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爱与雨下: 金币+1 2013-12-28 11:13:29
sunjian490: 金币+10, 翻译EPI+1 2013-12-30 08:36:35
Discussions of  excitation spectra and fluorescence lifetime spectra of the Co-doped samples and  single-doped samples by  comparison  show that the electronic Tb3 + ions on the 5D4 level can make use of the phonon supporting role migration reaches 5D1 level of Eu3 +in addition to the radiation emitted transition of 541nm blue and 487nm green  light .Thus enhanced Eu3 +  light emission at 589nm and 611nm . White light emission process of the sample was discussed by energy-level diagram .
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