Title
Large area ITO-free flexible white OLEDs with Orgacon™ PEDOT:PSS and printed metal shunting lines
Author
TNO Industrie en Techniek
Harkema, S.
Mennema, S.
Barink, M.
Rooms, H.C.A.
Wilsona, J.S.
van Mol, A.M.B.
Bollen, D.
Publication year
2009
Abstract
We demonstrate the feasibility of white organic light-emitting diodes that exclude the transparent conductor indium-tinoxide. Instead, a highly conductive Orgacon™ 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 SPIE.
Subject
Flexible
ITO-free
Metal grid
OLED
ORGACON PEDOT:PSS
Printed silver
White-emitting
Flexible
ITO-free
Metal grid
OLED
PEDOT:PSS
Printed silver
White-emitting
Finite element method
ITO glass
Light emission
Light emitting diodes
Organic light emitting diodes (OLED)
Silver
Metals
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TNO identifier
409310
ISBN
9780819477057
ISSN
0277-786X
Source
Organic Light Emitting Materials and Devices XIII, 2 August 2009 through 4 August 2009, San Diego, CA. Conference code: 81432, 7415 (7415)
Series
Proceedings of SPIE - The International Society for Optical Engineering
Document type
conference paper