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Solution-processible corrugated structure and scattering layer for enhanced light extraction from organic light-emitting diodes

Title
Solution-processible corrugated structure and scattering layer for enhanced light extraction from organic light-emitting diodes
Authors
Hyun, W.J.[Hyun, Woo Jin]Im, S.H.[Im, Sang Hyuk]Park, O.O.[Park, O.Ok]Chin, B.D.[Chin, Byung Doo]
DGIST Authors
Park, O.O.[Park, O.Ok]
Issue Date
2012
Citation
Journal of Information Display, 13(4), 151-157
Type
Article
Article Type
Article
Keywords
Corrugated StructureCorrugated StructuresElectroluminescenceElectroluminescence SpectraExternal Quantum EfficiencyGlass SubstratesInterfaces (Materials)LightLight-TrappingLight ExtractionOrganic Light-Emitting Diodes (OLEDs)ScatteringScattering LayerSimple MethodSol-GelSol-GelsSol SolutionsSolution-ProcessingSubstratesTiOTitanium Dioxide
ISSN
1598-0316
Abstract
A simple method of fabricating out-coupling structures was demonstrated via solution-processing to enhance light extraction from organic light-emitting diodes (OLEDs). Scattering layers were easily obtained by spin-coating an SiO2 sol solution that contained TiO2 particles. By introducing the scattering layer and the solution-processible corrugated structure as internal and external extraction layers, the OLEDs showed increased external quantum efficiency without a change in the electroluminescence spectrum compared to conventional devices. Using these solution-processible out-coupling structures, nearly all-solution-processed OLEDs with enhanced light extraction could be fabricated. The light extraction enhancement is attributed to the suppression by the out-coupling structures of the light-trapping that arose at the interface of the glass substrate and the air. ? 2012 Copyright Taylor and Francis Group, LLC.
URI
http://hdl.handle.net/20.500.11750/2478
DOI
10.1080/15980316.2012.742470
Publisher
Korean Information Display Society
Files:
There are no files associated with this item.
Collection:
Energy Science and EngineeringETC1. Journal Articles


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