低点阵热导率大块Cr2Te3的热电特性

IF 2.1 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Electronic Materials Letters Pub Date : 2024-09-25 DOI:10.1007/s13391-024-00523-x

Donghyun Shin, Hyunji Kim, Joseph Ngugi Kahiu, Samuel Kimani Kihoi, Ho Seong Lee

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引用次数: 0

摘要

在这项研究中，我们的目的是合成块状的Cr2Te3，并评估其热电性能。在此之前，层状结构的Cr2Te3主要以薄膜形式合成，主要用于研究其磁性。Cr₂Te₃固有的层状结构有助于其低晶格导热系数。我们的实验结果证实了均匀单相样品的成功合成，并且在673 K时晶格热导率显著降低，为0.31 W/mK。此外，我们探索了钛和锗在铬位点的替代，作为一种提高热电性能的方法，实现了功率因数的显着增加。图形抽象

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Thermoelectric Characteristics of Bulk Cr2Te3 with Low Lattice Thermal Conductivity

In this study, we aimed to synthesize bulk Cr₂Te₃ and evaluate its thermoelectric properties. Previously, Cr₂Te₃ with a layered structure has primarily been synthesized in thin film form for studies that focused on its magnetic properties. The intrinsic layered structure of Cr₂Te₃ can contributes to its low lattice thermal conductivity. Our experimental results confirmed the successful synthesis of a homogeneous single-phase specimen and revealed a significantly low lattice thermal conductivity of 0.31 W/mK at 673 K. Additionally, we explored the substitution of titanium and germanium at chromium sites as a method to enhance thermoelectric performance, achieving a notable increase in the power factor.

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来源期刊

Electronic Materials Letters 工程技术-材料科学：综合

CiteScore

4.70

自引率

20.80%

发文量

审稿时长

2.3 months

期刊介绍： Electronic Materials Letters is an official journal of the Korean Institute of Metals and Materials. It is a peer-reviewed international journal publishing print and online version. It covers all disciplines of research and technology in electronic materials. Emphasis is placed on science, engineering and applications of advanced materials, including electronic, magnetic, optical, organic, electrochemical, mechanical, and nanoscale materials. The aspects of synthesis and processing include thin films, nanostructures, self assembly, and bulk, all related to thermodynamics, kinetics and/or modeling.