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dc.contributor.authorChoi, Seungkeunen_US
dc.contributor.authorKim, Sung-Jinen_US
dc.contributor.authorFuentes-Hernandez, Caneken_US
dc.contributor.authorKippelen, Bernarden_US
dc.date.accessioned2012-12-14T17:52:33Z
dc.date.available2012-12-14T17:52:33Z
dc.date.issued2011-07
dc.identifier.citationChoi, Seungkeun and Kim, Sung-Jin and Fuentes-Hernandez, Canek and Kippelen, Bernard, "ITO-free large-area organic light-emitting diodes with an integrated metal grid," Optics Express, 19, 14, A793-A803 (July 4 2011)en_US
dc.identifier.issn1094-4087
dc.identifier.urihttp://hdl.handle.net/1853/45565
dc.description© 2011 Optical Society of Americaen_US
dc.descriptionThe definitive version of this paper is available at: http://dx.doi.org/10.1364/OE.19.00A793en_US
dc.descriptionDOI: 10.1364/OE.19.00A793en_US
dc.description.abstractWe report on ITO-free large-area organic light-emitting diodes (OLEDs) fabricated on glass substrates comprising α-NPD as a hole transport layer (HTL) and coevaporated CBP:Ir(ppy)3 as the emission layer. Indium-tin-oxide (ITO) was replaced with a conductive polymer electrode and an electroplated thick metal grid was used to improve the homogeneity of the potential distribution over the transparent polymer electrode. An electrical model of a metal grid integrated OLED shows the benefits of the use of metal grids in terms of improving the uniformity of the light emitted as the area of the OLED increases as well as the conductivity of the transparent electrode decreases. By integrating metal grids with polymer electrodes, the luminance increases more than 24% at 6 V and 45% at 7 V compared to the polymer electrode devices without a metal grid. This implies that a lower voltage can be applied to achieve the same luminance, hence lowering the power consumption. Furthermore, metal grid integrated OLEDs exhibited less variation in light emission compared to devices without a metal grid.en_US
dc.language.isoen_USen_US
dc.publisherGeorgia Institute of Technologyen_US
dc.subjectLight-emitting diodesen_US
dc.subjectOptoelectronicsen_US
dc.subjectLight-emitting polymersen_US
dc.subjectPhysical opticsen_US
dc.subjectLuminescenceen_US
dc.subjectThin filmsen_US
dc.subjectThin film devices and applicationsen_US
dc.subjectTransparent conductive coatingsen_US
dc.titleITO-free large-area organic light-emitting diodes with an integrated metal griden_US
dc.typeArticleen_US
dc.contributor.corporatenameGeorgia Institute of Technology. Center for Organic Photonics and Electronicsen_US
dc.contributor.corporatenameGeorgia Institute of Technology. School of Electrical and Computer Engineeringen_US
dc.publisher.originalOptical Society of Americaen_US
dc.identifier.doi10.1364/OE.19.00A793


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