Fabrication of Tetrapod-liked Al-doped ZnO Nanostructures and Their Photoluminescence and Field Emission Properties

ZHOU Xiong-tu; ZENG Xiang-yao; ZHANG Yong-ai; GUO Tai-liang

doi:10.3788/fgxb20133411.1424

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Fabrication of Tetrapod-liked Al-doped ZnO Nanostructures and Their Photoluminescence and Field Emission Properties

更新时间：2020-08-12

- Fabrication of Tetrapod-liked Al-doped ZnO Nanostructures and Their Photoluminescence and Field Emission Properties
- Chinese Journal of Luminescence Vol. 34, Issue 11, Pages: 1424-1429(2013)
- 作者机构：
  
  福州大学物理与信息工程学院,福建福州,中国,350108
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20133411.1424
  CLC： TB34;O614.81
- Received：09 July 2013，
  
  Revised：24 July 2013，
  
  Published：10 November 2013
- 稿件说明：
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周雄图, 曾祥耀, 张永爱, 郭太良. Al掺杂四针状ZnO纳米结构的制备及其光致发光和场发射特性[J]. 发光学报, 2013,34(11): 1424-1429

ZHOU Xiong-tu, ZENG Xiang-yao, ZHANG Yong-ai, GUO Tai-liang. Fabrication of Tetrapod-liked Al-doped ZnO Nanostructures and Their Photoluminescence and Field Emission Properties[J]. Chinese Journal of Luminescence, 2013,34(11): 1424-1429
周雄图, 曾祥耀, 张永爱, 郭太良. Al掺杂四针状ZnO纳米结构的制备及其光致发光和场发射特性[J]. 发光学报, 2013,34(11): 1424-1429 DOI： 10.3788/fgxb20133411.1424.

ZHOU Xiong-tu, ZENG Xiang-yao, ZHANG Yong-ai, GUO Tai-liang. Fabrication of Tetrapod-liked Al-doped ZnO Nanostructures and Their Photoluminescence and Field Emission Properties[J]. Chinese Journal of Luminescence, 2013,34(11): 1424-1429 DOI： 10.3788/fgxb20133411.1424.

摘要

采用热蒸发法成功制备了Al掺杂四针状ZnO纳米结构(T-AZO)

利用扫描电子显微镜、X射线衍射仪、荧光光谱仪和场发射测试系统分别研究了不同Al摩尔分数对T-AZO纳米结构表面形貌、微结构、光致发光谱和场发射特性的影响。实验结果表明:T-AZO纳米结构呈现六角纤锌矿结构

Al掺杂对四针状ZnO纳米结构的形貌产生明显影响并且使紫外发射峰产生蓝移。实验中

当Al掺杂摩尔分数为3%时

场发射性能最好

其开启场强为1.33 V/m

场增强因子为8 420。

Abstract

High-quality tetrapod-shaped Al-doped ZnO (T-AZO) nanostructures were synthesized via thermal evaporation of mixed Zn and Al powders. The effects of Al dopant concentration on the morphology

microstructure

optical and field emission (FE) properties of T-AZO were investigated using scanning electronic microscopy (SEM)

X-ray diffraction (XRD)

photoluminescence (PL) spectra and FE measurement. It is found that the incorporation of Al increases the aspect ratio of the tetrapods

leads to blue-shift in the UV region

and significantly improves the FE performances. The results also show that tetrapod cathodes with 3% Al mole fraction have the best FE properties

with a turn-on field of 1.33 V/m

and a field enhancement factor as high as 8 420. The superior FE properties are mainly attributed to the high aspect ratio of the legs in the unique tetrapod-liked structures

and more electrons being induced in the conduction band by Al dopand.

关键词

Keywords

references

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