George, Achamma and Sharma, Suchinder K. and Chawla, Santa and Malik, M. M. and Qureshi, M. S. (2011) Detailed of X-ray diffraction and photoluminescence studies of Ce doped ZnO nanocrystals. Journal of Alloys and Compounds, 509 (20). pp. 5942-5946. ISSN 0925-8388

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Abstract

Pristine and Ce doped ZnO nanopowders were synthesized by simple refluxing technique. A detailed X-ray diffraction analysis was carried out to evaluate the contribution of dopant ion concentration on strain and lattice parameters. A particle size of 20 nm was obtained via TEM studies. Spherical morphology was obtained for Ce doped ZnO nanocrystals. Multiple emission bands were observed for pristine and doped ZnO samples where, 401 nm emission band corresponds to a contribution due to free excitons recombination through an exciton–exciton collisions. With the Ce addition, the surface defects increases and the emission intensity decreases.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s Elsevier B.V.
Uncontrolled Keywords:	Lanthanide; Photoluminescence; Lattice parameters; Excitons; ZnO
Subjects:	Chemistry Materials Science Metallurgy & Metallurgical Engineering
Divisions:	UNSPECIFIED
Depositing User:	Mr. Abhishek Yadav
Date Deposited:	26 Nov 2012 09:42
Last Modified:	26 Nov 2012 09:42
URI:	http://npl.csircentral.net/id/eprint/843

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