Abstract
In this paper, we report on the multicolor luminescence in oxygen-deficient Tb3+-doped calcium aluminogermanate glasses. A simple method was proposed to control oxygen-deficient defects in glasses by adding metal Al instead of the corresponding oxide (Al2O3), resulting in efficient blue and red emissions from Tb3+-undoped glasses with 300 and 380 nm excitation wavelengths, respectively. Moreover, in Tb3+-doped oxygen-deficient glasses, bright three-color (sky-blue, green or yellow, and red) luminescence was observed with 300, 380, and 395 nm excitation wavelengths, respectively. These glasses are useful for the fabrication of white light-emitting diode (LED) lighting.
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Acknowledgments
We appreciate the helpful suggestions from Dr. G. Lakshiminarayana of Zhejiang University. This work was financially supported by National High Technology Program of China (2006AA03Z304) and National Basic Research Program of China (2006CB806000b). This work was also supported by Program for Changjiang Scholars and Innovative Research Team in University.
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Lin, G., Zhu, B., Zhou, S. et al. Multicolor luminescence in oxygen-deficient Tb3+-doped calcium aluminogermanate glasses. Journal of Materials Research 23, 1890–1894 (2008). https://doi.org/10.1557/JMR.2008.0249
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DOI: https://doi.org/10.1557/JMR.2008.0249