稀土元素 Pr 实现了 Cu12Sb4S13 的高热电性能

IF 1.6 4区物理与天体物理 Q3 PHYSICS, CONDENSED MATTER

The European Physical Journal B Pub Date : 2024-06-21 DOI:10.1140/epjb/s10051-024-00716-1

Chen Zhu, Feng Hu, Lei Jiang, Shouxi Jiang, Kun Ding, Jian Shao, Manman Ding, Fali Chong

{"title":"稀土元素 Pr 实现了 Cu12Sb4S13 的高热电性能","authors":"Chen Zhu, Feng Hu, Lei Jiang, Shouxi Jiang, Kun Ding, Jian Shao, Manman Ding, Fali Chong","doi":"10.1140/epjb/s10051-024-00716-1","DOIUrl":null,"url":null,"abstract":"<div>Cu12Sb4S13 has received great attention due to its remarkable thermoelectric properties among medium-temperature range. Herein, the effect of rare earth element Pr substitution at Cu site of Cu12Sb4S13 is comprehensively investigated. Heavy rare earth element Pr substitution can induce strong mass fluctuation and strain-field fluctuation, resulting in intense phonon scattering and decreased lattice thermal conductivity. Consequently, a low lattice thermal conductivity κL of 0.42 W m−1 K−1 is obtained at 748 K in Cu11.7Pr0.3Sb4S13 sample. Additionally, the substitution of Pr for Cu can function as donors, tuning the hole concentration and optimizing the thermopower over the entire temperature range, with a maximum thermopower of 165 μV K−1 at 748 K. Correspondingly, a peak ZT of~0.9 is obtained at 748 K in Cu11.7Pr0.3Sb4S13 sample, due to the significantly reduced thermal conductivity and slightly enhanced power factor.\n<h3>Graphical abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div><div>Perspective of Cu12Sb4S13 crystal structure and the temperature-dependent ZT for Cu12-xPrxSb4S13 samples</div></div></figure></div></div>","PeriodicalId":787,"journal":{"name":"The European Physical Journal B","volume":"97 6","pages":""},"PeriodicalIF":1.6000,"publicationDate":"2024-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Rare earth element Pr enables high thermoelectric performance of Cu12Sb4S13\",\"authors\":\"Chen Zhu, Feng Hu, Lei Jiang, Shouxi Jiang, Kun Ding, Jian Shao, Manman Ding, Fali Chong\",\"doi\":\"10.1140/epjb/s10051-024-00716-1\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div>Cu12Sb4S13 has received great attention due to its remarkable thermoelectric properties among medium-temperature range. Herein, the effect of rare earth element Pr substitution at Cu site of Cu12Sb4S13 is comprehensively investigated. Heavy rare earth element Pr substitution can induce strong mass fluctuation and strain-field fluctuation, resulting in intense phonon scattering and decreased lattice thermal conductivity. Consequently, a low lattice thermal conductivity κL of 0.42 W m−1 K−1 is obtained at 748 K in Cu11.7Pr0.3Sb4S13 sample. Additionally, the substitution of Pr for Cu can function as donors, tuning the hole concentration and optimizing the thermopower over the entire temperature range, with a maximum thermopower of 165 μV K−1 at 748 K. Correspondingly, a peak ZT of~0.9 is obtained at 748 K in Cu11.7Pr0.3Sb4S13 sample, due to the significantly reduced thermal conductivity and slightly enhanced power factor.\\n<h3>Graphical abstract</h3>\\n<div><figure><div><div><picture><source><img></source></picture></div><div>Perspective of Cu12Sb4S13 crystal structure and the temperature-dependent ZT for Cu12-xPrxSb4S13 samples</div></div></figure></div></div>\",\"PeriodicalId\":787,\"journal\":{\"name\":\"The European Physical Journal B\",\"volume\":\"97 6\",\"pages\":\"\"},\"PeriodicalIF\":1.6000,\"publicationDate\":\"2024-06-21\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"The European Physical Journal B\",\"FirstCategoryId\":\"4\",\"ListUrlMain\":\"https://link.springer.com/article/10.1140/epjb/s10051-024-00716-1\",\"RegionNum\":4,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"PHYSICS, CONDENSED MATTER\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"The European Physical Journal B","FirstCategoryId":"4","ListUrlMain":"https://link.springer.com/article/10.1140/epjb/s10051-024-00716-1","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"PHYSICS, CONDENSED MATTER","Score":null,"Total":0}

引用次数: 0

摘要

Cu12Sb4S13 因其在中温范围内的显著热电性能而备受关注。本文全面研究了稀土元素 Pr 在 Cu12Sb4S13 的 Cu 位点上的取代效应。重稀土元素 Pr 取代会引起强烈的质量波动和应变场波动，导致强烈的声子散射和晶格热导率降低。因此，Cu11.7Pr0.3Sb4S13 样品在 748 K 时的晶格热导率κL 低至 0.42 W m-1 K-1。此外，用 Pr 替代 Cu 可作为供体，在整个温度范围内调节空穴浓度并优化热功率，在 748 K 时的最大热功率为 165 μV K-1。相应地，由于热导率显著降低和功率因数略有提高，Cu11.7Pr0.3Sb4S13 样品在 748 K 时的 ZT 峰值为~0.9。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Rare earth element Pr enables high thermoelectric performance of Cu12Sb4S13

查看原文本刊更多论文

Rare earth element Pr enables high thermoelectric performance of Cu12Sb4S13

Cu₁₂Sb₄S₁₃ has received great attention due to its remarkable thermoelectric properties among medium-temperature range. Herein, the effect of rare earth element Pr substitution at Cu site of Cu₁₂Sb₄S₁₃ is comprehensively investigated. Heavy rare earth element Pr substitution can induce strong mass fluctuation and strain-field fluctuation, resulting in intense phonon scattering and decreased lattice thermal conductivity. Consequently, a low lattice thermal conductivity κ_L of 0.42 W m⁻¹ K⁻¹ is obtained at 748 K in Cu_11.7Pr_0.3Sb₄S₁₃ sample. Additionally, the substitution of Pr for Cu can function as donors, tuning the hole concentration and optimizing the thermopower over the entire temperature range, with a maximum thermopower of 165 μV K⁻¹ at 748 K. Correspondingly, a peak ZT of~0.9 is obtained at 748 K in Cu_11.7Pr_0.3Sb₄S₁₃ sample, due to the significantly reduced thermal conductivity and slightly enhanced power factor.