Journal
CHEMICAL PHYSICS LETTERS
Volume 427, Issue 4-6, Pages 394-398Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cplett.2006.06.035
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The surface morphology of PEDOT:PSS after mild oxygen plasma treatment were investigated by scanning electron microscopy and atomic force microscopy. The nanometer-scale islands on the surface of treated PEDOT:PSS were observed. Vacuum deposited organic light-emitting diodes (OLEDs) with treated PEDOT:PSS as anode buffer layer had been fabricated. The OLEDs with an appropriately treated PEDOT:PSS as anode buffer layer exhibited significantly enhanced lifetime and decreased driving voltage. The results suggest that the appropriate mild oxygen plasma treatment of PEDOT:PSS layers may be useful for the improvement of the interface with the hole transport layer and enhanced device performance. (c) 2006 Elsevier B.V. All rights reserved.
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