Characterization of CdS nanoparticles during their growth in paraffin hot-matrix
- Laboratory of Nanoparticle Science and Technology, Department of General and Inorganic Chemistry, Faculty of Chemistry, University of Sofia, 1164 Sofia (Bulgaria)
- Advanced Research Center, Nihon l'Oreal R and D Center, 3-2-1 Sakado, Takatsu-ku, Kawasaki, Kanagawa 213-0012 (Japan)
This paper describes the optical and structural properties of CdS nanoparticles during their growth in paraffin hot-matrix containing stearic acid ligand. The nanocrystalline species are characterized with absorbance and photoluminescence spectroscopy, fluorescence microscopy, High-Resolution Transmission Electron Microscopy and X-ray diffraction. The nanoparticles size-distribution, Stokes shift and mean molar concentration are derived from the optical spectra as functions of time. Their time evolution confirms a two-stage nanocrystal growth for CdS. The stability of aggregates of stearate-coated nanoparticles, tested against UV-illumination, shows that the band-edge emission is more sensitive to photo bleaching than the trap-state emission. The obtained new quantitative results are important for the large-scale manufacturing of CdS nanoparticles and their practical applications.
- OSTI ID:
- 21003539
- Journal Information:
- Materials Characterization, Vol. 58, Issue 3; Other Information: DOI: 10.1016/j.matchar.2006.05.010; PII: S1044-5803(06)00127-6; Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 1044-5803
- Country of Publication:
- United States
- Language:
- English
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