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Preparation, Design, and Characterization of the Novel Long Persistent Phosphors: Na 2 ZnGeO 4 and Na 2 ZnGeO 4 :Mn 2+
Author(s) -
Jin Yahong,
Hu Yihua,
Fu Yinrong,
Ju Guifang,
Mu Zhongfei,
Chen Ren,
Lin Jun,
Wang Zhonghua
Publication year - 2015
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.13503
Subject(s) - phosphor , crystal structure , luminescence , ion , doping , energy transfer , analytical chemistry (journal) , materials science , chemistry , mineralogy , crystallography , optoelectronics , organic chemistry , chromatography , molecular physics
A novel blue‐emitting phosphor Na 2 ZnGeO 4 and a novel green‐emitting phosphor Na 2 ZnGeO 4 :Mn 2+ have been newly developed via high‐temperature solid‐state reaction. The crystal structure of Na 2 ZnGeO 4 has been identified. Energy transfer from Na 2 ZnGeO 4 host to Mn 2+ ions was affirmed. Undoped and Mn 2+ ‐doped Na 2 ZnGeO 4 phosphors exhibit blue and green long persistent luminescence ( LPL ) with persistent duration more than 40 min and 4 h, respectively. The traps created in host lattice were clarified. The LPL mechanism in Na 2 ZnGeO 4 and Na 2 ZnGeO 4: Mn 2+ was discussed briefly. This investigation provides two new and efficient long persistent phosphors ( LPP s).
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