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Synthesis and luminescent properties of a novel bluish‐white afterglow phosphor, b ‐Zn 3 (PO 4 ) 2 :Hf 4+
Author(s) -
Peng Zifei,
Xu Zhu,
Luo Caiqin,
Yu Junbao,
Zhang Guobin
Publication year - 2008
Publication title -
luminescence
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 45
eISSN - 1522-7243
pISSN - 1522-7235
DOI - 10.1002/bio.1009
Subject(s) - phosphorescence , afterglow , phosphor , photoluminescence , luminescence , excited state , persistent luminescence , materials science , doping , wavelength , analytical chemistry (journal) , photochemistry , optoelectronics , optics , chemistry , fluorescence , physics , atomic physics , thermoluminescence , gamma ray burst , chromatography , astronomy
A new bluish‐white long‐lasting phosphorescent material, Hf 4+ ‐doped b‐Zn 3 (PO 4 ) 2 , was prepared by the conventional high‐temperature solid‐state method. The photoluminescence (PL) spectrum reveals that it exhibits a strong blue emission band centred at 470 nm, with asymmetry on the long wavelength side; this material emits bluish‐white light and shows strong afterglow phosphorescence after it is excited with a 254 nm UV lamp. The phosphorescence lasts nearly 40 min in the light perception of the dark‐adapted human eye (0.32 mcd/m 2 ). The possible phosphorescence mechanism is also analysed. Copyright © 2008 John Wiley & Sons, Ltd.
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