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Effect of Dy3+ on the thermoluminescence emission of potassium tetraborate

S. JIPA1,2,* , T. ZAHARESCU1, W. KAPPEL1, L. M. GORGHIU3, C. DUMITRESCU3

Affiliation

  1. INCDIE, ICPE CA, 313 Splaiul Unirii, Bucharest 030138, Romania
  2. “Valachia” University of Târgovişte, 8-22 Unirii Av., Târgovişte 130082, Romania
  3. “Valachia” University of Târgovişte, 18-22 Unirii Av., Târgovişte 130082, Romania

Abstract

The general glow curve of the crystalline thermoluminescent materials exhibits one or more peaks when the charge carriers are released. The thermoluminescence glow curve provides information about the kinetic parameters, such as activation energy, order of kinetics and frequency factor. The main purpose of this thermoluminescence study is to investigate the trapping centers responsible for the thermoluminescence emission obtained for potassium tetraborate undoped and doped with Dy2O3 (3 moles%) samples. On the base of these curves the kinetic parameters were calculated using some of the methods described in the literature. In addition, a comparison of the results obtained by applying these methods for K2B4O7 doped with Dy2O3 samples is presented..

Keywords

Thermoluminescence, Kinetic parameters, Potassium tetraborate, Dysprosium activator.

Submitted at: April 15, 2008
Accepted at: June 9, 2008

Citation

S. JIPA, T. ZAHARESCU, W. KAPPEL, L. M. GORGHIU, C. DUMITRESCU, Effect of Dy3+ on the thermoluminescence emission of potassium tetraborate, Journal of Optoelectronics and Advanced Materials Vol. 10, Iss. 6, pp. 1340-1344 (2008)