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has been cited by the following article:

• TITLE: Conductivity Degradation Study of PEDOT: PSS Films under Heat Treatment in Helium and Atmospheric Air

  AUTHORS: Evangelos Vitoratos, Sotirios Sakkopoulos, Nikolaos Paliatsas, Konstantinos Emmanouil, Stelios A. Choulis

  KEYWORDS: Conducting Polymers; Buffer Layers Degradation; PEDOT:PSS; Thermal Treatment;Organic Solar Cells; Organic Electronics

  JOURNAL NAME: Open Journal of Organic Polymer Materials, Vol.2 No.1, January 29, 2012

  ABSTRACT: PEDOT:PSS buffer layers have been processed with the standard annealing step used for organic solar cells device applications. The d.c. conductivity σ as a function of temperature for two heating rates under He and atmospheric air was studied. Moreover, the stability of the conductivity was investigated at different temperatures and environments vs time. The main results can be summarized in the following: the increase of σ due to the thermal activation of the carriers and the improvement of the crystallinity compete with the decrease of σ resulting from the irreversible structural degradation of the polymer chains promoted by the oxygen and moisture of the atmospheric air. The heat treatment time and the temperature at which the two competing mechanisms result in a maximum of the electrical conductivity have been determined and results are discussed relevant to organic optoelectronic devices containing PEDOT: PSS buffer layers.