Thermoelectric performance of polycrystalline Sn1-xCuxSe (x = 0–0.03) prepared by high pressure method |
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| Affiliation: | 1. Guangxi Key Laboratory of Information Materials, Guangxi Collaborative Innovation Center of Structure and Property for New Energy and Material, School of Material Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, PR China;2. School of Mechanical and Electronic Engineering, Guilin University of Electronic Technology, Guilin 541004, PR China;3. Institute for Frontier Materials, Deakin University, VIC 3216, Australia;4. College of Physics, Chongqing University, Chongqing 401331, PR China;1. State Key Laboratory of Environment-friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621010, PR China;2. College of Physics, Sichuan University, Chengdu 610065, PR China;3. Department of Thermal Science and Energy Engineering, University of Science and Technology of China, Hefei, Anhui 230027, PR China;1. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China;2. Department of Physics, University of Michigan, Ann Arbor, MI 48109, USA;1. Shenzhen Key Laboratory of Advanced Thin Films and Applications, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China;2. College of Electronics and Information Engineering, Shenzhen University, Shenzhen 518060, China |
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| Abstract: | P-type Sn1-xCuxSe (x = 0–0.03) polycrystal was prepared through melting synthesis and high pressure (6.0 GPa) sintering (HPS) method. The composition and microstructure of the samples was analyzed, and the thermoelectric transport properties were investigated in the temperature range of 303 K–823 K. The results indicate that the electrical conductivity increases as Cu content increases. An observable improvement is found for the Seebeck coefficient when x is 0.01. In addition, the total thermal conductivities (κtot) of all samples decrease with rising temperature, and reach its minimum values at 773 K. As a result, the maximum power factor (PF) and ZTmax value are 378 μW m?1 K?2 and 0.79 for Sn0.97Cu0.03Se at 823 K, respectively. |
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| Keywords: | SnSe High pressure sintering Thermoelectric transport performances |
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