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Title: Thermoelectric transport in surface- and antimony-doped bismuth telluride nanoplates

Abstract

We report the in-plane thermoelectric properties of suspended (Bi1–xSbx)2Te3 nanoplates with x ranging from 0.07 to 0.95 and thicknesses ranging from 9 to 42 nm. The results presented here reveal a trend of increasing p-type behavior with increasing antimony concentration, and a maximum Seebeck coefficient and thermoelectric figure of merit at x ~ 0.5. We additionally tuned extrinsic doping of the surface using a tetrafluoro-tetracyanoquinodimethane (F4-TCNQ) coating. As a result, the lattice thermal conductivity is found to be below that for undoped ultrathin Bi2Te3 nanoplates of comparable thickness and in the range of 0.2–0.7 W m–1 K–1 at room temperature.

Authors:
ORCiD logo; ; ; ; ORCiD logo
Publication Date:
Research Org.:
Univ. of Connecticut, Storrs, CT (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1272641
Alternate Identifier(s):
OSTI ID: 1329710; OSTI ID: 1420529
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Published Article
Journal Name:
APL Materials
Additional Journal Information:
Journal Name: APL Materials Journal Volume: 4 Journal Issue: 10; Journal ID: ISSN 2166-532X
Publisher:
American Institute of Physics
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; 36 MATERIALS SCIENCE; 30 DIRECT ENERGY CONVERSION; antimony; doping; thermoelectric effects; thermal conductivity; surface conductivity

Citation Formats

Pettes, Michael Thompson, Kim, Jaehyun, Wu, Wei, Bustillo, Karen C., and Shi, Li. Thermoelectric transport in surface- and antimony-doped bismuth telluride nanoplates. United States: N. p., 2016. Web. doi:10.1063/1.4955400.
Pettes, Michael Thompson, Kim, Jaehyun, Wu, Wei, Bustillo, Karen C., & Shi, Li. Thermoelectric transport in surface- and antimony-doped bismuth telluride nanoplates. United States. https://doi.org/10.1063/1.4955400
Pettes, Michael Thompson, Kim, Jaehyun, Wu, Wei, Bustillo, Karen C., and Shi, Li. Sat . "Thermoelectric transport in surface- and antimony-doped bismuth telluride nanoplates". United States. https://doi.org/10.1063/1.4955400.
@article{osti_1272641,
title = {Thermoelectric transport in surface- and antimony-doped bismuth telluride nanoplates},
author = {Pettes, Michael Thompson and Kim, Jaehyun and Wu, Wei and Bustillo, Karen C. and Shi, Li},
abstractNote = {We report the in-plane thermoelectric properties of suspended (Bi1–xSbx)2Te3 nanoplates with x ranging from 0.07 to 0.95 and thicknesses ranging from 9 to 42 nm. The results presented here reveal a trend of increasing p-type behavior with increasing antimony concentration, and a maximum Seebeck coefficient and thermoelectric figure of merit at x ~ 0.5. We additionally tuned extrinsic doping of the surface using a tetrafluoro-tetracyanoquinodimethane (F4-TCNQ) coating. As a result, the lattice thermal conductivity is found to be below that for undoped ultrathin Bi2Te3 nanoplates of comparable thickness and in the range of 0.2–0.7 W m–1 K–1 at room temperature.},
doi = {10.1063/1.4955400},
journal = {APL Materials},
number = 10,
volume = 4,
place = {United States},
year = {Sat Oct 01 00:00:00 EDT 2016},
month = {Sat Oct 01 00:00:00 EDT 2016}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1063/1.4955400

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Cited by: 44 works
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