Projets par an
Résumé
Light extraction from lightemitting materials is fundamentally limited by internal reflections due to the high dielectricconstant contrast between the material that produces the light and the emergent medium. These internal reflections can however be reduced significantly by a welldesigned texturation of the surface of the emitting material. We used a genetic algorithm to determine optimal geometrical and material parameters for this texturation, the objective being to maximize the extraction of light of a GaN lightemitting diode. This study, which was restricted to twodimensional texturations, shows that symmetric triangles actually correspond to the optimal shape. The dielectric constant of the material used for this texturation should ideally have the same dielectric constant as the GaN. The optimal texturation determined in this work leads to a lightextraction efficiency of 11.1%, which improves significantly the value of 3.7% obtained with a flat surface and the value of 5.7% achieved in previous work.
langue originale  Anglais 

Pages (de  à)  025002 
Nombre de pages  7 
journal  Journal of Optics 
Volume  17 
Numéro de publication  2 
Les DOIs  
Etat de la publication  Publié  2015 
Empreinte digitale
Examiner les sujets de recherche de « Optimization by a genetic algorithm of the lightextraction efficiency of a GaN lightemitting diode ». Ensemble, ils forment une empreinte digitale unique.Projets
 2 Terminé

LED: Modeling, optimization and experimental realization of nanostructured LightEmitting Diodes
Mayer, A., Francis, L. & Aimez, V.
17/11/15 → 18/01/19
Projet: Recherche

Équipement

Plateforme Technologique Calcul Intensif
Benoît Champagne (!!Manager)
Plateforme technologique Calcul intensifEquipement/installations: Plateforme technolgique