Home > Research > Publications & Outputs > Toward High Thermoelectric Performance of Thiop...

Electronic data

  • AFM-manuscript-15 Aug- Final

    Rights statement: This is the peer reviewed version of the following article: M. Famili, I. M. Grace, Q. Al‐Galiby, H. Sadeghi, C. J. Lambert, Adv. Funct. Mater. 2018, 28, 1703135. https://doi.org/10.1002/adfm.201703135 which has been published in final form at http://onlinelibrary.wiley.com/doi/10.1002/adfm.201703135/abstract This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.

    Accepted author manuscript, 1.6 MB, PDF document

    Available under license: CC BY-NC: Creative Commons Attribution-NonCommercial 4.0 International License

Links

Text available via DOI:

View graph of relations

Toward High Thermoelectric Performance of Thiophene and Ethylenedioxythiophene (EDOT) Molecular Wires

Research output: Contribution to journalJournal article

Published
Article number1703135
<mark>Journal publication date</mark>11/04/2018
<mark>Journal</mark>Advanced Functional Materials
Issue number15
Volume28
Number of pages6
Publication statusPublished
Early online date16/10/17
Original languageEnglish

Abstract

The design of thermoelectric materials for the efficient conversion of waste heat into electricity requires simultaneous tuning of their electrical and thermal conductance. A comparative theoretical study of electron and phonon transport in thiophene and ethylenedioxythiophene (EDOT) based molecular wires is performed. It is shown that modifying thiophene by substituting ethylenedioxy enhances the thermoelectric figure of merit ZT for molecules of the same length. Furthermore, it is demonstrated that the electrical conductance of EDOT-based wires decays more slowly with length than that of thiophene-based wires and that their thermal conductance is lower. The room-temperature ZT of undoped EDOT is found to be rather low. However, doping of EDOT by the electron acceptor tolunenesulfunate increases the Seebeck coefficient and electrical conductance, while decreasing the thermal conductance, leading to a thermoelectric figure of merit as high as ZT = 2.4.

Bibliographic note

This is the peer reviewed version of the following article: M. Famili, I. M. Grace, Q. Al‐Galiby, H. Sadeghi, C. J. Lambert, Adv. Funct. Mater. 2018, 28, 1703135. https://doi.org/10.1002/adfm.201703135 which has been published in final form at http://onlinelibrary.wiley.com/doi/10.1002/adfm.201703135/abstract This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.