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Vol. 29 No. 8 (2017): Vol 29 Issue 8

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Photoluminescence Studies of ZnWO4:Sm3+ Synthesized by Ethylene Glycol Route

https://doi.org/10.14233/ajchem.2017.20760
N. Premjit Singh
Department of Chemistry, Mizoram University, Aizawl-796 004, India; Department of Chemistry, A.R.S.D. College, University of Delhi, Dhaula Kuan, New Delhi-110 021, India
N. Rajmuhon Singh
Department of Chemistry, Manipur University, Canchipur-795 003, India
N. Mohondas Singh
Department of Chemistry, Mizoram University, Aizawl-796 004, India

Corresponding Author(s) : N. Mohondas Singh

nmdas08@rediffmail.com

Asian Journal of Chemistry, Vol. 29 No. 8 (2017): Vol 29 Issue 8

Abstract

A series of crystalline ZnWO4 doped Sm3+ with different concentrations of dopant ion were successfully prepared by the co-precipitation method using ethylene glycol followed by annealing of the precipitates formed. The prepared sample was crystallized in monoclinic structure with spherical morphology and crystallite sizes extend in the ranges from 10-20 nm. Photoluminescence analysis of the samples showed that there exist strong absorption band with maximum around 275 nm and broad emission band due to WO66- group with maximum around 456 nm along with weakly intense peaks characteristics to the f-f transitions of Sm3+ ion at 569, 612 and 653 nm. The optimum concentration of Sm3+ ion in ZnWO4 lattice is obtained at 3 at. % and beyond this, the emission intensity originated from Sm3+ ion decreases due to concentration quenching.

Keywords

ZnWO4:Sm3 Photoluminescence Concentration effect
Singh, N. P., Singh, N. R., & Singh, N. M. (2017). Photoluminescence Studies of ZnWO4:Sm3+ Synthesized by Ethylene Glycol Route. Asian Journal of Chemistry, 29(8), 1866–1870. https://doi.org/10.14233/ajchem.2017.20760
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