Spectroscopic properties of HoAl3(BO3)4 single crystal |
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| Affiliation: | 1. Siberian Federal University, Krasnoyarsk, Russia;2. L.V. Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, 660036 Krasnoyarsk, Russia;1. Institute of Solid State Physics, University of Latvia, Riga, Latvia;2. Institute of Inorganic Chemistry, Riga Technical University, Latvia;3. Procédés, Matériaux et Energie Solaire CNRS, France;1. School of Physics and Materials Science, Anhui University, Hefei 230601, PR China;2. Department of Physics and Electronic Engineering, Hefei Normal University, Hefei 230061, PR China;1. School of Chemistry and Chemical Engineering, Guangzhou University, China;2. Guangzhou Key Laboratory for Environmentally Functional Materials and Technology, China;3. School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou 510006, China;1. Photochemistry Center, Russian Academy of Sciences, 7a, bld.1, Novatorov Street, 119421 Moscow, Russian Federation;2. Central Science Research Institute of Technology “Technomash”, 4 Ivana Franko Street, Moscow 121108, Russian Federation;3. N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47, Leninsky Avenue, 119991 Moscow, Russian Federation |
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| Abstract: | The Judd–Ofelt theory has been applied to analyze absorption spectra of Ho3+ ion in HoAl3(BO3)4 measured in spectral range 300–700 nm at room temperature. The Judd–Ofelt spectroscopic parameters have been determined as: Ω2 = 18.87 × 10?20 cm2, Ω4 = 17.04 × 10?20 cm2, Ω6 = 9.21 × 10?20 cm2. These parameters have been used to calculate radiative lifetimes and branching ratios of the luminescence manifolds. Three luminescent bands were found in the spectral range 450–700 nm ascribed to transitions from the 5F5, (5F4, 5S2) and 3K8 states to the ground state 5I8. Experimental intensities of these luminescence transitions were compared with those calculated by using Judd–Ofelt theory and the system of kinetic equations for populations of starting luminescing states. Probabilities of radiativeless transitions were evaluated from this comparison. |
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| Keywords: | Absorption Luminescence Holmium Huntite Judd–Ofelt |
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