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Opt Express. 2008 Feb 18;16(4):2508-13.

Energy transfer between Cr3+ and Ni2+ in transparent silicate glass ceramics containing Cr3+/Ni2+ co-doped ZnAl2O4 nanocrystals.

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1
Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China.

Abstract

The emission intensity of Ni(2+) at 1200 nm in transparent ZnO-Al(2)O(3)-SiO2 glass ceramics containing ZnAl(2)O(4) nanocrystals is improved approximately 8 times by Cr(3+) codoping with 532 nm excitation. This enhanced emission could be attributed to an efficient energy transfer from Cr(3+) to Ni(2+), which is confirmed by time-resolved emission spectra. The energy transfer efficiency is estimated to be 57% and the energy transfer mechanism is also discussed.

PMID:
18542330
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