Optimal overlayer inspired by Photuris firefly improves light-extraction efficiency of existing light-emitting diodes

Annick Bay, Nicolas André, Michaël Sarrazin, Ali Belarouci, Vincent Aimez, Laurent Francis, Jean-Pol Vigneron

    Résultats de recherche: Contribution à un journal/une revueArticle

    148 Téléchargements (Pure)

    Résumé

    In this paper the design, fabrication and characterization of a bioinspired overlayer deposited on a GaN LED is described. The purpose of this overlayer is to improve light extraction into air from the diode's high refractive-index active material. The layer design is inspired by the microstructure found in the firefly Photuris sp. The actual dimensions and material composition have been optimized to take into account the high refractive index of the GaN diode stack. This two-dimensional pattern contrasts other designs by its unusual profile, its larger dimensions and the fact that it can be tailored to an existing diode design rather than requiring a complete redesign of the diode geometry. The gain of light extraction reaches values up to 55% with respect to the reference unprocessed LED.
    langue originaleAnglais
    Pages (de - à)A179-A189
    journalOptics Express
    Volume21
    Numéro de publication1
    Etat de la publicationPublié - 14 janv. 2013

    Empreinte digitale Examiner les sujets de recherche de « Optimal overlayer inspired by Photuris firefly improves light-extraction efficiency of existing light-emitting diodes ». Ensemble, ils forment une empreinte digitale unique.

  • Équipement

  • Contient cette citation