Temperature Features of Photoluminescence Decay in Amorphous Hafnia Nanotubes
Shilov A.O. Savchenko S.S. Zhusupov K. Vokhmintsev A.S. Weinstein I.A.
December 2024Pleiades Publishing
Bulletin of the Russian Academy of Sciences: Physics
2024#88Issue Suppl 2S174 - S179 pp.
Abstract: Nanotubular HfO2 arrays hold significant promise for advanced optoelectronic and nanoelectronic applications. However, the optical properties of nominally pure hafnia with optically active centers of intrinsic origin are far from being sufficiently investigated. In this work we have conducted research on the wide-range temperature effects in the photoluminescence (PL) kinetics of anion-defective hafnia nanotubes with an amorphous structure, synthesized by the electrochemical oxidation method. The experimental data obtained for the temperature effect on PL decay are quantitatively analyzed by calculating the appropriate energy of the activation barrier. The results obtained provide the deeper understanding of luminescent mechanisms in hafnia nanotubes and insights into the potential of HfO2-based nanostructures for advanced thermo-optical applications.
activation energy , Hafnia nanotubes , non-stoichiometric hafnium dioxide , oxygen vacancy , PL decay kinetics , thermally stimulated processes
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NANOTECH Centre, Ural Federal University, Yekaterinburg, 620002, Russian Federation
Rudny Industrial University, Rudny, 111500, Kazakhstan
Institute of Metallurgy, Ural Branch, Russian Academy of Sciences, Yekaterinburg, 620108, Russian Federation
NANOTECH Centre
Rudny Industrial University
Institute of Metallurgy
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