Effect of temperature on internal potential barriers in polymer-derived amorphous ceramics

被引：2

作者：

Li, Hao ^{[1
]}

Ma, Baisheng ^{[2
]}

An, Linan ^{[1
]}

机构：

[1] Univ Cent Florida, Dept Mat Sci & Engn, Orlando, FL 32816 USA

[2] Dongguan Univ Technol, Sch Mech Engn, Dongguan 523808, Guangdong, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2019年 / 45卷 / 10期

关键词：

Polymer-derived ceramics; Internal barrier; Schottky barrier; IMPEDANCE SPECTROSCOPY; GIANT PIEZORESISTIVITY; BEHAVIOR; CARBONITRIDE; OXIDATION;

D O I：

10.1016/j.ceramint.2019.03.228

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The behavior of the internal potential barrier in a polymer-derived amorphous ceramic was studied by measuring its complex impedance spectra at various dc bias and temperatures. The results showed that the bias-dependent interfacial capacitance can be described by the double Schottky barrier model. Increasing temperature caused the increase in the charge-carrier concentration and decrease in the barrier height, following Arrhenius dependence. The phenomena are correlated to the electronic structure of the free-carbon phase and the amorphous matrix phase in the material.

引用

页码：13575 / 13578

页数：4

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