Three-photon upconversion luminescence phenomenon for the green levels in Er3+/Yb3+ codoped cubic nanocrystalline yttria

被引：139

作者：

Song, HW ^{[1
]}

Sun, BJ ^{[1
]}

Wang, T ^{[1
]}

Lu, SZ ^{[1
]}

Yang, LM ^{[1
]}

Chen, BJ ^{[1
]}

Wang, XJ ^{[1
]}

Kong, XG ^{[1
]}

机构：

[1] Chinese Acad Sci, Key Lab Excited State Phys, Changchun Inst Opt Fine Mech & Phys, Changchun 130033, Peoples R China

来源：

SOLID STATE COMMUNICATIONS | 2004年 / 132卷 / 06期

关键词：

nanostructures; luminescence;

D O I：

10.1016/j.ssc.2004.07.044

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

In this paper, we observed that in Er3+/Yb3+ codoped nanocrystals (NC), with the decreasing particle size and the increasing Yb3+ concentration, the upconversion luminescence (UCL) of the red emissions of F-4(9/2)-I-4(15/2) gradually increased, while the green emissions of S-4(3/2)/H-2(11/2) gradually diminished under 980 nm diode laser excitation. In NC with lower Yb3+ concentration, both the red and green emissions result from a two-photon excitation. In NC with higher Yb3+ concentration, the red emissions result from a two-photon excitation, while the green emissions dominantly result from a three-photon excitation. A model was provided for explaining the above UCL phenomena. (C) 2004 Elsevier Ltd. All rights reserved.

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页码：409 / 413

页数：5

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