Thermoluminescence and optically stimulated luminescence properties of beta-irradiated TiO2:Yb nanoparticles.
The thermoluminescence (TL) and optically stimulated luminescenece (OSL) response of TiO2:Yb nanoparticles are studied. After beta irradiation, the materials developed a significant TL/OSL signal associated to several localized trapping states around 360-620 K. The OSL signal is mainly due to the releasing of trapped charges in the low temperature (360 and 460 K) trapping states. A computer glow curve deconvolution procedure was used to determine the activation energies and kinetic order of the TL processes.
Posgrado en Ingeniería y Ciencias Aplicadas, UAEM-CIICAP Cuernavaca, Morelos, México.
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Chernov
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Meléndrez
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Barboza-Flores