1. Electron Poor Materials Research Group
EPMRG

2. Synthesis, Characterizations and Properties of Thermoelectric Zn-Sb-In & “Thermoelectric” (ZnSnSb2)x(InSb)2-2x
Yang Wu

3. Outline Thermoelectric Zn-Sb-In Ternaries
Synthesis explorations of Zn-Sb-In system
Property Characterizations
Solid Solution (ZnSnSb2)1-x(InSb)2x
Metal-Non Metal Transition
Thermoelectric Property

4. Motivation – Thermoelectric b-Zn4Sb3
E – EF (eV)
37 e- for Zn6Sb5
38 e- to be electron precise
Zn5InSb5? Zn In Sb
Electronegativity
1.6
1.7
1.9
Sootsman, J. R.; Chung, D.; Kanatzidis, M. Angewandte Chemie International Edition 2009, 48,  
Haussermann, U.; Mikhaylushkin, A. S. Dalton Trans. 2010, 39,  

5. Synthetic Exploration of Zn-Sb-In System
Region 2:Zn5Sb4In2
Pbcn (No. 60), Z=4
Region 2:Zn9Sb6In2
P (No. 19), Z=8
Metastable
Region 1:Zn4Sb3
Wu, Y.; Lidin, S.; Groy, T. L.; et al. Inorganic Chemistry 2009, 48,  

6. Structural and Phase Relations of Zn5Sb4In2-d & Zn9Sb6In2: I

7. Structural and Phase Relations of Zn5Sb4In2-d & Zn9Sb6In2: II

8. Thermoelectric Property Characterizations for Zn5Sb4In2-δ: I
Wu, Y.; Lidin, S.; Groy, T. L.; et al. Inorganic Chemistry 2009, 48,  

9. Thermoelectric Property Characterizations for Zn5Sb4In2-δ: II

10. Sphalerite-type solid solution
(ZnSnSb2)1-x(InSb)2x + 4Sn

11. Future Work Growth of B crystal in metal melts (Cu, Pt, Ni etc.)
Make SiB3, a reported III-IV compound
Transport property measurements of (ZnSnSb2)1-x(InSb)2x