A novel orange-red emitting NaCaVO4:Sm3+ phosphor for solid state lighting

Pankaj Biswas, Vinay Kumar, O. M. Ntwaeaborwa, H. C. Swart

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

6 Citations (Scopus)

Abstract

The samarium doped NaCaVO4 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 200nm to 500nm. The 565nm, 602nm, 648nm and 713nm emissions were ascribed to 4G5/2 to 6HJ (J = 5/2, 7/2, 9/2 and 11/2) transitions of the Sm3+ 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.

Original languageEnglish
Title of host publicationInternational Conference on Condensed Matter and Applied Physics, ICC 2015
Subtitle of host publicationProceeding of International Conference on Condensed Matter and Applied Physics
EditorsManoj Singh Shekhawat, Sudhir Bhardwaj, Bhuvneshwer Suthar
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735413757
DOIs
Publication statusPublished - 6 May 2016
Externally publishedYes
EventInternational Conference on Condensed Matter and Applied Physics, ICC 2015 - Bikaner, India
Duration: 30 Oct 201531 Oct 2015

Publication series

NameAIP Conference Proceedings
Volume1728
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

ConferenceInternational Conference on Condensed Matter and Applied Physics, ICC 2015
Country/TerritoryIndia
CityBikaner
Period30/10/1531/10/15

Keywords

  • Combustion Method
  • Photoluminescence.
  • Vanadates
  • X-ray diffraction

ASJC Scopus subject areas

  • General Physics and Astronomy

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