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Synthesis and luminescent properties of a novel bluish-white afterglow phosphor, b-Zn3(PO4)2:Hf4+

✍ Scribed by Zifei Peng; Zhu Xu; Caiqin Luo; Junbao Yu; Guobin Zhang

Publisher: John Wiley and Sons
Year: 2008
Tongue: English
Weight: 166 KB
Volume: 23
Category: Article
ISSN: 1522-7235
DOI: 10.1002/bio.1009

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✦ Synopsis

Abstract

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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