Synthesis and field emission properties of ZnCdO hollow micro-nano spheres

被引：31

作者：

Li, Guangming ^{[1
]}

Wang, Xinchang ^{[1
]}

Wang, Yinghua ^{[1
]}

Shi, Xinwei ^{[1
]}

Yao, Ning ^{[1
]}

Zhang, Binglin ^{[1
]}

机构：

[1] Zhengzhou Univ, Sch Phys & Engn, Key Lab Mat Phys, Zhengzhou 450052, Peoples R China

来源：

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2008年 / 40卷 / 08期

关键词：

ZnCdO; hollow micro-nano spheres; growth mechanism; field emission;

D O I：

10.1016/j.physe.2007.07.030

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The ZnCdO hollow micro-nano spheres have been achieved on the Si substrates without any catalysts using a simple thermal evaporation method. X-ray diffraction spectra confirm that the sample is a hexagonal wurtzite structure, and a little Cd doping would not change the crystal structures of ZnO. The growth mechanism of the ZnCdO hollow micro-nano spheres is deduced in detail. The PL spectra illustrate that Cd doping could induce the red-shift of optical band gap. Field emission measurements show a low turn-on field of similar to 1.86V/mu m at a current density of 1 mu A/cm(2). The emission current density reached 1 mA/cm(2) at an applied field of similar to 9.26 V/mu m. (C) 2008 Published by Elsevier B.V.

引用

页码：2649 / 2653

页数：5

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