Solution processed thermoelectric materials for large area applications
Lead Research Organisation:
Swansea University
Department Name: College of Engineering
Abstract
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Organisations
Publications
Cowen L
(2017)
Review-Organic Materials for Thermoelectric Energy Generation
in ECS Journal of Solid State Science and Technology
Jonathan ATOYO
(2020)
Enhanced electrical conductivity and Seebeck coefficient in PEDOT:PSS via a two-step Ionic liquid & NaBH4 treatment
in MDPI POLYMERS
Rapp J
(2020)
Seeing around corners with edge-resolved transient imaging.
in Nature communications
Studentship Projects
| Project Reference | Relationship | Related To | Start | End | Student Name |
|---|---|---|---|---|---|
| EP/N509553/1 | 30/09/2016 | 29/06/2022 | |||
| 1815896 | Studentship | EP/N509553/1 | 30/09/2016 | 30/03/2020 | Jonathan Atoyo |
| Description | I have discovered several methods utilizing certain polar solvents and ionic liquids to improve the electrical conductivity of PEDOT:PSS polymer and thus the power factor of the material. The PEDOT:PSS polymer acts as a matrix by which it can be doped by either inorganic nano particles or solvents and acid. I have developed certain methods which can be useful and published to aid in the greater scope of research. Therein my most recent soon for publication (accepted manuscript) titled Enhanced electrical conductivity and Seebeck coefficient in PEDOT:PSS via a two-step Ionic liquid & NaBH4 treatment. Thus far i have also discovered a novel method of using carbon nanotubes imbedded within PEDOT:PSS polymer matrix with a chemical treatment to formulate N type PEDOT:PSS thermoelectric materials and a novel method by using the ionic liquid post treatment for stability of the films to prevent oxygen doping in air which invariably turns the N type films back into P type films. This is significant because not only do N type thermoelectrics suffer from re oxidation stability issues but PEDOT:PSS based thermoelectrics are not reported in literature (only 3 papers currently). I have also managed to answer the question of my thesis which is to similtanously improve the Seebeck coefficient and Electrical conductivity and thus increase the power factor significantly. I have done this by a novel three part system i developed using carbon nanotubes ionic liquid and a chemical post treatment which improved the electrical conductivity up to 4000 S/cm and seebeck coefficient up to 25 uv/k which results in a power factor above 240 uw/m/k. This chapter is significant. and will result in at least two papers |
| Exploitation Route | it could be taken forward by other researchers because they can expand on the methods i have developed by mixing them with other methods. I have found a way to improve the electrical conductivity of PEDOT:PSS and others can engineer a way to improve the Seebeck coefficient as well mixing their approach and my approach to optimize the material efficiency. Finding a way to similtanously improve both the seebeck coefficient and electrical conductivity is vital for optimizing ZT and the discovery of an N type PEDOT:PSS is very significant to N type thermoelectrics research. |
| Sectors | Energy Environment |