We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Enhanced thermoelectric performance of BiCuSO by Pb doping and Se alloying.
- Authors
Yang, Mengxiang; Yang, Manman; Zhang, Yiwen; Su, Taichao; Zhu, Hongyu
- Abstract
Oxysulfides BiCuSO, with a natural superlattice structure, have extremely low thermal conductivity and high Seebeck coefficient. However, the thermoelectric performance of BiCuSO is restricted by its high electrical resistivity resulting from its low carrier concentration and Hall mobility. In this study, BiCuSO was rapidly prepared by one-step high pressure technique. The Pb doping at the Bi site of BiCuSO increases the carrier concentration and decreases the resistivity significantly, which results in an enhanced power factor of ~ 1.0 μWcm−1K−2 at room temperature for Bi0.97Pb0.03CuSO. Meanwhile, substituting Se for S in BiCuSO not only improves the Hall mobility but also decreases the phonon thermal conductivity. Benefiting from the high power factor and low thermal conductivity induced by Pb doping and Se alloying, an enhanced ZT of ~ 0.17 at 673 K is obtained for the sample of Bi0.97Pb0.03CuS0.55Se0.45O.
- Subjects
CARRIER density; THERMAL conductivity; SEEBECK coefficient; ELECTRICAL resistivity; SUPERLATTICES; PHONONS
- Publication
Journal of Materials Science: Materials in Electronics, 2024, Vol 35, Issue 18, p1
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-024-12985-8