Open AccessEnergy transfer between Cr^3+ and Ni^2+ in transparent silicate glass ceramics containing Cr^3+/Ni^2+ co-doped ZnAl_2O_4 nanocrystals
Author(s) -
Botao Wu,
Shifeng Zhou,
Jian Ruan,
Yanbo Qiao,
Danping Chen,
Congshan Zhu,
Jianrong Qiu
Publication year - 2008
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.002508
Subject(s) - materials science , energy transfer , nanocrystal , doping , emission intensity , silicate , analytical chemistry (journal) , ceramic , excitation , emission spectrum , silicate glass , spectral line , optics , optoelectronics , chemical engineering , nanotechnology , metallurgy , composite material , molecular physics , chemistry , physics , electrical engineering , chromatography , astronomy , engineering
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.