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- Title
Electrical Transport Properties of Single Crystalline β-ZnSb Prepared by α-Sn Flux Method.
- Authors
Liu, Hong-xia; Deng, Shu-ping; Shen, Lan-xian; Wang, Jin-song; Cheng, Feng; Deng, Shu-kang
- Abstract
In this study, p-type single crystalline β-ZnSb thermoelectric materials with space group R $$ {\bar{3}} $$ c were successfully prepared using the α-Sn flux method based on the stoichiometric ratios of ZnSbSn ( x = 0, 0.2, 0.4, 0.6). All the crystal sizes were more than 5 mm. The prepared samples had high density and no microcracks. The powder x-ray diffraction patterns showed that all the samples were single phase. All single-crystal samples possessed good electrical transport performance. Compared with polycrystalline β-ZnSb, the carrier mobility of the single crystals were significantly improved. Moreover, excess Zn improved the Seebeck coefficient of the material. The electrical conductivities of the samples were comparable with those obtained by the β-Sn flux method, whereas the Seebeck coefficient declined on the whole and the intrinsic conduction temperature decreased. The power factor of the sample with x = 0.2 is 0.82 × 10 W m K at 635 K, which exhibited the best electrical transport performance.
- Subjects
ELECTRIC properties of single crystals; THERMOELECTRIC materials; MICROCRACKS; ELECTRIC conductivity; SEEBECK coefficient; TEMPERATURE
- Publication
Journal of Electronic Materials, 2017, Vol 46, Issue 5, p2867
- ISSN
0361-5235
- Publication type
Article
- DOI
10.1007/s11664-016-5014-3