• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2016, Vol. 52 ›› Issue (12): 199-204.doi: 10.3901/JME.2016.12.199

• 交叉与前沿 • 上一篇    下一篇

单晶体氧化锌微/纳米带电阻与长度的特性研究

戴冰1, 于广滨1, 2, 邵俊鹏1, 刘迪1, 陈巨辉1, 宋金会1, 3   

  1. 1. 哈尔滨理工大学机械动力工程学院 哈尔滨 150080;
    2. 哈尔滨工业大学化工学院 哈尔滨 150001;
    3. 美国阿拉巴马大学材料工程学院 阿拉巴马 36771 美国
  • 出版日期:2016-06-15 发布日期:2016-06-15
  • 作者简介:戴冰,女,1980年出生,博士。主要研究方向为纳米技术、数值模拟。于广滨(通信作者),男,1978年出生,教授。主要研究方向为纳米机械、数值模拟。E-mail:yu_ccna@163.com邵俊鹏,男,1956年出生,教授。主要研究方向为流体机械、数值模拟。E-mail:Sjp566@sina.com陈巨辉,女,1982年出生,博士,副教授。主要研究方向为流体机械、数值模拟。E-mail:chenjuhui@hit.edu.cn宋金会,男,1975年出生,博士,研究员,博士研究生导师。主要研究方向为纳米技术、数值模拟。E-mail:jhsong@eng.ua.edu
  • 基金资助:
    黑龙江自然科学基金重点(ZD20140139)和黑龙江省自然科学基金(E201441)资助项目

Properties of Single Crystal Zinc Oxide Micro/nanobelt with Resistance and Length

DAI Bing1, YU Guangbin1, 2, SHAO Junpeng1, LIU Di1, CHEN Juhui1, SONG Jinhui1, 3   

  1. 1. College of Mechanical Engineering, Harbin University of Science and Technology, Harbin 150080;
    2. Chemical Engineering Institute, Harbin Institute of Technology, Harbin 150001;
    3. College of Material Engineering, University of Alabama, Alabama 36771, USA
  • Online:2016-06-15 Published:2016-06-15

摘要: 采用化学气相沉积法制备单晶体氧化锌微/纳米带,通过银膏将其固定在镀有二氧化硅绝缘层的硅基板上,用镀有铂金属的导电原子力显微镜探针触碰单晶体氧化锌微/纳米带,构成测量回路。通过试验获得氧化锌微/纳米带电阻与其长度呈非线性关系,并且当长度到达切断长度时,微/纳米带电阻突然增大;试验测得切断长度为17.5 μm,且切断长度附近的电阻与长度关系也是非线性。建立氧化锌微/纳米带的平面导电模型,说明在氧化锌微/纳米带中电子倾向于在主导电平面内运动。分析得出单晶体氧化锌微/纳米带晶格面的各向异性是使其电阻与长度呈指数的增长关系的主要原因,与试验相符。此外,通过向氧化锌内掺杂Bi2O3、Co2O3等杂质发现,杂质的加入能使氧化锌微/纳米带的电阻与长度的非线性关系发生改变。

关键词: 电阻非线性, 各向异性, 平面导电模型, 氧化锌微/纳米带

Abstract: The single crystal zinc oxide micro/nanobelt(MB/NB) is synthesized by the method of chemical vapor deposition, then it is fixed on a silicon wafer which is coated with a silicon oxide insulating layer by silver paste. The Pt coated conductive atomic force microscope(AFM) probe, which acted as one electrode, scanned the MB/NB surface, which also acted as the other electrode, in tapping mode to acquire I-V curves. The measured result reveals that the electrical resistance of the ZnO MB/NB is exponential to its length, and when the length reaches the cut off length, the resistance increases suddenly. The cut off length is 17.5 μm by the experimental measured, and the I-V curves near the cut off length are non-linear also. A planar conductive model about the flow of electrons in ZnO MB/NB are proposed, through the analysis of model draw the conclusion that the electrons tend to move within the dominant conductive plane and the anisotropic of single crystal ZnO MB/NB with lattice plane is the main reason which lead to the nonlinear relationship between resistance and length. The results fit the experimental measurement well. In addition, by doping Bi2O3 and Co2O3, the nonlinear relationship between the length and the resistance of the ZnO MB/NB may change.

Key words: anisotropic, nonlinear resistance, planar conductive model, ZnO MB/NB

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