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Luminescence properties of Lu3M5O12:Eu3+ (M = Al, Ga) and effects of Bi3+ co-dopant

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Abstract

The Eu3+-doped and Eu3+, Bi3+ co-doped Lu3M5O12 (LuMG where M = Al, Ga) phosphors are synthesized by spray pyrolysis, and the crystal structure, micromorphology, luminescence properties and effects of Bi3+ co-dopant are investigated. X-ray diffraction reveals that the crystal structures of the matrices do not change after partial replacement of Lu3+ by Eu3+ and Bi3+. The phosphors exhibit the same spherical micromorphology without agglomeration and particle size distribution with a typical diameter of about 0.7 μm. The emission and excitation spectra show transitions associated with the Eu3+ 4f configurations. 7F1 energy level splitting of Eu3+ in Lu3Al5O12:Eu and stronger luminescence of Lu3Ga5O12:Eu are observed, and the quenching concentrations of Eu3+ in Lu3Al5O12:Eu and Lu3Ga5O12:Eu are 6 and 10 mol% with respect to Lu3+, respectively. Introduction of Bi3+ enhances the emission of Eu3+ accompanied by the transition emission of Bi3+.

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Acknowledgments

The work was financially supported by the Natural Science Fund Project in Jiangsu Province of China (BK2012869) as well as Guangdong—Hong Kong Technology Cooperation Funding Scheme (TCFS) GHP/015/12SZ.

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Authors and Affiliations

  1. Department of Microelectronics, Nanjing College of Information Technology, Nanjing, 210046, China

    Xian-zhong Zhu

  2. School of Materials Science and Engineering, Southeast University, Nanjing, 211189, China

    Cheng-lin Chu

  3. Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China

    Paul K. Chu

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  1. Xian-zhong Zhu
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  2. Cheng-lin Chu
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  3. Paul K. Chu
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Correspondence to Xian-zhong Zhu.

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Zhu, Xz., Chu, Cl. & Chu, P.K. Luminescence properties of Lu3M5O12:Eu3+ (M = Al, Ga) and effects of Bi3+ co-dopant. J Sol-Gel Sci Technol 76, 43–49 (2015). https://doi.org/10.1007/s10971-015-3748-7

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  • DOI: https://doi.org/10.1007/s10971-015-3748-7

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