氧化锌纳米结构的电化学控制制备及其光致发光性能

doi:10.3724/SP.J.1077.2011.00602

无机材料学报 ›› 2011, Vol. 26 ›› Issue (6): 602-606.DOI: 10.3724/SP.J.1077.2011.00602

氧化锌纳米结构的电化学控制制备及其光致发光性能

张雯¹, 贺永宁², 周成波², 崔吾元²

(西安交通大学1. 理学院; 2. 电信学院, 西安 710049)

收稿日期:2010-08-26 修回日期:2010-10-22 出版日期:2011-06-20 网络出版日期:2011-06-07
作者简介:张雯(1974-), 女, 博士, 副教授. E-mail: zhangwen@mail.xjtu.edu.cn
基金资助:
国家自然科学基金(60876038); 西安交通大学校内基金(08140011)

Controlled Growth of Zinc Oxide Nano Structures by Electrochemical Synthesis and Their Photoluminescence Properties

ZHANG Wen¹, HE Yong-Ning², ZHOU Cheng-Bo², CUI Wu-Yuan²

(1. School of Science, Xi’an Jiaotong University, Xi’an 710049, China; 2. School of Electronic and Information Engineering, Xi’an Jiaotong University, Xi’an 710049, China)

Received:2010-08-26 Revised:2010-10-22 Published:2011-06-20 Online:2011-06-07
Supported by:
National Natural Science Foundation of China (60876038); Science Foundation of Xi’an Jiaotong University (08140011)

摘要/Abstract

摘要： 利用电化学沉积法, 通过调节电解液浓度、时间、温度等因素, 在氧化铟锡(ITO)导电玻璃上制备了形貌不同的氧化锌(ZnO)纳米薄膜. 通过X射线衍射、扫描电镜、透射电镜、光致发光谱等测试手段对不同形貌的ZnO纳米薄膜进行了表征和研究. 研究表明, 在高于阈值电压的情况下氧化锌薄膜迅速生成, 微观形貌主要受电解质溶液的浓度影响, 随着电解质浓度的升高可分别获得胞芽状、棒状、片层状结构, 结合晶体生长理论探讨了不同形貌ZnO薄膜的成因. 室温光致发光谱显示片状的ZnO纳米薄膜在近带边有较强的宽化激发峰, 而可见区的发光峰受到明显抑制, 这一结构有望应用于光电器件、传感器等领域.

关键词: 氧化锌, 纳米结构, 电化学法, 光致发光

Abstract: Different types of zinc oxide (ZnO) nanostructures were prepared by electrochemical synthesis on an indium tin oxide (ITO) glass substrate by adjusting the concentration of the electrolyte, deposition time and temperature. X-ray diffraction (XRD), scanning electron microscope (SEM), high resolution transmission electron microscope (HRTEM) and photoluminescence (PL) spectrum were to determine the characteristics of these ZnO nano structures. The results show that ZnO films is formed quickly at the voltage over a threshold. The ZnO films morphologies are determined by the concentration of the electrolyte. Nanobuds, nanorods, flakes can be obtained in turn with the concentration of Zn(NO₃)₂·6H₂O increasing. Such different morphology formation mechanisms are discussed on the basis of crystal growth theory. The PL spectra of the samples show that the flake ZnO films have a significant widen near edge emission peak with the depressed visible emission, which may have potential applications on optoelectronic devices and sensors.

Key words: zinc oxide, nanostructures, electrochemical synthesis, photoluminescence

中图分类号:

TQ132

张雯, 贺永宁, 周成波, 崔吾元. 氧化锌纳米结构的电化学控制制备及其光致发光性能[J]. 无机材料学报, 2011, 26(6): 602-606.

ZHANG Wen, HE Yong-Ning, ZHOU Cheng-Bo, CUI Wu-Yuan. Controlled Growth of Zinc Oxide Nano Structures by Electrochemical Synthesis and Their Photoluminescence Properties[J]. Journal of Inorganic Materials, 2011, 26(6): 602-606.

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氧化锌纳米结构的电化学控制制备及其光致发光性能

Controlled Growth of Zinc Oxide Nano Structures by Electrochemical Synthesis and Their Photoluminescence Properties

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