Effect of Yb3+ Concentrations on the Upconversion Luminescence Properties of ZrO2:Er3+,Yb3+ Phosphors

被引：9

作者：

Noh, Hyeon Mi ^{[1
]}

Yang, Hyun Kyoung ^{[1
]}

Moon, Byung Kee ^{[1
]}

Choi, Byung Chun ^{[1
]}

Jeong, Jung Hyun ^{[1
]}

Choi, Haeyoung ^{[2
]}

Kim, Jung Hwan ^{[2
]}

机构：

[1] Pukyong Natl Univ, Dept Phys, Pusan 608737, South Korea

[2] Dong Eui Univ, Dept Phys, Pusan 614714, South Korea

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2013年 / 52卷 / 01期

基金：

新加坡国家研究基金会;

关键词：

ER3+ ENERGY-TRANSFER; EMISSION; GLASS; BLUE;

D O I：

10.7567/JJAP.52.01AM02

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

ZrO2:Er3+ and ZrO2:Er3+,Yb3+ phosphors were synthesized via a solvothermal reaction method. For low concentrations of Yb3+, the crystalline structure changed from the tetragonal to monoclinic phase as sintering temperature increased. As the Yb3+ concentration increased to a value above 0.05 mol, ZrO2 phosphors displayed a very stable tetragonal phase. The green and red upconversion emissions of ZrO2: Er3+,Yb3+ phosphors were measured under the excitation with a 975nm continuous wave diode laser, and the pump power dependence of upconversion intensity was investigated. As the Yb3+ concentration increased from 0 to 0.05 mol, the red upconversion emission intensity increased more rapidly than the green emission intensity. This is attributed to the energy transfer (I-4(11/2) -> I-4(15/2):I-4(13/2) -> F-4(9/2)) between Er3+ ions and the energy back transfer [S-4(3/2):I-4(13/2)(Er3+) -> F-2(7/2):F-2(5/2)(Yb3+)] between the Er3+ and Yb3+ ions. In this case, the pump power dependence of red emission intensity changed from quadratic to linear as Yb3+ concentration increased. (C) 2013 The Japan Society of Applied Physics

引用

页数：4

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