Influence of Y3+ doping on the high-temperature transport mechanism and thermoelectric response of misfit-layered Ca3Co4O9
文献类型：期刊论文
| 作者 | Wang, Yang2,3; Sui, Yu1,2; Cheng, Jinguang2; Wang, Xianjie2; Su, Wenhui1,2; Fan, Hongjin3 |
| 刊名 | APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
 |
| 出版日期 | 2010-05-01 |
| 卷号 | 99期号:2页码:451-458 |
| ISSN号 | 0947-8396 |
| DOI | 10.1007/s00339-010-5543-1 |
| 通讯作者 | Sui, Yu(suiyu@hit.edu.cn) |
| 英文摘要 | The high-temperature transport and thermoelectric characteristics of Ca3-x Y (x) Co4O9 (x=0-0.75) series were studied up to 1000 K. The results reveal that the substitution of Y3+ for Ca2+ not only increases resistivity but also gradually alters the transport mechanism. The localization of carriers narrows bandwidth, which induces the evolution of the system from metal to variable-range hopping semiconductor and then to thermally activated semiconductor. The increasing thermopower with doping originates from the reduction of carrier concentration along with enhanced electronic correlations. Thermoelectric figure of merit ZT of Ca3Co4O9 system is improved by Y doping. However, the optimal thermoelectric performance is found to only exist at the critical doping level where doping-induced metal-semiconductor transition occurs. This result suggests an intrinsic correlation between transport mechanism and thermoelectric response in this system. |
| 资助项目 | National Natural Science Foundation of China[50672019] ; National Natural Science Foundation of China[10804024] ; Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry |
| WOS研究方向 | Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000277784300016 |
| 出版者 | SPRINGER |
| 资助机构 | National Natural Science Foundation of China ; Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry |
| 源URL | [http://ir.imr.ac.cn/handle/321006/99627]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Sui, Yu |
| 作者单位 | 1.Acad Sinica, Int Ctr Mat Phys, Shenyang 110015, Peoples R China 2.Harbin Inst Technol, Dept Phys, Ctr Condensed Matter Sci & Technol, Harbin 150001, Peoples R China 3.Nanyang Technol Univ, Sch Phys & Math Sci, Div Phys & Appl Phys, Singapore 637371, Singapore |
| 推荐引用方式 GB/T 7714 | Wang, Yang,Sui, Yu,Cheng, Jinguang,et al. Influence of Y3+ doping on the high-temperature transport mechanism and thermoelectric response of misfit-layered Ca3Co4O9[J]. APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING,2010,99(2):451-458. |
| APA | Wang, Yang,Sui, Yu,Cheng, Jinguang,Wang, Xianjie,Su, Wenhui,&Fan, Hongjin.(2010).Influence of Y3+ doping on the high-temperature transport mechanism and thermoelectric response of misfit-layered Ca3Co4O9.APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING,99(2),451-458. |
| MLA | Wang, Yang,et al."Influence of Y3+ doping on the high-temperature transport mechanism and thermoelectric response of misfit-layered Ca3Co4O9".APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING 99.2(2010):451-458. |
入库方式： OAI收割
来源：金属研究所
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