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Title: Spectral tunability of cerium photoluminescence in nano sized LaF{sub 3}:Ce{sup 3+}

Nano sized LaF{sub 3}:Ce{sup 3+} was synthesized by adopting co-precipitation technique with nominal composition as well as with different molar ratio of reactants La{sup 3+} (Lanthanum) and F{sup −} (Fluoride). All the samples were subjected to X-ray diffraction (XRD), XRF, UV-Vis absorption, and PL characterizations. XRD analysis did not reveal any significant change in the diffraction profile. Particle size variations were observed with respect to change in lanthanum to fluoride molar ratio. An interesting and intense photoluminescence excitation peaks were observed for the samples prepared non-stoichiometrically. The effect of varying nominal reactant composition demonstrates a possibility of introducing tunability in cerium emission in the same host. Life time of cerium has been measured to be in the order of nano seconds.
Authors:
; ; ;  [1] ;  [2]
  1. Indira Gandhi Centre for Atomic Research, Kalpakkam – 603 102 (India)
  2. CCCM, Bhabha Atomic Research Centre, Hyderabad (India)
Publication Date:
OSTI Identifier:
22490232
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1665; Journal Issue: 1; Conference: 59. DAE solid state physics symposium 2014, Tamilnadu (India), 16-20 Dec 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABSORPTION SPECTROSCOPY; CERIUM; CERIUM IONS; COPRECIPITATION; EMISSION SPECTROSCOPY; EXCITATION; LANTHANUM; LANTHANUM FLUORIDES; LANTHANUM IONS; NANOSTRUCTURES; PARTICLE SIZE; PHOTOLUMINESCENCE; X-RAY DIFFRACTION; X-RAY FLUORESCENCE ANALYSIS