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Photoluminescence properties of an efficient colour tunable microcrystalline Sr3WO6:Na+,RE3+ (RE = Eu, Dy and Sm) phosphors

K. V. DABRE1,* , A. S. NAKHATE1

Affiliation

  1. Department of Physics, Taywade College, Koradi, Dist. Nagpur-441111, India

Abstract

The microcrystalline samples of double perovskite tungstate Sr3WO6:Na+,RE3+ (Eu, Dy and Sm) phosphor were synthesized by modified solid state reaction method. The XRD and SEM results reveal the formation of phase pure microcrystalline phosphor samples. Noteworthy appearance of characteristic broad CT band of (WO6)6- complex is observed in excitation spectra of Dy3+ and Sm3+ ion doped phosphors. PL emission spectra of Eu3+, Dy3+ and Sm3+ ions doped phosphors show characteristic emission of rare earth activator. The rare earth ions are doped at non-centrosymmetric ‘A’ site of the double perovskite tungstate and show no concentration quenching up to 2mol% concentration of rare earth ions..

Keywords

Double Perovskite Tungstate, Sr3WO6, Phosphors, Photoluminescence, Rare earth.

Submitted at: July 2, 2020
Accepted at: Aug. 16, 2021

Citation

K. V. DABRE, A. S. NAKHATE, Photoluminescence properties of an efficient colour tunable microcrystalline Sr3WO6:Na+,RE3+ (RE = Eu, Dy and Sm) phosphors, Journal of Optoelectronics and Advanced Materials Vol. 23, Iss. 7-8, pp. 353-358 (2021)