Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials. Founded at 2009

Yb3-xErхAl5O12 for optical thermometry: measurement of luminescence caused by transitions from non-thermal coupled levels

I.V. Baklanova, V.N. Krasil’nikov, Y.V. Baklanova

Institute of Solid State Chemistry Ural Branch of the RAS

DOI: 10.26456/pcascnn/2025.17.015

Original article

Abstract: Erbium-doped ytterbium aluminum garnet has been synthesized by a precursor method. The samples were characterized by Infrared spectroscopy and scanning electron microscopy. Under infrared excitation at 980 nm, the compounds exhibit intense upconversion red luminescence in the visible range. According to the concentration dependences of upconversion luminescence, the optimal concentration of erbium in Yb3-xErхAl5O12 compounds was x=0,3. The thermoluminescent characteristics for Yb2,7Er0,3Al5O12 garnet were determined by the ratio of band intensities in the visible and near-infrared ranges due to transitions from non-thermal coupled energy levels 4F9/2 and 4I9/2 of Er3+ ion. The maximum values of absolute and relative sensitivity in the temperature interval of 25-225°C have been determined. The results obtained show that it is reasonable to use the method of comparing two luminescent lines assigned to non-thermal coupled energy levels of lanthanide ions for optical thermometry and that phosphors based on Yb3-xErхAl5O12 garnet hold promise as materials for temperature sensors.

Keywords: ytterbium aluminum garnet, erbium, precursor synthesis, luminescence, upconversion

  • Inna V. Baklanova – Ph. D., Senior Researcher, Laboratory of quantum chemistry and spectroscopy after professor A.L. Ivanovsky, Institute of Solid State Chemistry Ural Branch of the RAS
  • Vladimir N. Krasil’nikov – Dr. Sc., Principal Researcher, Laboratory of inorganic synthesis, Institute of Solid State Chemistry Ural Branch of the RAS
  • Yana V. Baklanova – Ph. D., Senior Researcher, Laboratory of quantum chemistry and spectroscopy after professor A.L. Ivanovsky, Institute of Solid State Chemistry Ural Branch of the RAS

For citation:

Baklanova I.V., Krasil’nikov V.N., Baklanova Y.V. Yb3-xErkhAl5O12 dlya opticheskoj termometrii: izmerenie lyuminestsentsii, vyzvannoj perekhodami s temperaturno-nesvyazannykh urovnej [Yb3-xErхAl5O12 for optical thermometry: measurement of luminescence caused by transitions from non-thermal coupled levels], Fiziko-khimicheskie aspekty izucheniya klasterov, nanostruktur i nanomaterialov [Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials], 2025, issue 17, pp. 015-025. DOI: 10.26456/pcascnn/2025.17.015. ⎘

Full article (in Russian): download PDF file

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