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- Wenlong Mi
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences 1 , 1295 Dingxi Road, Shanghai 200050, China
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- Pengfei Qiu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences 1 , 1295 Dingxi Road, Shanghai 200050, China
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- Tiansong Zhang
- CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences 2 ,1295 Dingxi Road, Shanghai 200050, China
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- Yanhong Lv
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences 1 , 1295 Dingxi Road, Shanghai 200050, China
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- Xun Shi
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences 1 , 1295 Dingxi Road, Shanghai 200050, China
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- Lidong Chen
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences 1 , 1295 Dingxi Road, Shanghai 200050, China
説明
<jats:p>Small amount of Se atoms are used to tune the carrier concentrations (nH) and electrical transport in Ag2Se. Significant enhancements in power factor and thermoelectric figure of merit (zT) are observed in the compositions of Ag2Se1.06 and Ag2Se1.08. The excessive Se atoms do not change the intrinsically electron-conducting character in Ag2Se. The detailed analysis reveals the experiment optimum carrier concentration in Ag2Se is around 5 × 1018 cm−3. We also investigate the temperature of maximum zT and the thermoelectric transport during the first order phase transitions using the recently developed measurement system.</jats:p>
収録刊行物
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- Applied Physics Letters
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Applied Physics Letters 104 (13), 133903-, 2014-03-31
AIP Publishing