Plastic/Ductile Bulk 2D van der Waals Single‐Crystalline SnSe2 for Flexible Thermoelectrics
Abstract The recently discovered ductile/plastic inorganic semiconductors pave a new avenue toward flexible thermoelectrics. However, the power factors of current ductile/plastic inorganic semiconductors are usually low (below 5 µW cm−1 K−2) as compared with classic brittle inorganic thermoelectric...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2022-10-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202203436 |
| _version_ | 1811241314972336128 |
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| author | Tingting Deng Zhiqiang Gao Pengfei Qiu Tian‐Ran Wei Jie Xiao Genshui Wang Lidong Chen Xun Shi |
| author_facet | Tingting Deng Zhiqiang Gao Pengfei Qiu Tian‐Ran Wei Jie Xiao Genshui Wang Lidong Chen Xun Shi |
| author_sort | Tingting Deng |
| collection | DOAJ |
| description | Abstract The recently discovered ductile/plastic inorganic semiconductors pave a new avenue toward flexible thermoelectrics. However, the power factors of current ductile/plastic inorganic semiconductors are usually low (below 5 µW cm−1 K−2) as compared with classic brittle inorganic thermoelectric materials, which greatly limit the electrical output power for flexible thermoelectrics. Here, large plasticity and high power factor in bulk two‐dimensional van der Waals (2D vdW) single‐crystalline SnSe2 are reported. SnSe2 crystals exhibit large plastic strains at room temperature and they can be morphed into various shapes without cracking, which is well captured by the inherent large deformability factor. As a semiconductor, the electrical transport properties of SnSe2 can be readily tuned in a wide range by doping a tiny amount of halogen elements. A high power factor of 10.8 µW cm−1 K−2 at 375 K along the in‐plane direction is achieved in plastic single‐crystalline Br‐doped SnSe2, which is the highest value among the reported flexible inorganic and organic thermoelectric materials. Combining the good plasticity, excellent power factors, as well as low‐cost and nontoxic elements, bulk 2D vdW single‐crystalline SnSe2 shows great promise to achieve high power density for flexible thermoelectrics. |
| first_indexed | 2024-04-12T13:34:30Z |
| format | Article |
| id | doaj.art-45737674e8da4d6f815375cc4b9091f8 |
| institution | Directory Open Access Journal |
| issn | 2198-3844 |
| language | English |
| last_indexed | 2024-04-12T13:34:30Z |
| publishDate | 2022-10-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj.art-45737674e8da4d6f815375cc4b9091f82022-12-22T03:31:04ZengWileyAdvanced Science2198-38442022-10-01929n/an/a10.1002/advs.202203436Plastic/Ductile Bulk 2D van der Waals Single‐Crystalline SnSe2 for Flexible ThermoelectricsTingting Deng0Zhiqiang Gao1Pengfei Qiu2Tian‐Ran Wei3Jie Xiao4Genshui Wang5Lidong Chen6Xun Shi7School of Chemistry and Materials Science Hangzhou Institute for Advanced Study University of Chinese Academy of Sciences Hangzhou 310024 ChinaState Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 ChinaSchool of Chemistry and Materials Science Hangzhou Institute for Advanced Study University of Chinese Academy of Sciences Hangzhou 310024 ChinaState Key Laboratory of Metal Matrix Composites School of Materials Science and Engineering Shanghai Jiao Tong University Shanghai 200240 ChinaState Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 ChinaSchool of Chemistry and Materials Science Hangzhou Institute for Advanced Study University of Chinese Academy of Sciences Hangzhou 310024 ChinaState Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 ChinaState Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 ChinaAbstract The recently discovered ductile/plastic inorganic semiconductors pave a new avenue toward flexible thermoelectrics. However, the power factors of current ductile/plastic inorganic semiconductors are usually low (below 5 µW cm−1 K−2) as compared with classic brittle inorganic thermoelectric materials, which greatly limit the electrical output power for flexible thermoelectrics. Here, large plasticity and high power factor in bulk two‐dimensional van der Waals (2D vdW) single‐crystalline SnSe2 are reported. SnSe2 crystals exhibit large plastic strains at room temperature and they can be morphed into various shapes without cracking, which is well captured by the inherent large deformability factor. As a semiconductor, the electrical transport properties of SnSe2 can be readily tuned in a wide range by doping a tiny amount of halogen elements. A high power factor of 10.8 µW cm−1 K−2 at 375 K along the in‐plane direction is achieved in plastic single‐crystalline Br‐doped SnSe2, which is the highest value among the reported flexible inorganic and organic thermoelectric materials. Combining the good plasticity, excellent power factors, as well as low‐cost and nontoxic elements, bulk 2D vdW single‐crystalline SnSe2 shows great promise to achieve high power density for flexible thermoelectrics.https://doi.org/10.1002/advs.202203436flexible thermoelectricsplastic/ductile semiconductorssingle‐crystallineSnSe2 |
| spellingShingle | Tingting Deng Zhiqiang Gao Pengfei Qiu Tian‐Ran Wei Jie Xiao Genshui Wang Lidong Chen Xun Shi Plastic/Ductile Bulk 2D van der Waals Single‐Crystalline SnSe2 for Flexible Thermoelectrics Advanced Science flexible thermoelectrics plastic/ductile semiconductors single‐crystalline SnSe2 |
| title | Plastic/Ductile Bulk 2D van der Waals Single‐Crystalline SnSe2 for Flexible Thermoelectrics |
| title_full | Plastic/Ductile Bulk 2D van der Waals Single‐Crystalline SnSe2 for Flexible Thermoelectrics |
| title_fullStr | Plastic/Ductile Bulk 2D van der Waals Single‐Crystalline SnSe2 for Flexible Thermoelectrics |
| title_full_unstemmed | Plastic/Ductile Bulk 2D van der Waals Single‐Crystalline SnSe2 for Flexible Thermoelectrics |
| title_short | Plastic/Ductile Bulk 2D van der Waals Single‐Crystalline SnSe2 for Flexible Thermoelectrics |
| title_sort | plastic ductile bulk 2d van der waals single crystalline snse2 for flexible thermoelectrics |
| topic | flexible thermoelectrics plastic/ductile semiconductors single‐crystalline SnSe2 |
| url | https://doi.org/10.1002/advs.202203436 |
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