In:
ChemistrySelect, Wiley, Vol. 3, No. 31 ( 2018-08-23), p. 8992-8997
Abstract:
Organic thermoelectric (TE) materials, inspite of their low cost, non‐toxicity, easy availability, show a low thermoelectric figure of merit (ZT). Herein we report ZT 〉 0.04 for tosylate doped poly(3,4 ethylenedioxythiophene) (PEDOT‐Tos) with single walled carbon nanotubes (SWCNT) which is higher than the reported values for bulk nanostructured polymer based composites. The underlying reason for the enhancement of the transport properties is the morphological transformation of the nanocomposites exhibiting an increase degree of ordered structure of the samples with the increase of SWCNT content as is observed from XRD, UVVIS and FESEM studies. This increase in the ordered structure is due to the decrease in band gap that was found in DFT calculations which in turn increases the electrical conductivity which is responsible for the enhanced power factor. Further the SWCNTs introduce the interfaces that reduce the thermal conductivity due to scattering of phonons which further contributes to the enhancement in the figure of merit.
Type of Medium:
Online Resource
ISSN:
2365-6549
,
2365-6549
DOI:
10.1002/slct.201801384
Language:
English
Publisher:
Wiley
Publication Date:
2018
detail.hit.zdb_id:
2844262-3