystal fields
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NiS nanocrystallites embedded in silica xerogel have been prepared using a sol-gel processing. UV-vis spectra, transmission electron micrograph, excitation spectra and photoluminescence (PL) spectra of the samples have all been investigated. The PL spectrum of NiS nanoparticles embedded in sol-gel silica xerogel consists of two emission peaks, one at 440 nm (lambda(ex) = 380 nm) and the other at 610 nm (lambda(ex) = 490 nm). The latter has been assigned to the NiS nanoparticles in sol-gel silica xerogel. (C) 2002 Published by Elsevier Science Ltd.
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