Silver-based intermetallic heterostructures in Sb 2Te 3 thick films with enhanced thermoelectric power factors

Yichi Zhang; Matthew L. Snedaker; Christina S. Birkel; Syed Mubeen; Xiulei Ji; Yifeng Shi; Deyu Liu; Xiaonao Liu; Martin Moskovits; Galen D. Stucky

doi:10.1021/nl204346g

Silver-based intermetallic heterostructures in Sb ₂Te ₃ thick films with enhanced thermoelectric power factors

Yichi Zhang, Matthew L. Snedaker, Christina S. Birkel, Syed Mubeen, Xiulei Ji, Yifeng Shi, Deyu Liu, Xiaonao Liu, Martin Moskovits, Galen D. Stucky

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

94 Scopus citations

Abstract

In this work, Ag _xTe _y-Sb ₂Te ₃ heterostructured films are prepared by ligand exchange using hydrazine soluble metal chalcogenide. Because of the created interfacial barrier, cold carriers are more strongly scattered than hot ones and thereby an over 50% enhanced thermoelectric power factor (∼2 μW/(cm·K ²)) is obtained at 150 °C. This shows the possibility of engineering multiphases to further improve thermoelectric performance beyond phonon scattering through a low-temperature solution processed route.

Original language	English (US)
Pages (from-to)	1075-1080
Number of pages	6
Journal	Nano Letters
Volume	12
Issue number	2
DOIs	https://doi.org/10.1021/nl204346g
State	Published - Feb 8 2012
Externally published	Yes

Keywords

Thermoelectric
antimony telluride
heterostructure
hot carrier filtering effect
ligand exchange
solution processed

ASJC Scopus subject areas

Bioengineering
General Chemistry
General Materials Science
Condensed Matter Physics
Mechanical Engineering

Access to Document

10.1021/nl204346g

Cite this

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title = "Silver-based intermetallic heterostructures in Sb 2Te 3 thick films with enhanced thermoelectric power factors",

abstract = "In this work, Ag xTe y-Sb 2Te 3 heterostructured films are prepared by ligand exchange using hydrazine soluble metal chalcogenide. Because of the created interfacial barrier, cold carriers are more strongly scattered than hot ones and thereby an over 50% enhanced thermoelectric power factor (∼2 μW/(cm·K 2)) is obtained at 150 °C. This shows the possibility of engineering multiphases to further improve thermoelectric performance beyond phonon scattering through a low-temperature solution processed route.",

keywords = "Thermoelectric, antimony telluride, heterostructure, hot carrier filtering effect, ligand exchange, solution processed",

author = "Yichi Zhang and Snedaker, {Matthew L.} and Birkel, {Christina S.} and Syed Mubeen and Xiulei Ji and Yifeng Shi and Deyu Liu and Xiaonao Liu and Martin Moskovits and Stucky, {Galen D.}",

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T1 - Silver-based intermetallic heterostructures in Sb 2Te 3 thick films with enhanced thermoelectric power factors

AU - Zhang, Yichi

AU - Snedaker, Matthew L.

AU - Birkel, Christina S.

AU - Mubeen, Syed

AU - Ji, Xiulei

AU - Shi, Yifeng

AU - Liu, Deyu

AU - Liu, Xiaonao

AU - Moskovits, Martin

AU - Stucky, Galen D.

PY - 2012/2/8

Y1 - 2012/2/8

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AB - In this work, Ag xTe y-Sb 2Te 3 heterostructured films are prepared by ligand exchange using hydrazine soluble metal chalcogenide. Because of the created interfacial barrier, cold carriers are more strongly scattered than hot ones and thereby an over 50% enhanced thermoelectric power factor (∼2 μW/(cm·K 2)) is obtained at 150 °C. This shows the possibility of engineering multiphases to further improve thermoelectric performance beyond phonon scattering through a low-temperature solution processed route.

KW - Thermoelectric

KW - antimony telluride

KW - heterostructure

KW - hot carrier filtering effect

KW - ligand exchange

KW - solution processed

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