Enhancement of thermoelectric figure of merit in β -Zn4Sb3 by indium doping control

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/104592

Title:	Enhancement of thermoelectric figure of merit in β -Zn4Sb3 by indium doping control
Authors:	楊仲準;Wei, Pai-Chun;Yang, Chun-Chuen;Chen, Jeng-Lung;Sankar, Raman;Chen, Chi-Liang;Hsu, Chia-Hao;Chang, Chung-Chieh;Chen, Cheng-Lung;Dong, Chung-Li;Chou, Fang-Cheng;Chen, Kuei-Hsien;Wu, Maw-Kuen;Chen, Yang-Yuan
Contributors:	理學院物理學系
Keywords:	Applied physics;Bridgman method;Crystal growth;Crystal structure;Diffraction;Doping;Electrical resistivity;Figure of merit;High temperature;Indium;Phase composition;Seebeck effect;Synchrotron radiation;Thermal conductivity;Thermoelectric materials;Thermoelectricity;X-ray diffraction;Zinc antimonides
Date:	2015-09-21
Issue Date:	2026-04-23 11:53:18 (UTC+8)
Publisher:	American Institute of Physics;Melville: American Institute of Physics
Abstract:	摘要： We demonstrate the control of phase composition in Bridgman-grown β-Zn4Sb3 crystals by indium doping, an effective way to overcome the difficulty of growing very pure β-Zn4Sb3 thermoelectric material. The crystal structures are characterized by Rietveld refinement with synchrotron X-ray diffraction data. The results show an anisotropic lattice expansion in In-doped β-Zn4Sb3 wherein the zinc atoms are partially substituted by indium ones at 36f site of R-3c symmetry. Through the elimination of ZnSb phase, all the three individual thermoelectric properties are simultaneously improved, i.e., increasing electrical conductivity and Seebeck coefficient while reducing thermal conductivity. Under an optimal In concentration (x = 0.05), pure phase β-Zn4Sb3 crystal can be obtained, which possesses a high figure of merit (ZT) of 1.4 at 700 K. 出版者： Melville: American Institute of Physics 出版日期： 2015-09-21 出處： Applied physics letters, 2015-09, Vol.107 (12) 資源來源： AIP Journals (American Institute of Physics) 版權： 2015 AIP Publishing LLC. 識別號： ISSN: 0003-6951 識別號： EISSN: 1077-3118 識別號： DOI: 10.1063/1.4931361
Appears in Collections:	[Department of Physics] journal & Dissertation

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