Paintable films from chemically exfoliated 2D bismuth telluride nanosheets

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Abstract

This work highlights a method whereby solvent exfoliation of Bi2Te3 into solution-dispersible 2D nanosheets can form a practical thin film that can be distributed across a surface. Optimized exfoliated suspensions are also shown to form smooth, uniform blends when mixed with poly ethylene glycol and other polymers to produce a paintable Bi2Te3 film that can be applied to surfaces using an innovative painting technique. Atomic force microscopy, transmission electron spectroscopy, Raman scattering spectroscopy and scanning electron spectroscopy are used to examine the structure of the 2D nanosheets and the Bi2Te3 thin films. Electrical transport studies show that the films have conductive pathways over a range of surfaces and various structural formations, linking the conductivity to the percolating conduction through the nanosheet ensemble.

Original languageEnglish
Title of host publicationThermoelectric and Thermal Interface Materials
EditorsC. O'Dwyer, J. H. He
PublisherElectrochemical Society Inc.
Pages1-11
Number of pages11
Edition41
ISBN (Electronic)9781607685395
DOIs
Publication statusPublished - 2014
EventSymposium on Thermoelectric and Thermal Interface Materials - 2014 ECS and SMEQ Joint International Meeting - Cancun, Mexico
Duration: 5 Oct 20149 Oct 2014

Publication series

NameECS Transactions
Number41
Volume64
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Conference

ConferenceSymposium on Thermoelectric and Thermal Interface Materials - 2014 ECS and SMEQ Joint International Meeting
Country/TerritoryMexico
CityCancun
Period5/10/149/10/14

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