The origin of the high conductivity of poly(3,4-ethylenedioxythiophene)- poly(styrenesulfonate) (PEDOT-PSS) plastic electrodes
2006 (English)In: Chemistry of Materials, ISSN 0897-4756, Vol. 18, no 18, 4354-4360 p.Article in journal (Refereed) Published
The development of printed and flexible (opto)electronics requires specific materials for the device's electrodes. Those materials must satisfy a combination of properties. They must be electrically conducting, transparent, printable, and flexible. The conducting polymer poly(3,4-ethylenedioxythiophene) - poly-(styrenesulfonate) (PEDOT-PSS) is known as a promising candidate. Its conductivity can be increased by 3 orders of magnitude by the secondary dopant diethylene glycol (DEG). This "secondary doping" phenomenon is clarified in a combined photoelectron spectroscopy and scanning probe microscopy investigation. PEDOT-PSS appears to form a three-dimensional conducting network explaining the improvement of its electrical property upon addition of DEG. Polymer light emitting diodes are successfully fabricated using the transparent plastic PEDOT-PSS electrodes instead of the traditionally used indium tin oxide. © 2006 American Chemical Society.
Place, publisher, year, edition, pages
2006. Vol. 18, no 18, 4354-4360 p.
National CategoryEngineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-37450DOI: 10.1021/cm061032+Local ID: 35885OAI: oai:DiVA.org:liu-37450DiVA: diva2:258299