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Title: Contrasting role of antimony and bismuth dopants on the thermoelectric performance of lead selenide

Journal Article · · Nature Communications
DOI:https://doi.org/10.1038/ncomms4640· OSTI ID:1355912
 [1];  [1];  [1];  [2];  [3];  [1];  [2];  [1];  [4]
  1. Northwestern Univ., Evanston, IL (United States)
  2. Univ. of Michigan, Ann Arbor, MI (United States)
  3. Argonne National Lab. (ANL), Argonne, IL (United States)
  4. 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 Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); Materials Sciences and Engineering Division; National Science Foundation (NSF); W.M. Keck Foundation; Northwestern University
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1355912
Journal Information:
Nature Communications, Vol. 5; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 91 works
Citation information provided by
Web of Science

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Cited By (16)

High Thermoelectric Performance in Supersaturated Solid Solutions and Nanostructured n-Type PbTe-GeTe journal June 2018
Subtle Roles of Sb and S in Regulating the Thermoelectric Properties of N-Type PbTe to High Performance journal May 2017
High Thermoelectric Performance in PbSe–NaSbSe 2 Alloys from Valence Band Convergence and Low Thermal Conductivity journal July 2019
Review of Thermoelectric Materials book January 2016
Carrier tuning and multiple phonon scattering induced high thermoelectric performance in n-type Sb-doped PbTe alloys journal March 2019
Enhancing Thermoelectric Performance of PbSe by Se Vacancies journal February 2018
Vacancy-induced dislocations within grains for high-performance PbSe thermoelectrics journal January 2017
Electrical and thermal transport properties of Pb 1−x Sn x Se solid solution thermoelectric materials journal January 2015
Synergistically optimizing interdependent thermoelectric parameters of n-type PbSe through alloying CdSe journal January 2019
High thermoelectric performance in complex phosphides enabled by stereochemically active lone pair electrons journal January 2018
High thermoelectric performance of Ag doped SnTe polycrystalline bulks via the synergistic manipulation of electrical and thermal transport journal January 2019
GeSe monolayer semiconductor with tunable direct band gap and small carrier effective mass journal September 2015
Enhancing average ZT in pristine PbSe by over-stoichiometric Pb addition journal October 2016
Thermoelectric power generation: from new materials to devices
  • Tan, Gangjian; Ohta, Michihiro; Kanatzidis, Mercouri G.
  • Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 377, Issue 2152 https://doi.org/10.1098/rsta.2018.0450
journal July 2019
Review of Thermoelectric Materials book August 2009
Decreasing the Effective Thermal Conductivity in Glass Supported Thermoelectric Layers journal March 2016

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