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Updated: Mar 15, 2026

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Published on: September 13, 2024
Synthesis and thermoluminescence of LaAlO3:Pr3+ to UVC radiation dosimetry
A Morales-Hernández1, J Zarate-Medina1, M E Contreras-García1
1Instituto de Investigación en Metalurgia y Materiales de la Universidad Michoacana de San Nicolás de Hidalgo, Edif. "U", C.U. 58060 Morelia, Michoacán, Mexico.
Abstract:
Thermoluminescent (TL) response of trivalent praseodymium ion doped lanthanum aluminate (LaAlO3:Pr3+) obtained by Pechini method and Spray Dryer was studied. TL response of LaAlO3:Pr3+ powders submitted at 1600°C exhibited one peak centered at 157°C. Sensitivity of LaAlO3:Pr3+ was improved in around 90 times compared with undoped LaAlO3. TL response as a function of wavelength showed a maximum in 230nm. Dosimetric characteristics of LaAlO3:Pr3+ under UVR radiation effects were analyzed. Evaluation of activation energy was obtained by Glow Fit v.1.3 software. Experimental results about thermoluminescent characteristics of LaAlO3:Pr3+ suggest as good candidate to be employed as a complementary thermoluminescent device with other TL phosphors as aluminum oxide.

