title: Co-precipitation synthesis of nanostructured Cu3SbSe4 and its Sn-doped sample with high thermoelectric performance.
abstract: Large-scale fabrication of nanostructured Cu3SbSe4 and its Sn-doped sample Cu3Sb0.98Sn0.02Se4 through a low-temperature co-precipitation route is reported. The effects of hot-pressing temperatures, time and Sn doping on the thermoelectric properties of Cu3SbSe4 are explored. The maximum figure of merit ZTmax obtained here reaches 0.62 for the un-doped Cu3SbSe4, which is three times as large as that of Cu3SbSe4 synthesized by the fusion method. Due to the ameliorated power factor by optimized carrier concentration and the reduced lattice thermal conductivity by enhanced phonon scattering at grain interfaces, Sn doping leads to an improvement of thermoelectric performance as compared to Cu3SbSe4. The maximum ZT for Cu3Sb0.98Sn0.02Se4 is 1.05 in this work, which is 50% larger than the largest value reported.
authors.affiliation: Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, 230031 Hefei, P. R. China. lidi@issp.ac.cn xyqin@issp.ac.cn.
authors.forename: Di
authors.initials: D
authors.lastname: Li
authors.forename: Rui
authors.initials: R
authors.lastname: Li
authors.forename: Xiao-Ying
authors.initials: XY
authors.lastname: Qin
authors.forename: Chun-Jun
authors.initials: CJ
authors.lastname: Song
authors.forename: Hong-Xing
authors.initials: HX
authors.lastname: Xin
authors.forename: Ling
authors.initials: L
authors.lastname: Wang
authors.forename: Jian
authors.initials: J
authors.lastname: Zhang
authors.forename: Guang-lei
authors.initials: GL
authors.lastname: Guo
authors.forename: Tian-Hua
authors.initials: TH
authors.lastname: Zou
authors.forename: Yong-Fei
authors.initials: YF
authors.lastname: Liu
authors.forename: Xiao-Guang
authors.initials: XG
authors.lastname: Zhu