Journal
DISPLAYS
Volume 24, Issue 4-5, Pages 231-234Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.displa.2004.01.010
Keywords
organic light-emitting diode; TiO2; brightness; efficiency; the tunneling effect
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Organic light-emitting diodes (OLEDs) with a nanostructured TiO2 layer at the interface between indium tin oxide and a-naphtylphenyliphenyl diamine layers were fabricated using a vacuum evaporation method. The nanostructured TiO2 layer was achieved by the Sol-Gel method. Compared to the different thickness of the buffer layer, the OLEDs with the 6 nm buffer layer showed the highest efficiency. The enhancements in efficiency result from an improved balance of hole and electron injections and a more homogeneous adhesion of the buffer layer inserted. (C) 2004 Elsevier B.V. All rights reserved.
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