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http://dx.doi.org/10.7736/KSPE.2012.29.11.1183

Influence of Electrode and Thickness of Organic Layer to the Emission Spectra in Microcavity Organic Light Emitting Diodes  

Kim, Chang-Kyo (Department of Information and Electronics Engineering, Soonchunhyang Univ.)
Han, Ga-Ram (Department of Information and Electronics Engineering, Soonchunhyang Univ.)
Kim, Il-Yeong (Department of Information and Electronics Engineering, Soonchunhyang Univ.)
Hong, Chin-Soo (Department of Electronic Physics, Soonchunhyang Univ.)
Publication Information
Journal of the Korean Society for Precision Engineering / v.29, no.11, 2012 , pp. 1183-1189 More about this Journal
Abstract
Organic light-emitting diodes (OLEDs) using microcavity effect have attracted great attention because they can reduce the width of emission spectra from organic materials, and enhance brightness from the same material. We demonstrate the simulation results of the radiation properties from top-emitting organic light-emitting diodes (TE-OLEDs) with microcavity structures based on the general electromagnetic theory. Organic materials such as N,N'-di (naphthalene-1-yl)-N,N'-diphenylbenzidine (NPB) as a hole transport layer and tris (8-hydroxyquinoline) ($Alq_3$) as emitting and electron transporting layer are used to form the OLEDs. The organic materials were sandwiched between anode such as Ni or Au and cathode such as Al, Ag, or Al:Ag. The devices were characterized with electroluminescence phenomenon. We confirmed that the simulation results are consistent with experimental results.
Keywords
OLED; Microcavity; Top-emitting; Transparent Electrode;
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