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Proceedings Paper

Electroluminescent devices made with conjugated polymers
Author(s): Neil C. Greenham; Richard H. Friend; Adam R. Brown; Donal D. C. Bradley; Karl Pichler; Paul L. Burn; Arno Kraft; Andrew B. Holmes
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Paper Abstract

In this paper we discuss the principles of operation of polymer electroluminescent devices, and identify the factors which limit device efficiency. We identify how efficiencies can be improved by careful control of the polymer system, and by the use of multilayer structures to confine holes within the device. Using these techniques we can achieve efficiencies of better than 1% photons per electron in devices based on poly(p-phenylenevinylene). We also describe the use of induced absorption techniques to identify the excited states present within an electroluminescent device and to estimate their concentrations.

Paper Details

Date Published: 27 August 1993
PDF: 8 pages
Proc. SPIE 1910, Electroluminescent Materials, Devices, and Large-Screen Displays, (27 August 1993);
Show Author Affiliations
Neil C. Greenham, Univ. of Cambridge (United Kingdom)
Richard H. Friend, Univ. of Cambridge (United Kingdom)
Adam R. Brown, Univ. of Cambridge (United Kingdom)
Donal D. C. Bradley, Univ. of Cambridge (United Kingdom)
Karl Pichler, Univ. of Cambridge (United Kingdom)
Paul L. Burn, Univ. of Cambridge (United Kingdom)
Arno Kraft, Univ. of Cambridge (United Kingdom)
Andrew B. Holmes, Univ. of Cambridge (United Kingdom)

Published in SPIE Proceedings Vol. 1910:
Electroluminescent Materials, Devices, and Large-Screen Displays
Esther M. Conwell; Milan Stolka; M. Robert Miller, Editor(s)

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