Informationen zu Lehrveranstaltungen in →Opal / Information about lectures can be found in →Opal

Skip to content.


search  |  internal  |  deutsch
Personal tools
TU Dresden » Faculty of Mechanical Science and Engineering » Institute for Materials Science » Chair of Materials Science and Nanotechnology

» presentations   » 2014.10.05-10

Enhanced thermoelectric figure of merit in polycrystalline carbon nanostructures

Thomas Lehmann, Dmitry A. Ryndyk, Gianaurelio Cuniberti

International CECAM Workshop on "High performance models for charge transport in large scale materials systems"

2014.10.05-10; Bremen, Germany

Grain boundaries are commonly observed in carbon nanostructures, but their influence on thermal and electronic properties are still not completely understood. Using a combined approach of density functional tight-binding theory and the Green function method we investigate electron and phonon transport in carbon based systems. In this work, quantum transport and thermoelectric properties are summarized for graphene sheets, graphene nanoribbons and carbon nanotubes with a variety of grain boundary types. Motivated by previous findings that disorder scatters phonons more effectively than electrons, a significant improvement in the thermoelectric performance for polycrystalline systems is expected. While the effect depends on the grain boundary type, we demonstrate that grain boundaries are a viable tool to greatly enhance the thermoelectric figure of merit, paving the way for the design of new thermoelectric materials

conference announcement (html)

people| research | teaching | links | internal | home

last modified: 2021.10.04 Mon
author: webadmin