title: Solvothermal synthesis of wire-like SnxSb2Te3+x with an enhanced thermoelectric performance.
abstract: Nanostructured tellurides have attracted increasing attention in thermoelectric applications for waste heat recovery and cooling devices. Here, we report on the synthesis of wire-like SnxSb2Te3+x (x = 0, 0.02 and 0.05) nanoparticles using elemental precursors in EG. The enhanced thermoelectric performance was achieved in alloyed samples due to the increase of carrier population in heavy valence band valleys by incorporating Sn(2+) at the Sb(3+) sublattice, enabling the simultaneous realization of low electrical resistivity along with a high Seebeck coefficient as well as the decline of thermal conductivity. Thus a boosted power factor and low thermal conductivity lead to the highest ZT value of 0.58 at 150 °C in the Sn0.02Sb2Te3.02 sample. Our research offers a general wet-chemical route for the preparation of one-dimensional nanomaterials and probably promotes the practical thermoelectric applications of Sb2Te3-based materials at low temperatures.
authors.affiliation: Guangxi Key Laboratory of Information Material, Guangxi Collaborative Innovation Center of Structure and Property for New Energy and Materials, School of Material Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, P. R. China. miaolei@guet.edu.cn and Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, P. R. China and University of Chinese Academy of Sciences, Beijing 100049, P. R. China.
authors.forename: Heng Quan
authors.initials: HQ
authors.lastname: Yang
authors.affiliation: Guangxi Key Laboratory of Information Material, Guangxi Collaborative Innovation Center of Structure and Property for New Energy and Materials, School of Material Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, P. R. China. miaolei@guet.edu.cn.
authors.forename: Lei
authors.initials: L
authors.lastname: Miao
authors.affiliation: Guangxi Key Laboratory of Information Material, Guangxi Collaborative Innovation Center of Structure and Property for New Energy and Materials, School of Material Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, P. R. China. miaolei@guet.edu.cn.
authors.forename: Cheng Yan
authors.initials: CY
authors.lastname: Liu
authors.affiliation: Guangxi Key Laboratory of Information Material, Guangxi Collaborative Innovation Center of Structure and Property for New Energy and Materials, School of Material Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, P. R. China. miaolei@guet.edu.cn.
authors.forename: Xiao Yang
authors.initials: XY
authors.lastname: Wang
authors.affiliation: Guangxi Key Laboratory of Information Material, Guangxi Collaborative Innovation Center of Structure and Property for New Energy and Materials, School of Material Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, P. R. China. miaolei@guet.edu.cn.
authors.forename: Ying
authors.initials: Y
authors.lastname: Peng
authors.affiliation: College of Physics, Chongqing University, Chongqing 401331, P. R. China.
authors.forename: Ai Juan
authors.initials: AJ
authors.lastname: Zhang
authors.affiliation: College of Physics, Chongqing University, Chongqing 401331, P. R. China.
authors.forename: Xiao Yuan
authors.initials: XY
authors.lastname: Zhou
authors.affiliation: Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, P. R. China.
authors.forename: Guo Yu
authors.initials: GY
authors.lastname: Wang
authors.affiliation: Key Laboratory of Polarized Materials and Devices, Ministry of Education, East China Normal University, Shanghai 200062, P. R. China.
authors.forename: Chao
authors.initials: C
authors.lastname: Li
authors.affiliation: Key Laboratory of Polarized Materials and Devices, Ministry of Education, East China Normal University, Shanghai 200062, P. R. China.
authors.forename: Rong
authors.initials: R
authors.lastname: Huang