Single band upconversion mechanisms of Er3+/Yb3+:ZrO2 nanocrystals

被引：11

作者：

Liu, Lu ^{[1
,2
]}

Wang, Yuxiao ^{[1
]}

Bai, Yunfeng ^{[1
]}

Zhang, Xueru ^{[1
]}

Yang, Kun ^{[1
]}

Huang, Chuanhai ^{[1
]}

Song, Yinglin ^{[1
,3
]}

机构：

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

[2] Harbin Engn Univ, Sch Sci, Harbin 150001, Peoples R China

[3] Suzhou Univ, Sch Phys Sci & Technol, Suzhou 215006, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2012年 / 285卷 / 06期

关键词：

Single band; Upconversion mechanisms; ZrO2; Rate equations; ER3+-ZRO2 NANOCRYSTALS; LUMINESCENCE; EMISSION; NANOPHOSPHORS;

D O I：

10.1016/j.optcom.2011.11.074

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate single band upconversion spectra of Er3+ and Yb3+ codoped ZrO2 nanocrystals. Ratios of green to red emission in Er3+ doped ZrO2 and red to green emission in Er3+/Yb3+ codoped ZrO2 are 8 and 10, respectively. Rate equations for rare earth energy level populations are used to investigate the upconversion mechanisms on the basis of the upconversion intensity dependences of pump power. Excited state absorption and energy transfer are the dominant processes in Er3+ doped and Er3+/Yb3+ codoped ZrO2, respectively. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：1528 / 1532

页数：5

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