CsCl Modified Ge–Ga–S Glasses Codoped with Eu2+ and Mn2+: A Potential Yellow Phosphor for Solid‐State Lighting

Authors: Yan, Qiqi; Ren, Jing; Chen, Guorong; Heo, J.

Source: Journal of the American Ceramic Society, Volume 95, Number 12, 1 December 2012 , pp. 3719-3721(3)

Publisher: Wiley-Blackwell

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Abstract:

Notably enhanced Mn2+ yellow emission is observed in CsCl modified and Eu2+/Mn2+ codoped GeGaS glasses under near‐ultraviolet (NUV) excitation. The plausible efficiency of energy transfer (ET) from Eu2+ to Mn2+ is as high as 91%, which is obtained by measurement of luminescence decay of Eu2+ in samples doped with and without Mn2+. The Eu2+/Mn2+ codoping significantly increases the excitation cross section at the NUV region, which is at heart of the enhanced Mn2+ yellow emission. The ET processes responsible for the enhanced luminescence are discussed.

Document Type: Research Article

DOI: http://dx.doi.org/10.1111/jace.12031

Publication date: December 1, 2012

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