Opto-impedance characteristics of europium doped strontium aluminate and strontium chloro-apatite phosphors: a comparison

被引：1

作者：

Syed, K. A. Z. ^{[1
]}

Kaleeswari, P. ^{[1
]}

Thirumalai, J. ^{[1
]}

Manoharan, S. P. ^{[1
]}

Raj, A. Sundara ^{[1
]}

Jagannathan, R. ^{[1
]}

机构：

[1] Cent Electrochem Res Inst, Karaikkudi 630006, Tamil Nadu, India

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2008年 / 41卷 / 17期

关键词：

D O I：

10.1088/0022-3727/41/17/175412

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Opto-impedance characteristics of the long persistent strontium aluminate : Eu2+ phosphor system have been compared with fluorescent strontium chloro-apatite : Eu2+ phosphor. This study has shown that optical pumping on the long persistent phosphor sample leads to a type of charge build-up and subsequent dispersion through a diffusion process occurring on a slow time scale (similar to s) centring on the Dy3+ ion in agreement with a three-level scheme based on Dy3+ related hole-trapping-detrapping mechanism.

引用

页数：6

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