Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Gilles Le Blevennec

Badhise Ben Bakir

Olivier Jean Poncelet

Adrien Gasse

Etienne Quesnel

Benoit Racine

Marianne Consonni

Caroline Celle

Eirini Sarelli

Philippe Berne

Sonia De Sousa Nobre

A light-emitting device includes a first electrode reflecting in a spectral range, a second electrode, and a light-emitting layer extending between the first and second electrodes and configured to emit electromagnetic radiation in the spectral range, the electromagnetic radiation emitted by the light-emitting layer being circularly polarized in a first polarization direction, the electromagnetic radiation reflected by the first electrode being circularly polarized in a second polarization direction, opposite to the first polarization direction. The second electrode is structured so as to define opaque patterns in the spectral range, arranged to block transmission of the circularly polarized electromagnetic radiation in the first polarization direction, and a spacing zone spacing apart the opaque patterns from one another and transparent in the spectral range so as to allow transmission of the circularly polarized electromagnetic radiation in the second polarization direction.

Light-emitting device

An optoelectronic light emitting device includes a light emitting diode configured to emit a first radiation, a conversion layer including at least one planar quantum well configured to convert the first radiation into a second radiation, by photoluminescence, a grating for extracting the second radiation being etched on an upper face of the layer, and a lateral reflector having a reflective surface which extends facing part at least of a lateral surface of the conversion layer.

Light emitting device, pixel comprising several such devices, matrix of pixels and associated manufacturing methods

Solution for use in filling micrometer-size cavities (), the solution comprising a first solvent, a first polymer () having a first molecular weight, a second polymer () having a second molecular weight, luminophores () and a surfactant, the second molecular weight being 10 to 50 times greater than the first molecular weight.

Solution for use in filling micrometer-size cavities

The invention relates to a method for producing a light-emitting diode comprising a semiconductor stack formed of a first layerof an active layerand of an extraction layerIt comprises a step of determining a distance hbetween emitting dipoles &#x3bc;that are located in the active layerand the extraction layersuch that the emitting dipoles &#x3bc;of vertical orientation have in particular a lifetime longer than that of the emitting dipoles of horizontal orientation.

Method for producing an extraction-layer light-emitting diode comprising a step of dimensioning a semiconductor layer

An optoelectronic device includes a LED that is suited to the emission of a radiation and that includes an active layer, and a conversion layer that extends over the active layer of the LED and that includes a plurality of fluorophores suited to the conversion of the radiation emitted by the LED, wherein the conversion layer is confined laterally by a mirror reflecting both the radiation converted by the fluorophores and the radiation not converted by the fluorophores, and vertically between a first and a second multilayer reflective filters forming a resonant Fabry-Perot cavity that blocks the radiation not converted by the fluorophores and has a transmittance peak for the radiation converted by the fluorophores.

Light emitting diode, pixel comprising a plurality of light emitting diodes and associated manufacturing methods

The invention relates to a method for producing a light-emitting diode, comprising a stack formed of a first semiconductor layerand of an active layera reflective electrodeextending in contact with the first semiconductor layercomprising a step of determining a distance between emitting dipoles that are located in the active layerand the reflective electrodefor which a lifetime of the emitting dipoles having a chosen orientation is longer than that of the emitting dipoles having the non-chosen orientation.

Method for producing a light-emitting diode comprising a step of dimensioning a semiconductor layer

The invention relates to an optical system having a light source, configured to emit electromagnetic radiation; a waveguide, configured to guide the electromagnetic radiation in a guiding direction and having an input; and an injection device, configured to inject the electromagnetic radiation emitted by the light source at the input of the waveguide. The injection device consists of a single dioptric interface designed to focus the electromagnetic radiation emitted by the light source at the input of the waveguide.

Optical system

An optical coupler including a first surface intended to receive a light beam and a second surface intended to supply at least part of the light beam, and a lateral wall connecting the first surface to the second surface, the lateral wall successively including, between the first and second surfaces, a first concave portion and a first convex portion.

Growing community of inventors

Grenoble, France

Gilles Le Blevennec