Acta Optica Sinica, Volume. 31, Issue 11, 1116001(2011)
Enhancement of Upconversion Luminescence in Li+ Codoping Er3+:Y2O3 Nanocrystals
The upconversion luminescent properties are investigated in Li+ and Er3+ codoped Y2O3 nanocrystals, especially the effect of the Li+ molar fraction on the crystalline structure and the luminescent intensity. Results indicate that the samples prepared by combustion method have good crystallinity even with high Li+ codoping concentration. The luminescent test results show that with the increase of the Li+ codoping concentration, the upconversion luminescent intensity of the nanocrystals in green and red range will enhance remarkably. The lattice symmetry of the nanocrystals is modified by codoping Li+, which increases the intra-4f transition probability in Er3+.
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Lü Jiantao, Wang Kejia, Liu Jinsong, Zhang Qingquan, Zhu Qihua, Zeng Xiaoming, Yao Jianquan. Enhancement of Upconversion Luminescence in Li+ Codoping Er3+:Y2O3 Nanocrystals[J]. Acta Optica Sinica, 2011, 31(11): 1116001
Category: Materials
Received: May. 20, 2011
Accepted: --
Published Online: Oct. 17, 2011
The Author Email: Jiantao Lü (kentle@sina.com)