Te Nanoneedles Induced Entanglement and Thermoelectric Improvement of SnSe
Chalcogenide-based materials have attracted widespread interest in high-performance thermoelectric research fields. A strategy for the application of two types of chalcogenide for improved thermoelectric performance is described herein. Tin selenide (SnSe) is used as a base material, and Te nanoneed...
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MDPI AG
2020-06-01
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| Online Access: | https://www.mdpi.com/1996-1944/13/11/2523 |
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| author | Hyun Ju Myeongjin Kim Jinglei Yang Jooheon Kim |
| author_facet | Hyun Ju Myeongjin Kim Jinglei Yang Jooheon Kim |
| author_sort | Hyun Ju |
| collection | DOAJ |
| description | Chalcogenide-based materials have attracted widespread interest in high-performance thermoelectric research fields. A strategy for the application of two types of chalcogenide for improved thermoelectric performance is described herein. Tin selenide (SnSe) is used as a base material, and Te nanoneedles are crystallized in the SnSe, resulting in the generation of a composite structure of SnSe with Te nanoneedles. The thermoelectric properties with various reaction times are investigated to reveal the optimum conditions for enhanced thermoelectric performance. A reaction time of 4 h at 450 K generated a composite Te nanoneedles/SnSe sample with the maximum <i>ZT</i> value, 3.2 times larger than that of the pristine SnSe. This result is attributed to both the reduced thermal conductivity from the effective phonon scattering of heterointerfaces and the improved electrical conductivity value due to the introduction of Te nanoparticles. This strategy suggests an approach to generating high-performance practical thermoelectric materials. |
| first_indexed | 2024-03-10T19:27:13Z |
| format | Article |
| id | doaj.art-e365f84d03b644f08a8da622c37442d3 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T19:27:13Z |
| publishDate | 2020-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-e365f84d03b644f08a8da622c37442d32023-11-20T02:29:49ZengMDPI AGMaterials1996-19442020-06-011311252310.3390/ma13112523Te Nanoneedles Induced Entanglement and Thermoelectric Improvement of SnSeHyun Ju0Myeongjin Kim1Jinglei Yang2Jooheon Kim3School of Chemical Engineering & Materials Science, Chung-Ang University, Seoul 06974, KoreaDepartment of Hydrogen & Renewable Energy, Kyungpook National University, 80 Daehakro, Bukgu, Daegu 41566, KoreaDepartment of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Hong Kong SAR, ChinaSchool of Chemical Engineering & Materials Science, Chung-Ang University, Seoul 06974, KoreaChalcogenide-based materials have attracted widespread interest in high-performance thermoelectric research fields. A strategy for the application of two types of chalcogenide for improved thermoelectric performance is described herein. Tin selenide (SnSe) is used as a base material, and Te nanoneedles are crystallized in the SnSe, resulting in the generation of a composite structure of SnSe with Te nanoneedles. The thermoelectric properties with various reaction times are investigated to reveal the optimum conditions for enhanced thermoelectric performance. A reaction time of 4 h at 450 K generated a composite Te nanoneedles/SnSe sample with the maximum <i>ZT</i> value, 3.2 times larger than that of the pristine SnSe. This result is attributed to both the reduced thermal conductivity from the effective phonon scattering of heterointerfaces and the improved electrical conductivity value due to the introduction of Te nanoparticles. This strategy suggests an approach to generating high-performance practical thermoelectric materials.https://www.mdpi.com/1996-1944/13/11/2523thermoelectrictelluriumnanoneedlesinner-site crystallizationtin selenide |
| spellingShingle | Hyun Ju Myeongjin Kim Jinglei Yang Jooheon Kim Te Nanoneedles Induced Entanglement and Thermoelectric Improvement of SnSe Materials thermoelectric tellurium nanoneedles inner-site crystallization tin selenide |
| title | Te Nanoneedles Induced Entanglement and Thermoelectric Improvement of SnSe |
| title_full | Te Nanoneedles Induced Entanglement and Thermoelectric Improvement of SnSe |
| title_fullStr | Te Nanoneedles Induced Entanglement and Thermoelectric Improvement of SnSe |
| title_full_unstemmed | Te Nanoneedles Induced Entanglement and Thermoelectric Improvement of SnSe |
| title_short | Te Nanoneedles Induced Entanglement and Thermoelectric Improvement of SnSe |
| title_sort | te nanoneedles induced entanglement and thermoelectric improvement of snse |
| topic | thermoelectric tellurium nanoneedles inner-site crystallization tin selenide |
| url | https://www.mdpi.com/1996-1944/13/11/2523 |
| work_keys_str_mv | AT hyunju tenanoneedlesinducedentanglementandthermoelectricimprovementofsnse AT myeongjinkim tenanoneedlesinducedentanglementandthermoelectricimprovementofsnse AT jingleiyang tenanoneedlesinducedentanglementandthermoelectricimprovementofsnse AT jooheonkim tenanoneedlesinducedentanglementandthermoelectricimprovementofsnse |