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Title: Effect of selenium deficiency on the thermoelectric properties of n -type In 4 Se 3 - x compounds

Abstract

Thermoelectric properties of dense bulk polycrystalline In 4Se 3–x ( x = 0, 0.25, 0.5, 0.65, and 0.8) compounds are investigated. A peak dimensionless thermoelectric figure of merit ( ZT) of about 1 is achieved for x = 0.65 and 0.8. The peak ZT is about 50% higher than the previously reported highest value for polycrystalline In 4Se 3–x compounds. Our In 4Se 3–x samples were prepared by ball milling and hot pressing. We show that it is possible to effectively control the electrical conductivity and thermal conductivity by controlling selenium (Se) deficiency x. Here, the ZT enhancement is mainly attributed to the thermal conductivity reduction due to the increased phonon scattering by Se deficiency, defects, and nanoscale inclusions in the ball-milled and hot-pressed dense bulk In 4Se 3–x samples.

Authors:
 [1];  [1];  [1];  [1];  [2];  [2];  [1]
  1. Boston College, Chestnut Hill, MA (United States)
  2. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Publication Date:
Research Org.:
Energy Frontier Research Centers (EFRC), Washington, D.C. (United States). Solid-State Solar-Thermal Energy Conversion Center (S3TEC); Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1386847
Alternate Identifier(s):
OSTI ID: 1099965
Grant/Contract Number:  
SC0001299; FG02-09ER46577
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review. B, Condensed Matter and Materials Physics
Additional Journal Information:
Journal Volume: 83; Journal Issue: 11; Related Information: S3TEC partners with Massachusetts Institute of Technology (lead); Boston College; Oak Ridge National Laboratory; Rensselaer Polytechnic Institute; Journal ID: ISSN 1098-0121
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; solar (photovoltaic); solar (thermal); solid state lighting; phonons; thermal conductivity; thermoelectric; defects; mechanical behavior; charge transport; spin dynamics; materials and chemistry by design; optics; synthesis (novel materials); synthesis (self-assembly); synthesis (scalable processing)

Citation Formats

Zhu, G. H., Lan, Y. C., Wang, H., Joshi, G., Hao, Q., Chen, G., and Ren, Z. F. Effect of selenium deficiency on the thermoelectric properties of n-type In4Se3-x compounds. United States: N. p., 2011. Web. doi:10.1103/PhysRevB.83.115201.
Zhu, G. H., Lan, Y. C., Wang, H., Joshi, G., Hao, Q., Chen, G., & Ren, Z. F. Effect of selenium deficiency on the thermoelectric properties of n-type In4Se3-x compounds. United States. doi:10.1103/PhysRevB.83.115201.
Zhu, G. H., Lan, Y. C., Wang, H., Joshi, G., Hao, Q., Chen, G., and Ren, Z. F. Fri . "Effect of selenium deficiency on the thermoelectric properties of n-type In4Se3-x compounds". United States. doi:10.1103/PhysRevB.83.115201. https://www.osti.gov/servlets/purl/1386847.
@article{osti_1386847,
title = {Effect of selenium deficiency on the thermoelectric properties of n-type In4Se3-x compounds},
author = {Zhu, G. H. and Lan, Y. C. and Wang, H. and Joshi, G. and Hao, Q. and Chen, G. and Ren, Z. F.},
abstractNote = {Thermoelectric properties of dense bulk polycrystalline In4Se3–x (x = 0, 0.25, 0.5, 0.65, and 0.8) compounds are investigated. A peak dimensionless thermoelectric figure of merit (ZT) of about 1 is achieved for x = 0.65 and 0.8. The peak ZT is about 50% higher than the previously reported highest value for polycrystalline In4Se3–x compounds. Our In4Se3–x samples were prepared by ball milling and hot pressing. We show that it is possible to effectively control the electrical conductivity and thermal conductivity by controlling selenium (Se) deficiency x. Here, the ZT enhancement is mainly attributed to the thermal conductivity reduction due to the increased phonon scattering by Se deficiency, defects, and nanoscale inclusions in the ball-milled and hot-pressed dense bulk In4Se3–x samples.},
doi = {10.1103/PhysRevB.83.115201},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
issn = {1098-0121},
number = 11,
volume = 83,
place = {United States},
year = {2011},
month = {3}
}

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Works referenced in this record:

Materials for thermoelectric energy conversion
journal, April 1988


Cubic AgPbmSbTe2+m: Bulk Thermoelectric Materials with High Figure of Merit
journal, February 2004


New Directions for Low-Dimensional Thermoelectric Materials
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  • DOI: 10.1002/adma.200600527

High-Thermoelectric Performance of Nanostructured Bismuth Antimony Telluride Bulk Alloys
journal, May 2008