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27 August 2009 Large area ITO-free flexible white OLEDs with Orgacon PEDOT:PSS and printed metal shunting lines
Stephan Harkema; Sibe Mennema; Marco Barink; Harmen Rooms; Joanne S. Wilson; Ton van Mol; Dirk Bollen
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Proceedings Volume 7415, Organic Light Emitting Materials and Devices XIII; 74150T (2009) https://doi.org/10.1117/12.825246
Event: SPIE Photonic Devices + Applications, 2009, San Diego, California, United States
Abstract
We demonstrate the feasibility of white organic light-emitting diodes that exclude the transparent conductor indium-tinoxide. Instead, a highly conductive OrgaconTM PEDOT:PSS material in combination with a metal support structure is used as transparent anode and hole-injection layer. The PEDOT:PSS exhibits a conductivity of 460±20 S/cm and a work function of 5.35±0.05 eV. On ITO-free OLEDs on glass with an active area of ~6 cm2 the inclusion of 120 nm thick printed metal lines reduces the variation in brightness from 35% to 20%. The ITO-free concept based on PEDOT:PSS with printed metal structures is scaled up to large flexible OLEDs with a size of 150 cm2 on a heat-stabilized Teonex® Polyethylene Naphtalate foil. The voltage distribution across the various electrodes was verified by a finite element model, allowing a prediction of the OLED brightness and homogeneity over large areas.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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Stephan Harkema, Sibe Mennema, Marco Barink, Harmen Rooms, Joanne S. Wilson, Ton van Mol, and Dirk Bollen "Large area ITO-free flexible white OLEDs with Orgacon PEDOT:PSS and printed metal shunting lines", Proc. SPIE 7415, Organic Light Emitting Materials and Devices XIII, 74150T (27 August 2009); https://doi.org/10.1117/12.825246
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