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Title: Up-conversion luminescent properties of La{sub (0.80−x)}VO{sub 4}:Yb{sub x}, Er{sub 0.20} phosphors

Highlights: • A novel green and red emitting LaVO{sub 4}:Yb{sub x}{sup 3+}, Er{sub 0.20}{sup 3+} phosphors were synthesized. • Their structures, luminescent properties have also been investigated. • Major laser transition for Er{sup 3+} ion is {sup 2}H{sub 11/2} → {sup 4}I{sub 15/2} (525 nm). • These results suggest the possibility as photonic devices. - Abstract: Yb{sup 3+}, Er{sup 3+} co-doped LaVO{sub 4} phosphors were synthesized by solid state reaction method. Yb{sup 3+} concentrations were changed from 0.01 to 0.20 mol for the fixed Er{sup 3+} concentration at 0.2 mol. The crystalline structure of samples was investigated by X-ray diffraction (XRD). The composition was investigated by X-ray photoelectron spectroscopy (XPS) analysis. The surface morphology was observed by scanning electron microscope (SEM). The red and green up-conversion emissions were observed in Yb{sup 3+}, Er{sup 3+} co-doped LaVO{sub 4} phosphors under the excitation of 980 nm laser diode. Several emissions in green and red regions of the spectrum were observed near 525 nm, 553 nm and 659 nm radiated by {sup 2}H{sub 11/2} → {sup 4}I{sub 15/2}, {sup 4}S{sub 3/2} → {sup 4}I{sub 15/2}, and {sup 4}F{sub 3/2} → {sup 4}I{sub 15/2} transitions, respectively.
Authors:
;  [1] ;  [1] ;  [2] ;  [3]
  1. Department of Materials Science and Engineering, Silla University, Busan 617-736 (Korea, Republic of)
  2. Department of Physics, Changwon National University, Changwon 641-773 (Korea, Republic of)
  3. Department of Physics, Pukyong National University, Busan 608-737 (Korea, Republic of)
Publication Date:
OSTI Identifier:
22475985
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 71; 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:
36 MATERIALS SCIENCE; CONVERSION; CRYSTAL STRUCTURE; DOPED MATERIALS; ERBIUM ADDITIONS; EXCITATION; LASER RADIATION; LUMINESCENCE; OPTICAL PROPERTIES; PHOSPHORS; SCANNING ELECTRON MICROSCOPY; SURFACE PROPERTIES; SURFACES; SYNTHESIS; VANADATES; X-RAY DIFFRACTION; X-RAY PHOTOELECTRON SPECTROSCOPY; YTTERBIUM ADDITIONS