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Recent Research Progress of Long-wavelength Emitting Long-persistent Luminescence Materials

Published online by Cambridge University Press:  20 March 2014

Wei Zeng ,
Yuhua Wang ,
Yanqin Li  and
Xuhui Xu
Wei Zeng
Affiliation:
Department of Materials Science, School of Physical Science and Technology, Lanzhou University, 730000, PR China.
Yuhua Wang*
Affiliation:
Department of Materials Science, School of Physical Science and Technology, Lanzhou University, 730000, PR China.
Yanqin Li
Affiliation:
Department of Materials Science, School of Physical Science and Technology, Lanzhou University, 730000, PR China.
Xuhui Xu
Affiliation:
Department of Materials Science, School of Physical Science and Technology, Lanzhou University, 730000, PR China.
*
*Email: wyh@lzu.edu.cn
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Abstract

Blue and Green long-persistent luminescence materials have been fully developed, and are well featured in production and application. However, long-wavelength emitting materials are very rare relatively. This paper presents some work from our laboratory on the recent progress in long-wavelength emitting long-persistent luminescence materials: Sr3Al2O5Cl2: Eu2+, Tm3+, Sr2SnO4: Sm3+ and Ca2BO3Cl: Eu2+, Dy3+. The initial intensity of Sr3Al2O5Cl2: Eu2+, Tm3+ can reach nearly 5000 mcd/m2 and its afterglow can last about 220 min at recognizable intensity level. Sr2SnO4: Sm3+ has a red emission and its afterglow time of which sintered in vacuum atmosphere increased substantially. With optimum doping concentration and sufficient excitation with UV light, the yellow afterglow of Ca2BO3Cl: Eu2+, Dy3+ can persist over 48 h.

Keywords

compoundluminescencepowder
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1592: Symposium I – Rare Earth Doped Advanced Materials for Photonic Applications , 2014 , jsapmrs13-1592-6466
Copyright
Copyright © Materials Research Society 2014 

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