Electronic transport and thermoelectric power generation in nanocrystal assemblies

Dong Kyun Ko, Christopher B. Murray

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Lead telluride(PbTe) nanoparticles are a material of high interest due to the strong confinement on electrons and phonons. "Artificial solids" composed of these "artificial atoms" as a building block opens a new opportunity in tuning various physical properties. Furthermore, construction of compound solids with silver telluride(Ag2Te) nanoparticles, as p-type dopants, enable us to study new collective properties of nanoparticle assemblies in electronic devices as well as thermoelectric modules. This presentation reports the synthesis and characterization of monodisperse lead telluride and silver telluride nanoparticles. Size of lead telluride nanoparticles were controlled by additional injection of precursors, where the distribution of nanoparticle size refocuses as the nanoparticles further grow in diffusion-controlled growth regime. Highly monodisperse silver telluride nanoparticles were obtained by digestive ripening process, showing a great advatange in large scale synthesis. Charge transport through nanoparticle assemblies was investigated by solution processed field effect transistor as a function of interparticle spacing and temperature of heat treatment. The feasibility as a thermoelectric energy conversion for waste heat recovery application is also proposed.

Original languageEnglish (US)
Title of host publicationAmerican Chemical Society - 236th National Meeting and Exposition, Abstracts of Scientific Papers
StatePublished - Dec 1 2008
Externally publishedYes
Event236th National Meeting and Exposition of the American Chemical Society, ACS 2008 - Philadelpia, PA, United States
Duration: Aug 17 2008Aug 21 2008

Publication series

NameACS National Meeting Book of Abstracts
ISSN (Print)0065-7727

Other

Other236th National Meeting and Exposition of the American Chemical Society, ACS 2008
CountryUnited States
CityPhiladelpia, PA
Period8/17/088/21/08

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

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