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Title: Crystal structure, electronic structure, and photoluminescent properties of SrMoO{sub 4}:Tb{sup 3+} phosphors

Highlights: • SrMoO{sub 4}:Tb{sup 3+} phosphor samples were synthesized at different temperatures. • The crystal and electronic structures, and luminescence properties were studied. • The excitation peak shifts to red with increasing the sintering temperature. • The luminescence mechanism of SrMoO{sub 4}:Tb{sup 3+} was suggested. - Abstract: The experimental and theoretical studies of the optical properties of SrMoO{sub 4}:Tb{sup 3+} phosphors were carried out. The structural, optical, and electronical properties of the phosphors were systematically studied. The phosphor samples were crystallized at different temperatures via a sol–gel method. Excitation spectra of SrMoO{sub 4}:Tb{sup 3+} powder samples exhibited gradual red shift and luminescent intensity changed with increasing the sintering temperature. Such spectral changes depend strongly on the crystallographic properties such as lattice parameters and crystallinity. The shift of the excitation spectra is mainly ascribed to the covalent bond interaction between Mo−O bonds. An energy band model was demonstrated to describe the luminescence mechanism in the material.
Authors:
;  [1] ;  [1] ;  [2] ;  [3]
  1. Department of Physics, Pukyong National University, Busan 608-737 (Korea, Republic of)
  2. Korea Basic Science Institute, Busan Center, Busan 618-230 (Korea, Republic of)
  3. Department of Physics, Dongeui University, Busan 614-714 (Korea, Republic of)
Publication Date:
OSTI Identifier:
22475925
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 70; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CRYSTAL STRUCTURE; CRYSTALLOGRAPHY; CRYSTALS; ELECTRONIC STRUCTURE; EXCITATION; INTERACTIONS; LATTICE PARAMETERS; MOLYBDATES; OPTICAL PROPERTIES; PHOSPHORS; PHOTOLUMINESCENCE; RED SHIFT; SINTERING; SPECTRA; STRONTIUM COMPOUNDS; TERBIUM ADDITIONS; X-RAY DIFFRACTION