›› 2014, Vol. 23 ›› Issue (7): 76403-076403.doi: 10.1088/1674-1056/23/7/076403

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇    下一篇

Electrical and optical properties of indium tin oxide/epoxy composite film

郭霞, 郭春威, 陈宇, 苏治平   

  1. Photonic Device Research Lab, Beijing University of Technology, Beijing 100124, China
  • 收稿日期:2013-12-03 修回日期:2014-04-02 出版日期:2014-07-15 发布日期:2014-07-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61222501 and 61335004).

Electrical and optical properties of indium tin oxide/epoxy composite film

Guo Xia (郭霞), Guo Chun-Wei (郭春威), Chen Yu (陈宇), Su Zhi-Ping (苏治平)   

  1. Photonic Device Research Lab, Beijing University of Technology, Beijing 100124, China
  • Received:2013-12-03 Revised:2014-04-02 Online:2014-07-15 Published:2014-07-15
  • Contact: Guo Xia E-mail:guo@bjut.edu.cn
  • About author:64.60.Ak; 83.80.Sg; 73.23.-b; 78.20.Ci
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61222501 and 61335004).

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摘要： The electrical and optical properties of the indium tin oxide (ITO)/epoxy composite exhibit dramatic variations as functions of the ITO composition and ITO particle size. Sharp increases in the conductivity in the vicinity of a critical volume fraction have been found within the framework of percolation theory. A conductive and insulating transition model is extracted by the ITO particle network in the SEM image, and verified by the resistivity dependence on the temperature. The dependence of the optical transmittance on the particle size was studied. Further decreasing the ITO particle size could further improve the percolation threshold and light transparency of the composite film.

关键词: percolation effect, indium tin oxide/epoxy composite film, electrical state transition, optical transmittance

Abstract: The electrical and optical properties of the indium tin oxide (ITO)/epoxy composite exhibit dramatic variations as functions of the ITO composition and ITO particle size. Sharp increases in the conductivity in the vicinity of a critical volume fraction have been found within the framework of percolation theory. A conductive and insulating transition model is extracted by the ITO particle network in the SEM image, and verified by the resistivity dependence on the temperature. The dependence of the optical transmittance on the particle size was studied. Further decreasing the ITO particle size could further improve the percolation threshold and light transparency of the composite film.

Key words: percolation effect, indium tin oxide/epoxy composite film, electrical state transition, optical transmittance

中图分类号: 

  • 64.60.Ak
83.80.Sg (Polymer melts) 73.23.-b (Electronic transport in mesoscopic systems) 78.20.Ci (Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))