Title :

In situ synthesis of highly crystalline Tb-doped YAG nanophosphor using the mesopores of silica monolith as template

Author(s) :

Abdelhay, Aboulaich [Auteur]
Institut de Chimie de Clermont-Ferrand [ICCF]
Caperaa, Nathalie [Auteur]
El Hamzaoui, Hicham [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
CAPOEN, Bruno [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Potdevin, Audrey [Auteur]
Institut de Chimie de Clermont-Ferrand [ICCF]
Bouazaoui, Mohamed [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Chadeyron, Geneviève [Auteur]
Mahiou, Rachid [Auteur]
Institut de Chimie de Clermont-Ferrand [ICCF]

Journal title :

Journal of Materials Chemistry C

Pages :

5041-5049

Publisher :

Royal Society of Chemistry

Publication date :

2015-04-13

ISSN :

2050-7526

HAL domain(s) :

Physique [physics]/Physique [physics]/Optique [physics.optics]

English abstract : [en]

This report describes the first synthesis of a highly crystalline YAG:Tb nanophosphor inside the pores of a mesoporous silica monolith (MSM). A simple wet impregnation procedure using a YAG:Tb sol and a MSM platform prepared ...
Show more >This report describes the first synthesis of a highly crystalline YAG:Tb nanophosphor inside the pores of a mesoporous silica monolith (MSM). A simple wet impregnation procedure using a YAG:Tb sol and a MSM platform prepared by a sol–gel method was adopted to prepare highly homogeneous MSM–YAG:Tb luminescent composites. The morphological, structural and luminescence properties of in situ generated YAG:Tb nanocrystals, investigated using XRD, TEM, HRTEM, EDS, FTIR, nitrogen gas sorption and photoluminescence measurements, were compared to those of the bulk YAG:Tb phosphor. The specific surface area and the pore volume of the MSM host material were found to be lower when YAG:Tb nanoparticles were grown in the pores of the MSM material. The particle diameter of the nano-sized YAG:Tb phosphor was estimated to be about 23 nm. The MSM–YAG:Tb composite exhibited a strong green fluorescence emission with the characteristic main emission band of Tb3+ located at 548 nm. The prepared composite also showed a shorter photoluminescence (PL) lifetime and excitation bands shifted to lower wavelengths compared to the neat YAG:Tb phosphor. The as-prepared MSM–YAG:Tb material could be integrated into optoelectronic devices and holds good potential to be applied in decorative lightingShow less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Collections :

• Laboratoire de Physique des Lasers, Atomes et Molécules (PhLAM) - UMR 8523

Source :

Harvested from HAL