| Roles of Anion Sites in High-Performance GeTe Thermoelectrics | |
| Li, Meng1,2; Xu, Sheng-Duo1; Hong, Min3; Lyu, Wan-Yu2,3; Wang, Yuan1; Dargusch, Matthew1; Zou, Jin1,4; Cheng, Hui-Ming5,6; Chen, Zhi-Gang2 | |
| 通讯作者 | Chen, Zhi-Gang(zhigang.chen@qut.edu.au) |
| 2022-09-22 | |
| 发表期刊 | ADVANCED FUNCTIONAL MATERIALS
 |
| ISSN | 1616-301X |
| 页码 | 8 |
| 摘要 | Cationic doping is mainly used to improve the performance of rocksalt-structured GeTe thermoelectric materials. However, its counterpart anionic doping is scarcely facilitated. Here, a comprehensive discussion is provided on doping at the anion site of rocksalt-structured thermoelectric materials, surrounding its influence on bonding mechanisms, carrier and phonon transport characteristics, and thermoelectric figure-of-merit. To verify the viewpoint, a modified flux-assist method is adopted to synthesize anionic Iodine (I) doped GeTe samples, which show comparably optimized electrical and thermal properties with that of cationic Antimony (Sb) or Bismuth (Bi) doped GeTe samples. Further combining cationic Bi and anionic I co-doping, an enhanced figure-of-merit from 0.8 in pristine GeTe to 2.5 at 675 K can be realized in 8% (Bi and I) co-doped GeTe, which corresponds to a maximum heat-to-electricity conversion efficiency of 14.6% under a temperature difference of 430 K. This work rationalizes the influence of anionic doping on the electrical and thermal properties of the rocksalt-structured materials, which serves as an effective yet previously neglected strategy toward high-performance GeTe thermoelectrics. |
| 关键词 | anionic dopants conversion efficiencies figure-of-merit GeTe thermoelectrics |
| 资助者 | Australian Research Council ; QUT capacity building professor program ; HBIS-UQ Innovation Centre for Sustainable Steel (ICSS) project |
| DOI | 10.1002/adfm.202208579 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 资助项目 | Australian Research Council ; QUT capacity building professor program ; HBIS-UQ Innovation Centre for Sustainable Steel (ICSS) project |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| WOS类目 | Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter |
| WOS记录号 | WOS:000858002000001 |
| 出版者 | WILEY-V C H VERLAG GMBH |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.imr.ac.cn/handle/321006/175449 |
| 专题 | 中国科学院金属研究所 |
| 通讯作者 | Chen, Zhi-Gang |
| 作者单位 | 1.Univ Queensland, Sch Mech & Min Engn, Brisbane, Qld 4072, Australia 2.Queensland Univ Technol, Sch Chem & Phys, Brisbane, Qld 4072, Australia 3.Univ Southern Queensland, Ctr Future Mat, Springfield Cent, Qld 4300, Australia 4.Univ Queensland, Ctr Microscopy & Microanal, Brisbane, Qld 4072, Australia 5.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 6.Chinese Acad Sci, Shenzhen Inst Adv Technol, Shenzhen 518055, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Meng,Xu, Sheng-Duo,Hong, Min,et al. Roles of Anion Sites in High-Performance GeTe Thermoelectrics[J]. ADVANCED FUNCTIONAL MATERIALS,2022:8. |
| APA | Li, Meng.,Xu, Sheng-Duo.,Hong, Min.,Lyu, Wan-Yu.,Wang, Yuan.,...&Chen, Zhi-Gang.(2022).Roles of Anion Sites in High-Performance GeTe Thermoelectrics.ADVANCED FUNCTIONAL MATERIALS,8. |
| MLA | Li, Meng,et al."Roles of Anion Sites in High-Performance GeTe Thermoelectrics".ADVANCED FUNCTIONAL MATERIALS (2022):8. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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