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|Title:||Thermal degradation mechanisms of PEDOT:PSS||Authors:||Vitoratos, Evangelos G.
Sakkopoulos, Sotirios A.
Choulis, Stelios A.
|Keywords:||Conducting polymers;Conductivity degradation mechanisms;Thermal stability;PEDOT/PSS;Organic light emitting diodes;Organic solar cells||Category:||Electrical Engineering,Electronic Engineering,Information Engineering||Field:||Engineering and Technology||Issue Date:||2009||Publisher:||Elsevier B.V.||Source:||Organic Electronics, Volume 10, Issue 1, February 2009, Pages 61-66||Abstract:||The thermal stability of thin (50 nm) PEDOT:PSS films, was investigated by dc conductivity measurements, X-ray and UV photoelectron spectroscopies as a function of heating temperature and heating time. The mechanism of electrical conductivity as a function of temperature is consistent with a hopping type carrier transport. The electrical conductivity decreased, as a function of time, in agreement with a granular metal type structure, in which aging is due to the shrinking of the PEDOT conductive grains. XPS and UPS spectra indicate that conformational changes of the PEDOT:PSS film are responsible for this behaviour and a model for these modifications is proposed.||URI:||http://ktisis.cut.ac.cy/handle/10488/837||ISSN:||1566-1199||DOI:||http://dx.doi.org/10.1016/j.orgel.2008.10.008||Rights:||Copyright © 2008 Elsevier B.V. All rights reserved.||Type:||Article|
|Appears in Collections:||Άρθρα/Articles|
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