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Effects of scandium substitution on the crystal structure and luminescence properties of LuBO_3: Ce^(3+)

Wu, Yuntao and Ren, Guohao and Ding, Dongzhou and Pan, Shangke and Yang, Fan (2012) Effects of scandium substitution on the crystal structure and luminescence properties of LuBO_3: Ce^(3+). Journal of Solid State Chemistry, 194 . pp. 151-156. ISSN 0022-4596. doi:10.1016/j.jssc.2012.05.001.

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The calcite phase of LuBO_3 and ScBO_3 polycrystalline powders were synthesized by solid state reaction method, and the Lu_(1−x)Sc_xBO_3:Ce (x=0.2, 0.5, 0.7) single crystals were grown by the Czochralski method. A large composition deviation between the initial polycrystalline powders and final single crystal was confirmed by electron probe micro-analysis. Raman spectroscopy revealed that moderate lattice disorder was induced by scandium substitution. However, based on the single crystal X-ray study, we finally concluded that the crystal structure of lutetium scandium orthoborate still crystallized in the rhombohedral system belonging to R3^- c. Furthermore, the relationship between the energies of the five 5d levels of Ce^(3+) and the crystalline environment was revealed. The total redshift, total crystal field splitting, and centroid shift of Lu_(1−x)Sc_xBO_3:Ce^(3+) were calculated based on their VUV excitation spectra. The variations trend of these observed spectroscopic parameters was in accordance with the predicted ones.

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Additional Information:© 2012 Elsevier Inc. Received 22 December 2011. Received in revised form 2 May 2012. Accepted 6 May 2012. Available online 16 May 2012. The authors thank beamline BS-U10B of National Synchrotron Radiation Laboratory of China for providing the beam time. The authors also are grateful to Prof. Hexiong Yang of University of Arizona for the help on the measurements of Single-crystal X-ray diffraction and Raman spectroscopy. This work is supported by the National Natural Science Foundation of China (Grant No. 50902145).
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National Natural Science Foundation of China50902145
Subject Keywords:Lutetium scandium orthoborate; Crystal structure; Structure refinement; Luminescence properties
Record Number:CaltechAUTHORS:20121101-111739624
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Official Citation:Yuntao Wu, Guohao Ren, Dongzhou Ding, Shangke Pan, Fan Yang, Effects of scandium substitution on the crystal structure and luminescence properties of LuBO3: Ce3+, Journal of Solid State Chemistry, Volume 194, October 2012, Pages 151-156, ISSN 0022-4596, 10.1016/j.jssc.2012.05.001. (
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:35243
Deposited By: Ruth Sustaita
Deposited On:02 Nov 2012 14:34
Last Modified:09 Nov 2021 23:13

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