Color variation with electroluminescent organic semiconductors in multimode resonant cavities
- 31 October 1994
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 65 (18) , 2308-2310
- https://doi.org/10.1063/1.112726
Abstract
The range of possibilities in controlling the color of an organic semiconductor based light emitter diode(LED) by incorporating the active layers in a multimode Fabry–Pérot cavity is demonstrated. The combination of carefully designed multimode microcavities and electroluminescent organic semiconductors makes possible the realization of mixed colors such as white, purple, etc. with a single LED. The parameters affecting the color include the total optical thickness of the device and the position of the electromagnetic‐field antinodes with respect to the location of the emitting dipoles. The electrical characteristics and quantum efficiency of such devices are also reported.Keywords
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