Photoluminescence and thermoluminescence characteristics of KXSO4Cl : Eu (X = Zn or Mg) halosulfate phosphor

Polycrystalline KZnSO4Cl : Eu and KMgSO4Cl : Eu prepared by a wet chemical method have been studied for their thermoluminescence (TL) and photoluminescence (PL) characteristics. The PL emission spectra of the phosphor suggests the presence of Eu2+ and Eu3+ in the host compound occupying two differen...

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Veröffentlicht in:	Journal of physics. D, Applied physics Applied physics, 2007-10, Vol.40 (19), p.6039-6043
Hauptverfasser:	Dhoble, S J, Gedam, S C, Nagpure, I M, Godbole, S V, Bhide, M K
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation Other luminescence and radiative recombination Other solid inorganic materials Photoluminescence Physics Thermoluminescence
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Zusammenfassung:	Polycrystalline KZnSO4Cl : Eu and KMgSO4Cl : Eu prepared by a wet chemical method have been studied for their thermoluminescence (TL) and photoluminescence (PL) characteristics. The PL emission spectra of the phosphor suggests the presence of Eu2+ and Eu3+ in the host compound occupying two different lattice sites. The TL glow curve of the KZnSO4Cl : Eu compounds has a simple structure with prominent peaks at 200 and 290 deg C, while KMgSO4Cl : Eu peaks at 165 and 265 deg C. The TL sensitivity of the phosphors is compared with CaSO4 : Dy and is found to be 3.4 and 2.4 times less in KZnSO4Cl : Eu and KMgSO4Cl : Eu phosphors, respectively.
ISSN:	0022-3727 1361-6463
DOI:	10.1088/0022-3727/40/19/040