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Photoluminescence Studies of Bluish-White Emission from Dy3+-Activated Li2CaSiO4 Phosphor
Abstract
Dy3+-doped Li2CaSiO4 phosphors were prepared by high temperature solid-state reaction. Structural studies were carried out using X-ray diffraction technique. Scanning electron microscopy was used to get information about the morphology of the prepared samples. Also, photoluminescence analysis of the phosphor samples for different concentrations of the doping ion with variable excitations was presented. When doped with Dy3+, Li2CaSiO4 emits intense emission bands at 485 and 576 nm (excited at 353 nm). Our study shows that the as-prepared phosphor may be useful in white light-emitting diodes as a bluish component. The corresponding transitions of the doping ion and concentration quenching effect were studied in detail. The CIE 1931 (x, y) chromaticity coordinates (x = 0.24 and y = 0.31) show the distribution of the spectral region calculated from photoluminescence emission spectra.
About the Authors
M. P. D. Parimala
Krishna University
India
India
Department of Physics
Machilipatnam
M. C. Rao
Krishna University;
Andhra Loyola College
India
India
Department of Physics
Machilipatnam; Vijayawada
Vikas Dubey
Bhilai Institute of Technology Raipur
India
India
Department of Physics
New Raipur, Chhattisgarh
K. V. R. Murthy
M. S. University of Baroda
India
India
Department of Applied Physics, Faculty of Engineering and Technology
Vadodara
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Review
For citations:
Parimala M.P., Rao M.C., Dubey V., Murthy K.V. Photoluminescence Studies of Bluish-White Emission from Dy3+-Activated Li2CaSiO4 Phosphor. Zhurnal Prikladnoii Spektroskopii. 2023;90(2):351-1 - 351-5.
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