TY - JOUR
T1 - Enhancement of red fluorescence and afterglow in CaTiO3
T2 - Pr3+ by addition of Lu2O3
AU - Zhang, Xianmin
AU - Zhang, Jiahua
AU - Zhang, Xia
AU - Chen, Li
AU - Lu, Shaozhe
AU - Wang, Xiao Jun
N1 - Funding Information:
This work was supported by the One Hundred Talents Project of Chinese Academy of Science, MOST of China (No. 2006CB601104) and the National Natural Science Foundation of China under Grant nos. 10574128, 90201010.
PY - 2007/1
Y1 - 2007/1
N2 - CaTiO3: Pr3+ with addition Lu2O3 are synthesized by conventional solid-state reaction methods. It is found that the addition of Lu leads to the enhancement of red fluorescence and phosphorescence at 615 nm originating from 1D2→3H4 transition of Pr3+, following the increase of the lifetime for the 1D2 state. As a result, it is indicated that the non-radiative centers for the 1D2 state are suppressed by the addition of Lu ions. The persistent time of the afterglow is observed to increase from less than 15 min to over 2 h after the addition of 5 mol% Lu2O3. A tentative mechanism of the Lu-addition effect on the optical properties is discussed.
AB - CaTiO3: Pr3+ with addition Lu2O3 are synthesized by conventional solid-state reaction methods. It is found that the addition of Lu leads to the enhancement of red fluorescence and phosphorescence at 615 nm originating from 1D2→3H4 transition of Pr3+, following the increase of the lifetime for the 1D2 state. As a result, it is indicated that the non-radiative centers for the 1D2 state are suppressed by the addition of Lu ions. The persistent time of the afterglow is observed to increase from less than 15 min to over 2 h after the addition of 5 mol% Lu2O3. A tentative mechanism of the Lu-addition effect on the optical properties is discussed.
KW - Pr
KW - Red afterglow
KW - Red phosphor
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U2 - 10.1016/j.jlumin.2006.01.337
DO - 10.1016/j.jlumin.2006.01.337
M3 - Article
AN - SCOPUS:33750951908
VL - 122-123
SP - 958
EP - 960
JO - Journal of Luminescence
JF - Journal of Luminescence
SN - 0022-2313
IS - 1-2
ER -