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Materials 2013, 6(8), 3663-3675; doi:10.3390/ma6083663

Broadband Luminescence in Rare Earth Doped Sr2SiS4: Relating Energy Levels of Ce3+ and Eu2+

1
LumiLab, Department of Solid State Sciences, Ghent University, Krijgslaan 281/S1, Ghent 9000, Belgium
2
Center for Nano and Biophotonics (NB Photonics), Ghent University, Ghent 9000, Belgium
*
Author to whom correspondence should be addressed.
Received: 17 May 2013 / Revised: 17 July 2013 / Accepted: 13 August 2013 / Published: 21 August 2013
(This article belongs to the Special Issue Luminescent Materials 2013)
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Abstract

Sr2SiS4:Ce3+ is an efficient blue-emitting (460 nm) phosphor, excitable with light of wavelengths up to 420 nm. From the excitation spectrum, we construct the energy level scheme and use it to check the predictive power of the Dorenbos model, relating the positions of the Ce3+ energy levels with those of Eu2+ in the same host. For strontium thiosilicate, this method gives excellent results and allows us to determine which of two available crystallographic sites is occupied by cerium. We use the Dorenbos method for extracting information on the coordination of Ce3+ from the observed crystal field splitting.
Keywords: cerium; luminescence; thiosilicate; phosphor; Dorenbos; sulfide; europium; XRD cerium; luminescence; thiosilicate; phosphor; Dorenbos; sulfide; europium; XRD
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Parmentier, A.B.; Smet, P.F.; Poelman, D. Broadband Luminescence in Rare Earth Doped Sr2SiS4: Relating Energy Levels of Ce3+ and Eu2+. Materials 2013, 6, 3663-3675.

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