Ying Liu , Guihong Song , Kaiping Tai , Zhi Yu , Yijun Ran , Juan He , Yusheng Wu
{"title":"镁锡原子比对Mg2Sn薄膜热电性能的影响","authors":"Ying Liu , Guihong Song , Kaiping Tai , Zhi Yu , Yijun Ran , Juan He , Yusheng Wu","doi":"10.1016/j.tsf.2024.140585","DOIUrl":null,"url":null,"abstract":"<div><div>The influence of Mg/Sn ratio of on the thermoelectric properties of Mg-Sn films was deeply studied through preparing a series of Mg<sub>2</sub>Sn films with different Mg and Sn atomic ratios on SiO<sub>2</sub>/Si substrate. The results showed that the phase structure of the deposited Mg<sub>2</sub>Sn films varied from a metastable orthogonal phase to a mixture of orthogonal and cubic phase, and then to a highly symmetric cubic phase with increasing [Mg]/[Sn]. Meanwhile, with increasing [Mg]/[Sn], the carrier concentration and electrical conductivity of the deposited films first decreased and then increased, while the carrier mobility and Seebeck coefficient varied in an opposite trend. The cubic Mg<sub>2</sub>Sn phase film with [Mg]/[Sn] = 1.94 has the highest Seebeck coefficient and appropriate electrical conductivity, reaching the highest power factor of 3.10 μW cm<sup>-1</sup> K<sup>-2</sup> at 235 °C and figure of merit of 0.059 at 125 °C.</div></div>","PeriodicalId":23182,"journal":{"name":"Thin Solid Films","volume":"809 ","pages":"Article 140585"},"PeriodicalIF":2.0000,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Influence of atomic ratio of Mg to Sn on thermoelectric properties of Mg2Sn films\",\"authors\":\"Ying Liu , Guihong Song , Kaiping Tai , Zhi Yu , Yijun Ran , Juan He , Yusheng Wu\",\"doi\":\"10.1016/j.tsf.2024.140585\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>The influence of Mg/Sn ratio of on the thermoelectric properties of Mg-Sn films was deeply studied through preparing a series of Mg<sub>2</sub>Sn films with different Mg and Sn atomic ratios on SiO<sub>2</sub>/Si substrate. The results showed that the phase structure of the deposited Mg<sub>2</sub>Sn films varied from a metastable orthogonal phase to a mixture of orthogonal and cubic phase, and then to a highly symmetric cubic phase with increasing [Mg]/[Sn]. Meanwhile, with increasing [Mg]/[Sn], the carrier concentration and electrical conductivity of the deposited films first decreased and then increased, while the carrier mobility and Seebeck coefficient varied in an opposite trend. The cubic Mg<sub>2</sub>Sn phase film with [Mg]/[Sn] = 1.94 has the highest Seebeck coefficient and appropriate electrical conductivity, reaching the highest power factor of 3.10 μW cm<sup>-1</sup> K<sup>-2</sup> at 235 °C and figure of merit of 0.059 at 125 °C.</div></div>\",\"PeriodicalId\":23182,\"journal\":{\"name\":\"Thin Solid Films\",\"volume\":\"809 \",\"pages\":\"Article 140585\"},\"PeriodicalIF\":2.0000,\"publicationDate\":\"2025-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Thin Solid Films\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0040609024003869\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2024/12/9 0:00:00\",\"PubModel\":\"Epub\",\"JCR\":\"Q3\",\"JCRName\":\"MATERIALS SCIENCE, COATINGS & FILMS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Thin Solid Films","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0040609024003869","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2024/12/9 0:00:00","PubModel":"Epub","JCR":"Q3","JCRName":"MATERIALS SCIENCE, COATINGS & FILMS","Score":null,"Total":0}
Influence of atomic ratio of Mg to Sn on thermoelectric properties of Mg2Sn films
The influence of Mg/Sn ratio of on the thermoelectric properties of Mg-Sn films was deeply studied through preparing a series of Mg2Sn films with different Mg and Sn atomic ratios on SiO2/Si substrate. The results showed that the phase structure of the deposited Mg2Sn films varied from a metastable orthogonal phase to a mixture of orthogonal and cubic phase, and then to a highly symmetric cubic phase with increasing [Mg]/[Sn]. Meanwhile, with increasing [Mg]/[Sn], the carrier concentration and electrical conductivity of the deposited films first decreased and then increased, while the carrier mobility and Seebeck coefficient varied in an opposite trend. The cubic Mg2Sn phase film with [Mg]/[Sn] = 1.94 has the highest Seebeck coefficient and appropriate electrical conductivity, reaching the highest power factor of 3.10 μW cm-1 K-2 at 235 °C and figure of merit of 0.059 at 125 °C.
期刊介绍：
Thin Solid Films is an international journal which serves scientists and engineers working in the fields of thin-film synthesis, characterization, and applications. The field of thin films, which can be defined as the confluence of materials science, surface science, and applied physics, has become an identifiable unified discipline of scientific endeavor.
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