Improved Electrical Properties and Strong Red Emission of Pr3+-Doped x K0.5Bi0.5TiO3-(1-x)Na0.5Bi0.5TiO3 Lead-Free Ferroelectric Thin Films

被引：36

作者：

Zhou, Hong ^{[1
]}

Wu, Guangheng ^{[1
]}

Qin, Ni ^{[1
]}

Bao, Dinghua ^{[1
]}

机构：

[1] Sun Yat Sen Univ, State Key Lab Optoelect Mat & Technol, Sch Phys & Engn, Guangzhou 510275, Guangdong, Peoples R China

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2012年 / 95卷 / 02期

基金：

高等学校博士学科点专项科研基金;

关键词：

SOL-GEL METHOD; TRANSITIONS;

D O I：

10.1111/j.1551-2916.2011.05028.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Structural, photoluminescence, dielectric, and ferroelectric properties of lead-free perovskite Pr3+-doped xK(0.5)Bi(0.5)TiO(3)-(1 - x)Na0.5Bi0.5TiO3 (x = 0-1.0) thin films were studied. The thin films were prepared by a chemical solution deposition method combined with a rapid thermal annealing process at 700 degrees C. We observed that the thin film with x = 0.15, corresponding to the morphotropic phase boundary in the solid solution ceramics or single crystal bulk counterparts, showed a very large dielectric constant and a high remanent polarization, as well as a strong red emission at 611 nm assigned to D-1(2) -> H-3(4) transitions of the Pr3+ ions. In addition, this study also indicates that the morphotropic phase boundary in xK(0.5)Bi(0.5)TiO(3)-(1 - x)Na0.5Bi0.5TiO3 thin films might be probed by photoluminescence probe of Pr3+ ions because the photoluminescence of Pr3+ ions is very sensitive to the phase structure changes.

引用

页码：483 / 486

页数：4

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