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

doi:10.1117/12.825246

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

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 Orgacon^TM 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.

Citation Download Citation

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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