Color Tunable Emission of Y3Al5O12:Ce3+ and Sm3+-Doped Zinc–Germanate–Tellurite Glass Nanocomposite Powders and Coatings for Light-Emitting Diodes Applications

Ernesto Abraham Salazar-Valenzuela, Josefina Alvarado-Rivera*, Mario Enrique Álvarez-Ramos

*Autor correspondiente de este trabajo

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

2 Citas (Scopus)

Resumen

A series of nanocomposite (NC) powders and coatings of ZnO–GeO2–TeO2:xSm3+ glass and Y3Al5O12:Ce3+ nanoparticles (YAG:Ce) are fabricated. Samarium ions concentration of the glass phosphor is varied with x values of 0.3, 1.0, 3.0, and 5.0 mol%. The powder batches are prepared with a 95/5 mass ratio of glass/YAG:Ce and uniaxially pressed to obtain powder pellets that are heat-treated at 350 °C. Morphology and structural characterization are conducted through X-ray diffraction analysis, scanning electron microscopy, and Raman spectroscopy. The photoluminescence properties of NCs are investigated under different wavelengths of 340, 403, and 460 nm, showing a global emission tonality in the reddish-orange and yellowish-green region according to the estimated CIE 1931 chromaticity coordinates. Also, NC coatings soda–lime glass slides are fabricated, and their photoluminescence is characterized using an UV light-emitting chip (≈365 nm) and a blue light-emitting chip (≈460 nm). The global emission under UV and blue light from the light-emitting diode (LED) chips of the NC coatings shows a color tunability in the warm white light and yellowish-green region.

Idioma originalInglés
Número de artículo2000636
PublicaciónPhysica Status Solidi (A) Applications and Materials Science
Volumen218
N.º4
DOI
EstadoPublicada - feb 2021

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