Carrier Scattering at Alloy Nanointerfaces Enhances Power Factor in PEDOT:PSS Hybrid Thermoelectrics

Edmond W. Zaia; Ayaskanta Sahu; Preston Zhou; Madeleine P. Gordon; Jason D. Forster; Shaul Aloni; Yi Sheng Liu; Jinghua Guo; Jeffrey J. Urban

doi:10.1021/acs.nanolett.6b01009

Carrier Scattering at Alloy Nanointerfaces Enhances Power Factor in PEDOT:PSS Hybrid Thermoelectrics

Edmond W. Zaia, Ayaskanta Sahu, Preston Zhou, Madeleine P. Gordon, Jason D. Forster, Shaul Aloni, Yi Sheng Liu, Jinghua Guo, Jeffrey J. Urban

Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

This work demonstrates the first method for controlled growth of heterostructures within hybrid organic/inorganic nanocomposite thermoelectrics. Using a facile, aqueous technique, semimetal-alloy nanointerfaces are patterned within a hybrid thermoelectric system consisting of tellurium (Te) nanowires and the conducting polymer poly(3,4-ethylenedioxythiophene):poly(styrene-sulfonate) (PEDOT:PSS). Specifically, this method is used to grow nanoscale islands of Cu_1.75Te alloy subphases within hybrid PEDOT:PSS-Te nanowires. This technique is shown to provide tunability of thermoelectric and electronic properties, providing up to 22% enhancement of the system's power factor in the low-doping regime, consistent with preferential scattering of low energy carriers. This work provides an exciting platform for rational design of multiphase nanocomposites and highlights the potential for engineering of carrier filtering within hybrid thermoelectrics via introduction of interfaces with controlled structural and energetic properties.

Original language	English (US)
Pages (from-to)	3352-3359
Number of pages	8
Journal	Nano Letters
Volume	16
Issue number	5
DOIs	https://doi.org/10.1021/acs.nanolett.6b01009
State	Published - May 11 2016

Keywords

Thermoelectric
carrier scattering
conducting polymer
heterostructure
nanocomposite

ASJC Scopus subject areas

Bioengineering
General Chemistry
General Materials Science
Condensed Matter Physics
Mechanical Engineering

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10.1021/acs.nanolett.6b01009

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title = "Carrier Scattering at Alloy Nanointerfaces Enhances Power Factor in PEDOT:PSS Hybrid Thermoelectrics",

abstract = "This work demonstrates the first method for controlled growth of heterostructures within hybrid organic/inorganic nanocomposite thermoelectrics. Using a facile, aqueous technique, semimetal-alloy nanointerfaces are patterned within a hybrid thermoelectric system consisting of tellurium (Te) nanowires and the conducting polymer poly(3,4-ethylenedioxythiophene):poly(styrene-sulfonate) (PEDOT:PSS). Specifically, this method is used to grow nanoscale islands of Cu1.75Te alloy subphases within hybrid PEDOT:PSS-Te nanowires. This technique is shown to provide tunability of thermoelectric and electronic properties, providing up to 22% enhancement of the system's power factor in the low-doping regime, consistent with preferential scattering of low energy carriers. This work provides an exciting platform for rational design of multiphase nanocomposites and highlights the potential for engineering of carrier filtering within hybrid thermoelectrics via introduction of interfaces with controlled structural and energetic properties.",

keywords = "Thermoelectric, carrier scattering, conducting polymer, heterostructure, nanocomposite",

author = "Zaia, {Edmond W.} and Ayaskanta Sahu and Preston Zhou and Gordon, {Madeleine P.} and Forster, {Jason D.} and Shaul Aloni and Liu, {Yi Sheng} and Jinghua Guo and Urban, {Jeffrey J.}",

note = "Publisher Copyright: {\textcopyright} 2016 American Chemical Society.",

year = "2016",

month = may,

day = "11",

doi = "10.1021/acs.nanolett.6b01009",

language = "English (US)",

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AU - Zaia, Edmond W.

AU - Sahu, Ayaskanta

AU - Zhou, Preston

AU - Gordon, Madeleine P.

AU - Forster, Jason D.

AU - Aloni, Shaul

AU - Liu, Yi Sheng

AU - Guo, Jinghua

AU - Urban, Jeffrey J.

PY - 2016/5/11

Y1 - 2016/5/11

N2 - This work demonstrates the first method for controlled growth of heterostructures within hybrid organic/inorganic nanocomposite thermoelectrics. Using a facile, aqueous technique, semimetal-alloy nanointerfaces are patterned within a hybrid thermoelectric system consisting of tellurium (Te) nanowires and the conducting polymer poly(3,4-ethylenedioxythiophene):poly(styrene-sulfonate) (PEDOT:PSS). Specifically, this method is used to grow nanoscale islands of Cu1.75Te alloy subphases within hybrid PEDOT:PSS-Te nanowires. This technique is shown to provide tunability of thermoelectric and electronic properties, providing up to 22% enhancement of the system's power factor in the low-doping regime, consistent with preferential scattering of low energy carriers. This work provides an exciting platform for rational design of multiphase nanocomposites and highlights the potential for engineering of carrier filtering within hybrid thermoelectrics via introduction of interfaces with controlled structural and energetic properties.

AB - This work demonstrates the first method for controlled growth of heterostructures within hybrid organic/inorganic nanocomposite thermoelectrics. Using a facile, aqueous technique, semimetal-alloy nanointerfaces are patterned within a hybrid thermoelectric system consisting of tellurium (Te) nanowires and the conducting polymer poly(3,4-ethylenedioxythiophene):poly(styrene-sulfonate) (PEDOT:PSS). Specifically, this method is used to grow nanoscale islands of Cu1.75Te alloy subphases within hybrid PEDOT:PSS-Te nanowires. This technique is shown to provide tunability of thermoelectric and electronic properties, providing up to 22% enhancement of the system's power factor in the low-doping regime, consistent with preferential scattering of low energy carriers. This work provides an exciting platform for rational design of multiphase nanocomposites and highlights the potential for engineering of carrier filtering within hybrid thermoelectrics via introduction of interfaces with controlled structural and energetic properties.

KW - Thermoelectric

KW - carrier scattering

KW - conducting polymer

KW - heterostructure

KW - nanocomposite

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Carrier Scattering at Alloy Nanointerfaces Enhances Power Factor in PEDOT:PSS Hybrid Thermoelectrics

Abstract

Keywords

ASJC Scopus subject areas

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