|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Alloys and Compounds for Thermoelectric and Solar Cell Applications V
||L-19: Synthesis and Thermoelectric Properties of ZnSnSb2 with Chalcopyrite Structure
||Ami Nomura, Ken Kurosaki, Seongho Choi, Yuji Ohishi, Hiroaki Muta, Shinsuke Yamanaka
|On-Site Speaker (Planned)
Our group has discovered that CuGaTe2 with chalcopyrite structure exhibits exceptionally high thermoelectric (TE) figure of merit zT = 1.4 [T. Plirdpring et al., Adv. Mater. 24, 3622 (2012).]. It has been also proved that when the tetragonal lattice parameter ratio (c/a) closet to 2, the valence bands of the chalcopyrite compounds highly degenerate at the band-edge, leading to enhancement of the power factor (PF). Actually, the c/a ratio of CuGaTe2 is close to 2. Since the c/a ratio of ZnSnSb2 with chalcopyrite structure is just 2, ZnSnSb2 is expected to show high PF. However, reports on the TE properties of ZnSnSb2 have been limited because it is hard to synthesize single-phase ZnSnSb2. In the present study, we succeeded to synthesize pure ZnSnSb2 with no impurities by using a Sn flux method. The details of the sample synthesis method and conditions and the TE properties will be presented.
||Planned: Supplemental Proceedings volume