Broadly tunable emission from Mn-doped zinc gallogermanate phosphors through composition modification

Nowadays, one-phase and full-color phosphors have gained increasing interest. Here, we show that Mn-activated zinc gallogermanate, Zn sub(1+x)Ga sub(2-2x)Ge sub(x)O sub(4): Mn, x = 0 ~1, phosphors exhibit a broadly tunable luminescence from green to deep red with the substitution of Ga super(3+) by...

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Bibliographic Details
Published in:Optical materials express 2014-11, Vol.4 (11), p.2433-2440
Main Authors: Xu, Xiaoqing, Ren, Jing, Huang, Nan, Zeng, Huidan, Chen, Guorong, Kong, Deshuang, Gu, Changjun, Chen, Chunming, Liu, Zhibin, Kong, Linren, Tao, Haizheng
Format: Article
Language:English
Subjects:
Displays
Emission
Field emission
Luminescence
Manganese
Origins
Phosphors
Zinc
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Summary:Nowadays, one-phase and full-color phosphors have gained increasing interest. Here, we show that Mn-activated zinc gallogermanate, Zn sub(1+x)Ga sub(2-2x)Ge sub(x)O sub(4): Mn, x = 0 ~1, phosphors exhibit a broadly tunable luminescence from green to deep red with the substitution of Ga super(3+) by Ge super(4+). The green and deep red emissions are attributed to Mn super(2+) and Mn super(4+) occupying the tetrahedrally coordinated Zn super(2+) and octahedrally coordinated Ga super(3+) sites, respectively. The origin of the tunable luminescence is discussed. The present phosphors have potential uses in field emission displays and in vivo bio-imaging.
ISSN:2159-3930
2159-3930
DOI:10.1364/OME.4.002433