Projets par an
Résumé
We present a genetic algorithm (GA) we developed for the optimization of light-emitting diodes (LED) and solar thermal collectors. The surface of a LED can be covered by periodic structures whose geometrical and material parameters must be adjusted in order to maximize the extraction of light. The optimization of these parameters by the GA enabled us to get a light-extraction efficiency η of 11.0% from a GaN LED (for comparison, the flat material has a light-extraction efficiency η of only 3.7%). The solar thermal collector we considered consists of a waffle-shaped Al substrate with NiCrOx and SnO2 conformal coatings. We must in this case maximize the solar absorption α while minimizing the thermal emissivity ? in the infrared. A multi-objective genetic algorithm has to be implemented in this case in order to determine optimal geometrical parameters. The parameters we obtained using the multi-objective GA enable α~97.8% and ε~4.8%, which improves results achieved previously when considering a flat substrate. These two applications demonstrate the interest of genetic algorithms for addressing complex problems in physics.
langue originale | Anglais |
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titre | Proceedings of SPIE - The International Society for Optical Engineering |
Editeur | SPIE |
Nombre de pages | 10 |
Volume | 9187 |
ISBN (imprimé) | 9781628412147 |
Les DOIs | |
Etat de la publication | Publié - 2014 |
Evénement | The Nature of Light: Light in Nature V - San Diego, États-Unis Durée: 18 août 2014 → … |
Une conférence
Une conférence | The Nature of Light: Light in Nature V |
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Pays/Territoire | États-Unis |
La ville | San Diego |
période | 18/08/14 → … |
Empreinte digitale
Examiner les sujets de recherche de « Genetic algorithms used for the optimization of light-emitting diodes and solar thermal collectors ». Ensemble, ils forment une empreinte digitale unique.Projets
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LED: Modeling, optimization and experimental realization of nanostructured Light-Emitting Diodes
Mayer, A. (Responsable du Projet), Francis, L. (Responsable du Projet) & Aimez, V. (Responsable du Projet)
17/11/15 → 18/01/19
Projet: Recherche
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consortium des équipements de calcul intensif
Champagne, B. (Co-investigateur)
1/01/11 → 31/12/22
Projet: Recherche
Équipement
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Plateforme Technologique Calcul Intensif
Champagne, B. (!!Manager)
Plateforme technologique Calcul intensifEquipement/installations: Plateforme technolgique