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

doi:10.1088/1674-1056/23/7/076403

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.

Keywords: percolation effect indium tin oxide/epoxy composite film electrical state transition optical transmittance

Received: 03 December 2013
Revised: 02 April 2014
Accepted manuscript online:

PACS:	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))

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 61222501 and 61335004).

Corresponding Authors: Guo Xia
E-mail: guo@bjut.edu.cn

About author: 64.60.Ak; 83.80.Sg; 73.23.-b; 78.20.Ci

Cite this article:

Guo Xia (郭霞), Guo Chun-Wei (郭春威), Chen Yu (陈宇), Su Zhi-Ping (苏治平) Electrical and optical properties of indium tin oxide/epoxy composite film 2014 Chin. Phys. B 23 076403

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