Thermoelectric properties of non-stoichiometric Cu2+xSn1-xS3 compounds
文献类型：期刊论文
| 作者 | Deng, Tingting; Qiu, Pengfei; Song, Qingfeng; Chen, Hongyi; Wei, Tian-Ran; Xi, Lili; Shi, Xun; Chen, Lidong |
| 刊名 | JOURNAL OF APPLIED PHYSICS
 |
| 出版日期 | 2019-08-28 |
| 卷号 | 126期号:8 |
| ISSN号 | 0021-8979 |
| DOI | 10.1063/1.5115195 |
| 文献子类 | Article |
| 英文摘要 | Diamondlike compound Cu2SnS3 has attracted great attention recently due to its excellent thermoelectric performance and the features of being eco-friendly and low cost. However, the underlying mechanism for its good electrical transports under high carrier concentration range is still not clear. In this work, we synthesized a series of Cu2+xSn1-xS3 (x=0-0.08) samples. These nonstoichiometric Cu2+xSn1-xS3 samples are polymorph simultaneously crystalizing in the monoclinic, tetragonal, and cubic structures. The characterization on the electrical transports and the analysis on the band structure reveal that the large density-of-states effective mass, high Seebeck coefficient, and high mobility under a high carrier concentration in the Cu2+xSn1-xS3 system are originated from the existence of multiple bands near the edge of the valence band. Likewise, the polymorphic structure has little influence on the electrical transports. A maximum power factor of 12.6 mu Wcm(-1)K(-2) at 700K has been obtained for the nonstoichiometric Cu2.08Sn0.92S3. Combining the low lattice thermal conductivity of these samples, Cu2.08Sn0.92S3 shows a peak dimensionless figure of merit of 0.5 at 700K. This work is helpful for guiding the future optimization of thermoelectric performance on Cu2SnS3. |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| 出版者 | AMER INST PHYSICS |
| 源URL | [http://ir.sic.ac.cn/handle/331005/26890]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 推荐引用方式 GB/T 7714 | Deng, Tingting,Qiu, Pengfei,Song, Qingfeng,et al. Thermoelectric properties of non-stoichiometric Cu2+xSn1-xS3 compounds[J]. JOURNAL OF APPLIED PHYSICS,2019,126(8). |
| APA | Deng, Tingting.,Qiu, Pengfei.,Song, Qingfeng.,Chen, Hongyi.,Wei, Tian-Ran.,...&Chen, Lidong.(2019).Thermoelectric properties of non-stoichiometric Cu2+xSn1-xS3 compounds.JOURNAL OF APPLIED PHYSICS,126(8). |
| MLA | Deng, Tingting,et al."Thermoelectric properties of non-stoichiometric Cu2+xSn1-xS3 compounds".JOURNAL OF APPLIED PHYSICS 126.8(2019). |
入库方式： OAI收割
来源：上海硅酸盐研究所
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