Bright white upconversion luminescence in rare-earth-ion-doped Y2O3 nanocrystals

被引：186

作者：

Chen, G. Y. ^{[1
]}

Liu, Y.

Zhang, Y. G.

Somesfalean, G.

Zhang, Z. G.

Sun, Q.

Wang, F. P.

机构：

[1] Harbin Inst Technol, Dept Phys, Harbin 150001, Peoples R China

[2] Harbin Inst Technol, Dept Appl Chem, Harbin 150001, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2007年 / 91卷 / 13期

关键词：

D O I：

10.1063/1.2787893

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Room temperature bright white upconversion (UC) luminescence in Yb3+-Tm3+-Er3+ ions doped Y2O3 nanocrystals was obtained under single-wavelength diode laser excitation of 976 nm. The white light consists of the blue, green, and red UC radiations which correspond to the transitions (1)G(4)-> H-3(6) of Tm3+, H-2(11/2)/S-4(3/2)-> I-4(15/2), and F-4(9/2)-> I-4(15/2) of Er3+ ions, respectively. The UC mechanisms were proposed based on spectral, kinetic, and pump power dependence analyses. The calculated color coordinates display that white light can be achieved in a wide range of pumping powers, which promises their potential applications in the field of displays, lasers, photonics, and biomedicine. (C) 2007 American Institute of Physics.

引用

页数：3

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