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Vol. 35 No. 12 (2023): Vol 35 Issue 12, 2023

Copyright (c) 2023 Naorem Premananda Singh Singh, W. Rameshwor Singh, N. Rajmuhon Singh

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Synthesis and Characterization of White Light Emission of Dy3+ Doped Gd2O3 Phosphors

https://doi.org/10.14233/ajchem.2023.30683
Naorem Premananda Singh
Department of Chemistry, Manipur University, Canchipur-795003, Imphal, India
https://orcid.org/0009-0009-8158-7491
W. Rameshwor Singh
Department of Chemistry, Manipur University, Canchipur-795003, Imphal, India
https://orcid.org/0000-0002-2507-4079
N. Rajmuhon Singh
Department of Chemistry, Manipur University, Canchipur-795003, Imphal, India
https://orcid.org/0000-0003-2375-2056

Corresponding Author(s) : Naorem Premananda Singh

npremananda@manipuruniv.ac.in

Asian Journal of Chemistry, Vol. 35 No. 12 (2023): Vol 35 Issue 12, 2023

Abstract

Dy3+ ion doped Gd2O3 phosphors with varying concentrations were synthesized successfully by hydrothermal process. The XRD patterns and TEM images of prepared samples were well-studied. Upon the emission at λem = 573 nm, the excitation spectra consist of several peaks which denote the characteristic lines of the 4f-4f or 4f-5d intra-configurational transition of Gd3+ and Dy3+ ions. In the emission spectrum obtained by excitations at 234 nm and 273 nm, consist of two characteristic band obtained at 485 and 573 nm, which are attributed to 4F9/2→6H15/2 (blue) and 4F9/2→6H13/2 (yellow) transitions of Dy3+ ion, repectively. The photoluminescence lifetime are found to be at around 0.599-1.200 ms. The CIE Chromaticity coordinates showed the prepared samples could be used as a white light emitting phosphor applied in near UV region. 

Keywords

White light emission Dy3+, Phosphors Gd2O3
Singh, N. P., Singh, W. R., & Singh, N. R. (2023). Synthesis and Characterization of White Light Emission of Dy3+ Doped Gd2O3 Phosphors. Asian Journal of Chemistry, 35(12), 3061–3065. https://doi.org/10.14233/ajchem.2023.30683
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