Strong localization effect in temperature dependence of violet-blue emission from ZnO nanoshells

被引：55

作者：

Zeng, Haibo ^{[1
]}

Li, Zhigang ^{[1
]}

Cai, Weiping ^{[1
]}

Liu, Peisheng ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Solid State Phys, Anhui Key Lab Nanomat & Nanotechnol, Key Lab Mat Phys, Hefei 230031, Peoples R China

来源：

JOURNAL OF APPLIED PHYSICS | 2007年 / 102卷 / 10期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1063/1.2803712

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Violet-blue photoluminescence of Zn/ZnO core/shell nanoparticles, induced by laser ablation in liquid, was observed. The emission band shows an abnormal red first and then blueshift with temperature increasing from 8 to 300 K and abnormal narrowing at the temperature range from 30 to 130 K. Such temperature-dependent behaviors can be well described by localization model on interstitial zinc defect on both peak energy and peak width evolutions, reflecting the strong localization effect from the special microstructure. This work will be beneficial to understanding of the physical origins of the violet-blue emission in nanostructured ZnO, and extending its optical and electronic applications. (C) 2007 American Institute of Physics.

引用

页数：4

共 22 条

[1] SURFACE EFFECTS ON LOW-ENERGY CATHODOLUMINESCENCE OF ZINC-OXIDE [J].