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Multicolor luminescence in oxygen-deficient Tb3+-doped calcium aluminogermanate glasses

Published online by Cambridge University Press:  31 January 2011

Geng Lin ,
Bin Zhu ,
Shifeng Zhou ,
Hucheng Yang  and
Jianrong Qiu
Geng Lin
Affiliation:
State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, People’s Republic of China
Bin Zhu
Affiliation:
State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, People’s Republic of China
Shifeng Zhou
Affiliation:
State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, People’s Republic of China
Hucheng Yang
Affiliation:
State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, People’s Republic of China
Jianrong Qiu*
Affiliation:
State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, People’s Republic of China
*
a)Address all correspondence to this author. e-mail: qjr@zju.edu.cn Present address: State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, People’s Republic of China
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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.

Keywords

Optical propertiesPhotoemissionTb
Type
Articles
Information
Journal of Materials Research , Volume 23 , Issue 7 , July 2008 , pp. 1890 - 1894
Copyright
Copyright © Materials Research Society 2008

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References

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