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Local structure and photoluminescent characteristics of Eu3+ in ZnO–SiO2 glasses

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Abstract

The photoluminescence properties of xZnO–(100−x)SiO2 (x = 0, 5, 10, 20) containing 1% Eu2O3 prepared by a sol–gel method were systematically investigated. The results indicated that the relative proportion of f–f transitions to charge transfer (CT) absorption decreased with the increase of ZnO concentration. The intensity of 5D0–7FJ transitions of Eu3+ ions was enhanced with the increase of ZnO content due to local structure changes and decreased quantities of Eu3+ ions clusters. The results of fluorescence line narrow (FLN) spectra indicated that Eu3+ ions occupied one site in SiO2 glass and two sites in ZnO–SiO2 glasses. The second-order crystal field parameters were calculated. B20 and B22 for site 1 increased with excitation energy, while ones hardly changed for site 2.

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Acknowledgements

Authors gratefully thank the financial supports from the NITECH 21st Century COE Program for Environment-Friendly Ceramics.

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  1. Department of Materials Science and Engineering, Nagoya Institute of Technology, Showa Nagoya, 466-8555, Japan

    Lixin Yu & Masayuki Nogami

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  1. Lixin Yu
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  2. Masayuki Nogami
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Correspondence to Masayuki Nogami.

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Yu, L., Nogami, M. Local structure and photoluminescent characteristics of Eu3+ in ZnO–SiO2 glasses. J Sol-Gel Sci Technol 43, 355–360 (2007). https://doi.org/10.1007/s10971-007-1581-3

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