Structure, long persistent luminescent properties and mechanism of a novel efficient red emitting Ca2Ga2GeO7:Pr3+ phosphor
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- 作者：Zehua Zou ; Cheng Cao ; Teng Zhang ; Lin Feng ; Jiachi Zhang ; zhangjch@lzu.edu.cn" class="auth_mail" title="E-mail the corresponding author ; Zhipeng Ci ; cizhp@lzu.edu.cn" class="auth_mail" title="E-mail the corresponding author ; Zhiya Zhang ; Yuhua Wang
- 关键词：Long persistent luminescence ; Phosphor ; Ca2Ga2GeO7 ; Pr3+
- 刊名：Journal of Alloys and Compounds
- 出版年：2016
- 出版时间：25 September 2016
- 年：2016
- 卷：680
- 期：Complete
- 页码：397-405
- 全文大小：2710 K
文摘
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A novel red long persistent luminescent Ca2Ga2GeO7:Pr3+ phosphor is developed.
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Pr3+ replaces disordered Ca2+ sites, leading to efficient persistent luminescence.
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Persistent luminescence is visible for 5 h by dark-adapted vision in dark.
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Important roles of retrapping and tunneling on decay behaviors are revealed.
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Threshold depth is firstly defined for evaluation of retrapping and tunneling.