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Proceedings Paper

New efficient light-emitting polymer diode for flat-panel display applications
Author(s): Salvatore Cina; Nick Baynes; Ellen Moons; Richard H. Friend; Jeremy H. Burroughes; Carl R. Towns; Karl Heeks; Rick O'Dell; Steven O'Conner; Nikoletta Anthanassopoulou
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Paper Abstract

We report on a new polymer light emitting diode (PLED) based on a blend of immiscible polymers. The device shows high efficiency and current density over a broad range of driving voltage, therefore exhibiting very high brightness. The polymer film morphology plays a very important role in determining the device performance, and it can be controlled by changing the blend ratio as well as the polymers molecular weight. The high performance are discussed in terms of 'barrier free' injection into excitonic states. A predicted lifetime in excess of 10,000 hours has already been achieved, making this device structure an ideal candidate for backlighting and monochromatic application.

Paper Details

Date Published: 15 June 2001
PDF: 8 pages
Proc. SPIE 4279, Organic Photonic Materials and Devices III, (15 June 2001); doi: 10.1117/12.429389
Show Author Affiliations
Salvatore Cina, Cambridge Display Technology Ltd. (United Kingdom)
Nick Baynes, Cambridge Display Technology Ltd. (United Kingdom)
Ellen Moons, Cambridge Display Technology Ltd. (Sweden)
Richard H. Friend, Cambridge Display Technology Ltd. (United Kingdom)
Jeremy H. Burroughes, Cambridge Display Technology Ltd. (United Kingdom)
Carl R. Towns, Cambridge Display Technology Ltd. (United Kingdom)
Karl Heeks, Cambridge Display Technology Ltd. (United Kingdom)
Rick O'Dell, Cambridge Display Technology Ltd. (United Kingdom)
Steven O'Conner, Cambridge Display Technology Ltd. (United Kingdom)
Nikoletta Anthanassopoulou, Cambridge Display Technology Ltd. (United Kingdom)


Published in SPIE Proceedings Vol. 4279:
Organic Photonic Materials and Devices III
Bernard Kippelen; Donal D. C. Bradley, Editor(s)

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