Realization of high thermoelectric performance in solution-synthesized porous Zn and Ga codoped SnSe nanosheets
文献类型：期刊论文
| 作者 | Li, Shuang2 ; Hou, Yunxiang2; Li, Di3; Zou, Bo2; Zhang, Qingtang2; Cao, Yang1; Tang, Guodong2
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| 刊名 | JOURNAL OF MATERIALS CHEMISTRY A
 |
| 出版日期 | 2022-06-14 |
| 卷号 | 10 |
| ISSN号 | 2050-7488 |
| DOI | 10.1039/d2ta03079a |
| 通讯作者 | Tang, Guodong(tangguodong@njust.edu.cn) |
| 英文摘要 | SnSe is considered one of the most intriguing new thermoelectric materials. Polycrystalline SnSe offers a wide range of thermoelectric applications due to its facile synthetic processing and machinability. Herein, we have achieved a high average ZT of 0.8 as well as a high peak ZT of 1.86 in solution-synthesized porous Zn and Ga codoped SnSe nanosheets, generating a maximum energy conversion efficiency of 13.3%. High-density micro/nanopores are induced in the SnSe matrix, which are more effective for scattering phonons and reducing the thermal conductivity. The high density of micro/nanopores, nanosheet structure and dislocations contribute to an ultralow lattice thermal conductivity (0.157 W m(-1) K-1 at 873 K). Meanwhile, Ga incorporation can induce band convergence and create resonance levels, producing a large Seebeck coefficient. Ga and Zn codoping contributes to a sharp increase in carrier concentration and an obviously increased electrical conductivity. The enhanced Seebeck coefficient and increased carrier concentration help in achieving a significant enhancement of the power factor over a wide temperature range in the porous Zn and Ga codoped SnSe nanosheets. Consequently, high thermoelectric performance is realized over a wide temperature range via the decoupling of electron-phonon transport in SnSe. This work opens up a great opportunity for designing prospective materials for thermoelectric applications with the aid of the solution synthesis route. |
| WOS关键词 | ULTRAHIGH POWER-FACTOR ; POLYCRYSTALLINE SNSE ; THERMAL-CONDUCTIVITY ; CHALCOGENIDES ; FIGURE ; MERIT |
| 资助项目 | National Natural Science Foundation of China[52071182] ; Qinglan Project of the Young and Middle-aged Academic Leader of Jiangsu Province ; Fundamental Research Funds for the Central Universities[30921011107] |
| WOS研究方向 | Chemistry ; Energy & Fuels ; Materials Science |
| 语种 | 英语 |
| 出版者 | ROYAL SOC CHEMISTRY |
| WOS记录号 | WOS:000802008500001 |
| 资助机构 | National Natural Science Foundation of China ; Qinglan Project of the Young and Middle-aged Academic Leader of Jiangsu Province ; Fundamental Research Funds for the Central Universities |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/131105]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Tang, Guodong |
| 作者单位 | 1.Nanjing Univ Sci & Technol, Sch Mat Sci & Engn, Nanjing 210094, Peoples R China 2.Nanjing Univ Sci & Technol, Sch Mat Sci & Engn, MIIT Key Lab Adv Metall & Intermetall Mat Technol, Nanjing 210094, Peoples R China 3.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Shuang,Hou, Yunxiang,Li, Di,et al. Realization of high thermoelectric performance in solution-synthesized porous Zn and Ga codoped SnSe nanosheets[J]. JOURNAL OF MATERIALS CHEMISTRY A,2022,10. |
| APA | Li, Shuang.,Hou, Yunxiang.,Li, Di.,Zou, Bo.,Zhang, Qingtang.,...&Tang, Guodong.(2022).Realization of high thermoelectric performance in solution-synthesized porous Zn and Ga codoped SnSe nanosheets.JOURNAL OF MATERIALS CHEMISTRY A,10. |
| MLA | Li, Shuang,et al."Realization of high thermoelectric performance in solution-synthesized porous Zn and Ga codoped SnSe nanosheets".JOURNAL OF MATERIALS CHEMISTRY A 10(2022). |
入库方式： OAI收割
来源：合肥物质科学研究院
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