文章信息/Info

Title:

Characterization of Thermoelectric Properties

文章編號(hào):

1674-3962(2022)12-1018-11

作者:

鄭欣; 韓屾; 高梓恒; 付晨光; 朱鐵軍

（浙江大學(xué)材料科學(xué)與工程學(xué)院 硅材料國(guó)家重點(diǎn)實(shí)驗(yàn)室，浙江 杭州 310027）

Author(s):

ZHENG Xin;  HAN Shen;  GAO Ziheng;  FU Chenguang;  ZHU Tiejun

(State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China)

關(guān)鍵詞:

熱電材料; 性能表征; Seebeck系數(shù); 電導(dǎo)率; 熱導(dǎo)率

Keywords:

thermoelectric materials;  properties measurement;  Seebeck coefficient;  electrical conductivity;  thermal conductivity

分類(lèi)號(hào):

TM201.4；TM241.2

DOI:

10.7502/j.issn.1674-3962.202208039

文獻(xiàn)標(biāo)志碼:

A

摘要:

在能源危機(jī)和碳中和環(huán)保主題的大背景下，可實(shí)現(xiàn)溫差發(fā)電和固態(tài)制冷應(yīng)用的半導(dǎo)體熱電材料受到越來(lái)越廣泛的關(guān)注。目前已有熱電材料實(shí)現(xiàn)了商業(yè)化應(yīng)用，但器件的轉(zhuǎn)化效率仍不夠理想。高轉(zhuǎn)化效率器件的開(kāi)發(fā)亟需高熱電優(yōu)值的材料作為支撐，熱電材料的性能若得到一定程度的提升可帶來(lái)極大的商業(yè)化影響，因此準(zhǔn)確表征材料的熱電性能對(duì)于開(kāi)發(fā)新型高效熱電材料并促進(jìn)熱電器件廣泛應(yīng)用至關(guān)重要�？紤]到熱電研究涉及多項(xiàng)基礎(chǔ)物性參數(shù)，且熱電表征的原理和手段復(fù)雜多樣，分別討論了幾種不同溫區(qū)范圍內(nèi)熱電性能的表征手段，結(jié)合實(shí)例就寬溫區(qū)Seebeck系數(shù)、電導(dǎo)率、熱導(dǎo)率等的測(cè)量原理、操作注意事項(xiàng)及數(shù)據(jù)誤差甄別方法等進(jìn)行了詳細(xì)介紹，為進(jìn)行準(zhǔn)確可重復(fù)的熱電性能測(cè)試、獲得高質(zhì)量的實(shí)驗(yàn)數(shù)據(jù)提供參考。

Abstract:

Under the background of the energy crisis and the theme of carbon neutrality and environmental protection, thermoelectric (TE) materials, which can realize TE power generation and solid-state refrigeration applications, have attracted increasing research attention. TE materials have been commercialized during the past decades, while the conversion efficiency of TE devices, determined by the figure of merit zT of TE materials, is not ideal. The improvement in the TE performance of materials could have a positive impact on commercialization. Therefore, accurate characterization of TE properties is crucial for the development of TE materials and device applications. Considering the multiplicity of basic physical parameters and the diversity of measurement methods, here we discuss several characterization means of TE performance in the wide temperature ranges, and introduce in detail the measurement principles, operation precautions, and data error in the measurements of Seebeck coefficient, electrical conductivity, and thermal conductivity, hoping for offering some useful references for researchers to carry out accurate and repeatable TE property measurement to obtain high-quality experimental data.