Syed, K.A.Z. and Kaleeswari, P. and Thirumalai, J. and Manoharan, SP. and Sundara Raj, A. and Jagannathan, R. (2008) Opto-impedance characteristics of europium doped strontium aluminate and strontium chloro-apatite phosphors: a comparison. Journal of Physics D: Applied Physics, 41 (17). ISSN 0022-3727

PDF Restricted to Registered users only Download (311Kb) | Request a copy

Abstract

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 (∼s) centring on the Dy3+ ion in agreement with a three-level scheme based on Dy3+ related hole-trapping–detrapping mechanism.

Item Type:	Article
Subjects:	Electrochemical Materials Science
Divisions:	UNSPECIFIED
Depositing User:	ttbdu cecri
Date Deposited:	28 Feb 2012 16:36
Last Modified:	19 Oct 2012 10:51
URI:	http://cecri.csircentral.net/id/eprint/366

Actions (login required)

View Item