Eco-friendly p-type Cu2SnS3thermoelectric material: crystal structure and transport properties.
As a new eco-friendly thermoelectric material, copper tin sulfide (Cu2SnS3) ceramics were experimentally studied by Zn-doping. Excellent electrical transport properties were obtained by virtue of 3-dimensionally conductive network for holes, which are less affected by the coexistence of cubic and tetragonal phases that formed upon Zn subsitition for Sn; a highest power factors ~0.84 mW m-1K-2at 723 K was achieved in the 20% doped sample. Moreover, an ultralow lattice thermal conductivity close to theoretical minimum was observed in these samples, which could be related to the disordering of atoms in the coexisting cubic and tetragonal phases and the interfaces. Thanks to the phonon-glass-electron-crystal features, a maximum ZT ~ 0.58 was obtained at 723 K, which stands among the tops for sulfide thermoelectrics at the same temperature.
Nanjing Tech University, College of Materials Science and Engineering, Nanjing 210009, China.
Yawei
Y
Shen
East China Normal University, Key Laboratory of Polar Materials and Devices, Shanghai 200062, China.
Chao
C
Li
East China Normal University, Key Laboratory of Polar Materials and Devices, Shanghai 200062, China.
Rong
R
Huang
Toyota Physical and Chemical Research Institute, Nagakute 480-1192, Japan.
Ruoming
R
Tian
Nanjing Tech University, College of Materials Science and Engineering, Nanjing 210009, China.
Yang
Y
Ye
Nanjing Tech University, College of Materials Science and Engineering, Nanjing 210009, China.|Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing 210009, China.
Lin
L
Pan
Toyota Physical and Chemical Research Institute, Nagakute 480-1192, Japan.
Kunihito
K
Koumoto
Northwest University, Department of Physics, Xi'an 710069, China.
Ruizhi
R
Zhang
Tsinghua University, School of Materials Science and Engineering, Beijing 100084, China.
Chunlei
C
Wan
Nanjing Tech University, College of Materials Science and Engineering, Nanjing 210009, China.|Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing 210009, China.
Yifeng
Y
Wang
J Am Chem Soc. 2013 Jan 16;135(2):726-32
23256607
Chem Commun (Camb). 2011 Dec 21;47(47):12697-9
22048217
J Phys Condens Matter. 2009 Sep 30;21(39):395502
21832390
Science. 2015 Apr 3;348(6230):109-14
25838382
Adv Mater. 2012 Jul 17;24(27):3622-6
22689017
Dalton Trans. 2014 Nov 28;43(44):16788-94
25286143
Adv Mater. 2014 Jun 18;26(23):3974-8
24677586
Phys Rev Lett. 2012 Apr 20;108(16):166601
22680741