Contrasting role of antimony and bismuth dopants on the thermoelectric performance of lead selenide
- Northwestern Univ., Evanston, IL (United States)
- Univ. of Michigan, Ann Arbor, MI (United States)
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Northwestern Univ., Evanston, IL (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
Increasing the conversion efficiency of thermoelectric materials is a key scientific driver behind a worldwide effort to enable heat to electricity power generation at competitive cost. Here we report an increased performance for antimony-doped lead selenide with a thermoelectric figure of merit of ~1.5 at 800 K. This is in sharp contrast to bismuth doped lead selenide, which reaches a figure of merit of <1. Substituting antimony or bismuth for lead achieves maximum power factors between ~23–27μW cm–1 K–2 at temperatures above 400 K. The addition of small amounts (~0.25 mol%) of antimony generates extensive nanoscale precipitates, whereas comparable amounts of bismuth results in very few or no precipitates. The antimony-rich precipitates are endotaxial in lead selenide, and appear remarkably effective in reducing the lattice thermal conductivity. As a result, the corresponding bismuth-containing samples exhibit smaller reduction in lattice thermal conductivity.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- Materials Sciences and Engineering Division; National Science Foundation (NSF); Northwestern University; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); W.M. Keck Foundation
- Grant/Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1355912
- Alternate ID(s):
- OSTI ID: 1161836
OSTI ID: 1384673
- Journal Information:
- Nature Communications, Journal Name: Nature Communications Vol. 5; ISSN 2041-1723
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Thermoelectric properties of antimony selenide hexagonal nanotubes
Effect of magnetic field on the thermoelectric properties of solid solutions of antimony (9 at. %) in bismuth doped with tin
Non-equilibrium processing leads to record high thermoelectric figure of merit in PbTe–SrTe
Journal Article
·
Sun Dec 06 19:00:00 EST 2020
· Nanotechnology
·
OSTI ID:1890971
Effect of magnetic field on the thermoelectric properties of solid solutions of antimony (9 at. %) in bismuth doped with tin
Journal Article
·
Tue Sep 01 00:00:00 EDT 1987
· Inorg. Mater. (Engl. Transl.); (United States)
·
OSTI ID:5895816
Non-equilibrium processing leads to record high thermoelectric figure of merit in PbTe–SrTe
Journal Article
·
Mon Jul 25 20:00:00 EDT 2016
· Nature Communications
·
OSTI ID:1326596