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Title: Thermal degradation mechanisms of PEDOT:PSS
Authors: Vitoratos, Evangelos G. 
Sakkopoulos, Sotirios A. 
Dalas, Evangelos 
Paliatsas, N. 
Karageorgopoulos, Dimitrios 
Petraki, Fotini 
Kennou, Stella 
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.
ISSN: 1566-1199
Rights: Copyright © 2008 Elsevier B.V. All rights reserved.
Type: Article
Appears in Collections:Άρθρα/Articles

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