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Author Biswas, Pankaj ♦ Kumar, Vinay ♦ Ntwaeaborwa, O. M. ♦ Swart, H. C.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY ♦ CALCIUM COMPOUNDS ♦ DOPED MATERIALS ♦ FOURIER TRANSFORMATION ♦ GRAIN SIZE ♦ INFRARED SPECTRA ♦ LIGHT EMITTING DIODES ♦ ORTHORHOMBIC LATTICES ♦ PHOSPHORS ♦ PHOTOLUMINESCENCE ♦ POWDERS ♦ SAMARIUM ADDITIONS ♦ SODIUM COMPOUNDS ♦ SOLIDS ♦ SPACE GROUPS ♦ ULTRAVIOLET RADIATION ♦ VANADATES ♦ X-RAY DIFFRACTION
Abstract The samarium doped NaCaVO{sub 4} phosphor was synthesized by the combustion method. The X-ray powder diffraction (XRD) analysis confirmed that the phosphor powder crystallized as orthorhombic structure belonging to space group Cmcm. From Williamson-Hall analysis the grain size and microstrain in the powder was estimated. The Fourier- transform infrared (FT-IR) studies further validated the formation of vanadate phase of the phosphor. Photoluminescence (PL) study revealed that the phosphor could be efficiently excited by UV-VIS from 200 nm to 500 nm. The 565 nm, 602 nm, 648 nm and 713 nm emissions were ascribed to {sup 4}G{sub 5/2} to {sup 6}H{sub J} (J = 5/2, 7/2, 9/2 and 11/2) transitions of the Sm{sup 3+} ion. The present material may be explored as a novel phosphor to be excited by UV light emitting diodes (LEDs) chips for solid-state lighting and display applications.
ISSN 0094243X
Educational Use Research
Learning Resource Type Article
Publisher Date 2016-05-06
Publisher Place United States
Volume Number 1728
Issue Number 1


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