[10a-N406-1~10] 9.4 Thermoelectric conversion

[10a-N406-6] Growth and thermoelectric properties of II-IV-V₂ chalcopyrite compound ZnSnSb₂

〇Yusuke Shigeeda¹, Akira Nagaoka¹, Kenji Yoshino¹, Kensuke Nishioka¹ (1.Univ. Miyazaki)

Keywords:thermoelectric conversion, chalcopyrite compound, ZnSnSb2

The II-IV-V₂ chalcopyrite compound ZnSnSb₂, which has pseudo-cubic structure with lattice parameter ratio c/a is nearly equal 2.00. When the lattice constant ratio, c/a, of pseudo-cubic structure is 2.00, the power factor (PF) is increase from the symmetry of the structure. We carried out growth of thermoelectric (TE) material ZnSnSb₂, and investigated TE properties of ZnSnSb₂. The growth mechanism of ZnSnSb₂ show the peritectic reaction by supply Sn-flux. The TE performance at 300 ℃ is that the resistivity, Seebeck coefficient and thermal conductivity are 1.17 mΩ·cm, 51.3 μV/K and 1.22 mW/K.