Phase stabilization and optical response in the ultraviolet range, due to terbium concentration in hafnium oxide nanoparticles

E Montes; J C Guzmán-Olguín; C Falcony Guajardo; J Guzmán Mendoza

doi:10.1016/j.apradiso.2023.110963

Phase stabilization and optical response in the ultraviolet range, due to terbium concentration in hafnium oxide nanoparticles

Appl Radiat Isot. 2023 Oct:200:110963. doi: 10.1016/j.apradiso.2023.110963. Epub 2023 Jul 29.

Authors

E Montes¹, J C Guzmán-Olguín², C Falcony Guajardo³, J Guzmán Mendoza⁴

Affiliations

¹ Universidad de Guanajuato, Campus León, División de Ciencias e Ingenierías, Loma del Bosque 103, Colonia Lomas del Campestre, 37150, León, Gto, Mexico.
² Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada del Instituto Politécnico Nacional, Calzada Legaria 694, Col. Irrigación, Alcaldía Miguel Hidalgo, 04510, Cd. de México, Mexico.
³ Departamento de Física, CINVESTAV del Instituto Politécnico Nacional, Apartado Postal 14-740, 07000, Cd. de México, Mexico.
⁴ Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada del Instituto Politécnico Nacional, Calzada Legaria 694, Col. Irrigación, Alcaldía Miguel Hidalgo, 04510, Cd. de México, Mexico. Electronic address: joguzman@ipn.mx.

PMID: 37549614
DOI: 10.1016/j.apradiso.2023.110963

Abstract

This work reports the influence of terbium trivalent ions on growing kinetics and the phase in hafnium oxide nanoparticles, as well as response to radiation in the range from 256 to 286. The nanoparticles were obtained by the hydrothermal route maintaining the temperature constant and varying the reaction time and the terbium concentration. The results show a gradual change in the phase with the concentration of terbium trivalent ions, going from the monoclinic phase, present at low concentrations, to the tetragonal phase, which appears from dopant concentrations greater than 5% at., increasing in amount with concentration of dopant. These phases appear as two perfectly defined morphologies. Furthermore, there is a significant change in radiative lifetimes when the tetragonal phase appears.

Keywords: Hafnium oxide; Hydrothermal synthesis; Photoluminescence; m-HfO(2); t-HfO(2).