6533b85dfe1ef96bd12bdd79

RESEARCH PRODUCT

Ce:Y3Al5O12−Poly(methyl methacrylate) Composite for White-Light-Emitting Diodes

Dariusz HreniakEugenio CaponettiMaria Luisa SaladinoMichele FlorianoWieclaw StrekLukasz MarciniakDelia Francesca Chillura Martino

subject

Materials sciencePhotoluminescenceComposite numberAnalytical chemistryNuclear magnetic resonance spectroscopyPoly(methyl methacrylate)Surfaces Coatings and FilmsElectronic Optical and Magnetic Materialschemistry.chemical_compoundGeneral EnergychemistryTransmission electron microscopyvisual_artvisual_art.visual_art_mediumCP-MAS NMR interactions composite White-Light-Emitting DiodesPhysical and Theoretical ChemistryMethyl methacrylateLuminescenceSpectroscopySettore CHIM/02 - Chimica Fisica

description

A Ce:YAG-poly(methyl methacrylate) (PMMA) composite was prepared by using the melt compounding method. The structure and morphology were investigated by X-ray diffractometry, transmission electron microscopy, and small-angle X-ray scattering. The optical properties (emission, excitation, and fluorescence decay rate) of the composite were studied by using photoluminescence spectroscopy. The polymer–filler interactions were studied using 13C cross-polarization magic-angle spinning NMR spectroscopy (13C{1H} CP-MAS NMR). The results indicated that Ce:YAG particles are well-dispersed in the PMMA matrix without loss of their luminescence properties or significant spectral shift, thus suggesting that this composite can be valuable for advanced applications in white LED manufacture. A demonstration of its efficiency in white LED devices is also reported.

yearjournalcountryeditionlanguage
2014-04-22
10.1021/jp412173ghttp://hdl.handle.net/10447/96908