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Indexed by:期刊论文

Date of Publication:2014-01-27

Journal:APPLIED PHYSICS LETTERS

Included Journals:SCIE、EI、Scopus

Volume:104

Issue:4

ISSN No.:0003-6951

Abstract:We demonstrate a simple low-cost approach as an alternative to conventional O-2 plasma treatment to modify the surface of indium tin oxide (ITO) anodes for use in organic light-emitting diodes. ITO is functionalized with F- ions by electrochemical treatment in dilute hydrofluoric acid. An electrode with a work function of 5.2 eV is achieved following fluorination. Using this electrode, a maximum external quantum efficiency of 26.0% (91 cd/A, 102 lm/W) is obtained, which is 12% higher than that of a device using the O-2 plasma-treated ITO. Fluorination also increases the transparency in the near-infrared region. (C) 2014 AIP Publishing LLC.