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Number of results

Journal

2012 | 10 | 4 | 995-1001

Article title

Recombination luminescence of CaSO4:Tb3+ and CaSO4:Gd3+phosphors

Content

Title variants

Languages of publication

EN

Abstracts

EN
A comparative study of the excitation of luminescence by VUV radiation as well as of thermally and photostimulated luminescence has been carried out for CaSO4:Tb3+ and CaSO4:Gd3+ phosphors, where Na+ or F− ions are used for charge compensation. The distinction in hole processes for the phosphors with Na+ or F− compensators is determined by the differing thermal stability of the holes localized at/near Tb3+Na+ and Gd3+Na+ (up to 100–160 K) or at/near Tb3+F−
V
Ca and Gd3+F−
V
Ca centers involving also a cation vacancy (up to 400–550 K). Tunnel luminescence in the pairs of localized electrons and holes nearby Tb3+ or Gd3+ has been detected. The mechanisms of electron-hole, hole-electron and tunnel recombination luminescence as well as a subsequent released energy transfer to RE3+ ions are considered.

Publisher

Journal

Year

Volume

10

Issue

4

Pages

995-1001

Physical description

Dates

published
1 - 8 - 2012
online
17 - 7 - 2012

Contributors

  • Institute of Physics, University of Tartu, Riia 142, 51014, Tartu, Estonia
  • Institute of Physics, University of Tartu, Riia 142, 51014, Tartu, Estonia
author
  • Institute of Physics, University of Tartu, Riia 142, 51014, Tartu, Estonia
  • L.N. Gumilyov Eurasian National University, Munaitpasov 5, 0100008, Astana, Kazakhstan
  • L.N. Gumilyov Eurasian National University, Munaitpasov 5, 0100008, Astana, Kazakhstan
  • L.N. Gumilyov Eurasian National University, Munaitpasov 5, 0100008, Astana, Kazakhstan

References

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Document Type

Publication order reference

Identifiers

YADDA identifier

bwmeta1.element.-psjd-doi-10_2478_s11534-011-0091-7
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