Highly directional emission and beam steering from organic light-emitting diodes with a substrate diffractive optical element
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Highly directional emission from an organic light-emitting diode (OLED) is demonstrated by out-coupling the substrate mode from a Eu-based OLED using a diffractive optical element embedded in the substrate. This approach gives emission that is confined in a single narrow cone with FWHM divergence of 15° or less, which is very different from the normal Lambertian emission of OLEDs.
Zhang , S , Turnbull , G A & Samuel , I D W 2014 , ' Highly directional emission and beam steering from organic light-emitting diodes with a substrate diffractive optical element ' Advanced Optical Materials , vol EarlyView . DOI: 10.1002/adom.201300441
Advanced Optical Materials
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