Room Temperature Ferromagnetism and Photoluminescence in Cu-Doped ZnO Nanocrystals

被引：6

作者：

Kong, Liming ^{[1
,2
]}

Yu, Bin ^{[1
,2
]}

Xu, Xiaoyong ^{[1
,2
,3
]}

Pan, Jing ^{[1
,2
]}

Su, Yuanchang ^{[1
,2
]}

Hu, Jingguo ^{[1
,2
]}

机构：

[1] Yangzhou Univ, Sch Chem & Chem Engn, Yangzhou 225002, Peoples R China

[2] Yangzhou Univ, Sch Phys Sci & Technol, Yangzhou 225002, Peoples R China

[3] Southeast Univ, State Key Lab Bioelect, Nanjing 210096, Jiangsu, Peoples R China

来源：

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2014年 / 14卷 / 08期

基金：

中国国家自然科学基金;

关键词：

Cu-Doped ZnO; Ferromagnetism; Photoluminescence; IMPURITIES; EMISSION;

D O I：

10.1166/jnn.2014.8730

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The Zn1-xCuxO (x = 0.0-3.5%) nanocrystals have been synthesized by a simple sol-gel method. X-ray diffraction, optical absorption and photoluminescence measurements were employed to validate consistently the incorporation of Cu ions into the ZnO wurtzite lattice without formation of secondary phases for Zn1-xCuxO (x < 2.0%). Meanwhile, it was found that the substituted Cu-doping leads to the reduction of the band gap and the appearance of the structured green emission. Magnetization measurement showed that the low Cu-doping (x < 1.0%) develops the ferromagnetism, but the high Cu-doping destroys sharply the ferromagnetism due to the formation of the antiferro-magnetic coupling among the neighboring Cu ions. It is indicated that the rational Cu-doping can tune optical and magnetic properties in ZnO.

引用

页码：6012 / 6015

页数：4

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