中国物理B ›› 2014, Vol. 23 ›› Issue (8): 87809-087809.doi: 10.1088/1674-1056/23/8/087809
• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇 下一篇
陈晓波a, 李崧a, 丁贤林b, 杨小冬a, 刘泉林b, 高燕c, 孙萍a, 杨国建a
Chen Xiao-Bo (陈晓波)a, Li Song (李崧)a, Ding Xian-Lin (丁贤林)b, Yang Xiao-Dong (杨小冬)a, Liu Quan-Lin (刘泉林)b, Gao Yan (高燕)c, Sun Ping (孙萍)a, Yang Guo-Jian (杨国建)a
摘要: In the present paper, the concentration effect of near-infrared quantum cutting of Tm3+ ion in (Y1-xTmx)3Al5O12 powder phosphor is studied by means of experiments and calculations. In addition, the absorption spectra, visible-to-nearinfrared excitation and emission spectra, and fluorescence lifetimes are measured. It is found that (Y1-xTmx)3Al5O12 powder phosphor has a strong four-photon near-infrared quantum cutting luminescence of 1788.0-nm 3F4 →3H6 fluorescence of Tm3+ ion, when excited by 357.0-nm light. It is also found that the up-limit of the four-photon near-infrared quantum cutting luminescence efficiency of (Y0.700Tm0.300)3Al5O12 powder phosphor is approximately 302.19%. To the knowledge of the authors, this is the first time that a near-infrared quantum cutting efficiency up-limit exceeding 300% has been reported. The results of this manuscript are valuable in aiding the probing of the new generation Ge solar cell.
中图分类号: (Photoluminescence, properties and materials)