文章信息/Info

Title:

Characterization of Thermoelectric Properties

文章編號:

1674-3962(2022)12-1018-11

作者:

鄭欣; 韓屾; 高梓恒; 付晨光; 朱鐵軍

（浙江大學材料科學與工程學院 硅材料國家重點實驗室，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)

關鍵詞:

熱電材料; 性能表征; Seebeck系數; 電導率; 熱導率

Keywords:

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

分類號:

TM201.4；TM241.2

DOI:

10.7502/j.issn.1674-3962.202208039

文獻標志碼:

A

摘要:

在能源危機和碳中和環保主題的大背景下，可實現溫差發電和固態制冷應用的半導體熱電材料受到越來越廣泛的關注。目前已有熱電材料實現了商業化應用，但器件的轉化效率仍不夠理想。高轉化效率器件的開發亟需高熱電優值的材料作為支撐，熱電材料的性能若得到一定程度的提升可帶來極大的商業化影響，因此準確表征材料的熱電性能對于開發新型高效熱電材料并促進熱電器件廣泛應用至關重要。考慮到熱電研究涉及多項基礎物性參數，且熱電表征的原理和手段復雜多樣，分別討論了幾種不同溫區范圍內熱電性能的表征手段，結合實例就寬溫區Seebeck系數、電導率、熱導率等的測量原理、操作注意事項及數據誤差甄別方法等進行了詳細介紹，為進行準確可重復的熱電性能測試、獲得高質量的實驗數據提供參考。

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.