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.
Saladino, M.L., Chillura Martino, D.F., Floriano, M., Hreniak, D., Marciniak, L., Strek, W., et al. (2014). Ce:Y3Al5O12−Poly(methyl methacrylate) Composite for White-Light-Emitting Diodes. JOURNAL OF PHYSICAL CHEMISTRY. C, 118, 9107-9113 [10.1021/jp412173g].
Ce:Y3Al5O12−Poly(methyl methacrylate) Composite for White-Light-Emitting Diodes
SALADINO, Maria Luisa;CHILLURA MARTINO, Delia Francesca;FLORIANO, Michele;CAPONETTI, Eugenio
2014-01-01
Abstract
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.
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