Spectral properties of resonant-cavity, polyfluorene light-emitting diodes

We report on the fabrication and device properties of light-emitting resonant cavity conjugated-polymer diodes. The microcavity structures were constructed using a dielectric mirror, an indium–tin–oxide anode, a green light-emitting polyfluorene blend, and a metal (cathode) mirror. The best performa...

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Bibliographic Details
Published in:Applied physics letters 2000-08, Vol.77 (9), p.1262-1264
Main Authors: Fletcher, R. B., Lidzey, D. G., Bradley, D. D. C., Bernius, M., Walker, S.
Format: Article
Language:English
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Summary:We report on the fabrication and device properties of light-emitting resonant cavity conjugated-polymer diodes. The microcavity structures were constructed using a dielectric mirror, an indium–tin–oxide anode, a green light-emitting polyfluorene blend, and a metal (cathode) mirror. The best performance was obtained for a composite calcium–aluminum cathode, that combines high reflectivity with a low workfunction. This structure emitted electroluminescence with a linewidth of 12 nm and a maximum brightness of 300 cd m−2 at a bias of 35 V with an efficiency of 0.95 cd A−1.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.1287402