Effect of Doping Mode on the Photoluminescence Property of CaS:Eu Phosphor

Abstract:

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Eu-doped CaS phosphors were prepared from sulfurization of CaCO3 in H2S gas without flux. The doping of Eu activator was conducted in two different modes: synchronous doping during sulfurization of CaCO3 and subsequent doping by vacuumly calcinning pure CaS and Eu2O3. Comparison of the as-prepared samples indicated that subsequent doping led to larger optimum Eu concentration and lower red emission intensity than synchronous doping. The different luminescence properties are ascribed to the different activator distributions in CaS host induced by different doping modes, and the uniform distribution resulted from synchronous doping is beneficial to the luminescence of the phosphor.

Info:

Periodical:

Key Engineering Materials (Volumes 368-372)

Edited by:

Wei Pan and Jianghong Gong

Pages:

315-318

DOI:

10.4028/www.scientific.net/KEM.368-372.315

Citation:

Y. J. Xia et al., "Effect of Doping Mode on the Photoluminescence Property of CaS:Eu Phosphor", Key Engineering Materials, Vols. 368-372, pp. 315-318, 2008

Online since:

February 2008

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Price:

$35.00

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