KYRGINAS, Dimitrios; LEDRU, Gérald; GLORIEUX, Benoit; ZISSIS, Georges

doi:10.1117/12.2606554

Métadonnées

Afficher la notice complète

Licence d’utilisation du document

KYRGINAS, Dimitrios
Lumière et Matière [LAPLACE-LM]
LAboratoire PLasma et Conversion d'Energie [LAPLACE]

LEDRU, Gérald
Lumière et Matière [LAPLACE-LM]

GLORIEUX, Benoit
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

Langue

Communication dans un congrès

Ce document a été publié dans

2022-01-22, San Francisco. 2022, vol. 12022, p. 56 / 120220O (5 p.)

SPIE

Résumé en anglais

In the present work, a purple laser diode of 405 nm is employed for the excitation of different types of phosphors for thepurpose of building a white light source. Three different types of phosphor materials were synthesized – a blue phosphor(BAM), a green phosphor (GYAG) and a red phosphor based on nitride. These samples were synthesized in the form ofsilicone pellets, having different thicknesses and different concentrations in the silicone matrix. In this study, two differentapproaches were followed. First, the three different samples were stacked together in various combinations to study thecolorimetric parameters of the emitted converted light, particularly the correlated color temperature (CCT) and the colorrendering index (CRI). In the second approach, the three types of phosphors were merged in the same silicone pellet. Pelletswith different thickness and ratio of the three phosphors were prepared, and their CCT and CRI parameters were measuredunder laser excitation. In the first case, a CCT of 2264 K and a CRI of 74 were achieved while with the second approach, anaverage temperature of 4500 K and a CRI of 85 were reached. While the difference between the CRI values for both cases isnot big, the CCT value of the mixed samples is twice as high as the value of the stacked pellets, something attributed tosimultaneous excitation of phosphors in mixed samples while, when stacked, each material is irradiated in a specific order.< Réduire

Métadonnées

Licence d’utilisation du document

Laser-driven white light generation by mixing blue (BAM), green (GYAG), and red (nitride) phosphors

Langue

Ce document a été publié dans

Résumé en anglais

DOI

Origine

Unités de recherche