无机及有机高分子材料的热电特性测量

Measuring Thermoelectric Characteristics of Inorganic and Organic Polymer Materials

为了发展无污染的热电转换清洁能源,近年来国内外加速对无机和有机热电材料的研究。而对于高阻值无机和有机热电材料的宽温区热电转换性能测试方面,目前很多研究学者仍遇到一些困难。本文论述了最新研制的一种高阻值、宽温区塞贝克系数测量系统。该系统设计制造了具有高真空度和多重电磁屏蔽的真空测试环境,一个高稳定度、高精度的温差控制平台以及在高阻条件下的微弱电压信号检测的电路系统。从而为无机、有机高分子材料薄膜或块状样品提供一种准确、稳定、精度高,操作方便、快速的测量装置,实现温度从低温80 K到高温大于500 K的宽温区范国内连续变化,可准确测量超高电阻>1012Ω的材料的塞贝克系数。

In order to develop pollution-free clean thermoelectric conversion energy,the inorganic and organic thermoelectric materials research was accelerated in recent years.However,there were some difficulties when measuring the thermoelectric characteristics of inorganic and organic materials which was high resistance or under continuous temperature change of wide temperature range.This paper introduced a homemade Seebeck coefficient measurement apparatus with wide temperature range which could measure high resistance sample which had been used by some institutes.The apparatus included a vacuum environment with ultra-high vacuum degree and electric-magnetic shield,a high stability,and high precision temperature difference control stage,a circuit system of weak voltage signal detection under high resistance conditions.The apparatus With a wide temperature change from 80 K to 500 K had the advantages of accurate,stable,high precision,convenient,rapid measurement of thin films or bulk samples and could measure the Seebeck coefficient of high resistance sample(>1012Ω).