Optical properties

Cold blue phosphors based on dysprosium-doped aluminum oxide

I. V. Baklanova, V. N. Krasil'nikov, A. P. Tyutyunnik, Ya. V. Baklanova

Institute of Solid State Chemistry, Urals Branch of the Russian Academy of Sciences, Yekaterinburg, Russia

Abstract: Al$_2$О$_3$ : Dy$^{3+}$ oxides with different color luminescence were synthesized using precursor technology. The phase composition and crystal structure of the obtained materials were established by X-ray powder diffraction analysis. The excitation and emission spectra, decay curves, thermal quenching of luminescence were studied. Under UV-excitation, the phosphors exhibit blue, purplish blue, and white emission depending on the dysprosium concentration and the annealing temperature of the Al$_{1-x}$Dy$_x$(OH)(HCOO)$_2$ precursor in air.

Keywords: aluminum oxide, dysprosium, precursor synthesis method, luminescence, color coordinates.

Received: 30.08.2021
Revised: 30.08.2021
Accepted: 03.09.2021

DOI: 10.21883/FTT.2022.01.51837.196

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