TY - JOUR
T1 - Color Tunable Emission of Y3Al5O12:Ce3+ and Sm3+-Doped Zinc–Germanate–Tellurite Glass Nanocomposite Powders and Coatings for Light-Emitting Diodes Applications
AU - Salazar-Valenzuela, Ernesto Abraham
AU - Alvarado-Rivera, Josefina
AU - Álvarez-Ramos, Mario Enrique
N1 - Publisher Copyright:
© 2020 Wiley-VCH GmbH
PY - 2021/2
Y1 - 2021/2
N2 - 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.
AB - 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.
KW - Sm
KW - YAG:Ce nanoparticles
KW - nanocomposite phosphors
KW - photoluminescence
KW - tellurite glass
UR - http://www.scopus.com/inward/record.url?scp=85098267074&partnerID=8YFLogxK
U2 - 10.1002/pssa.202000636
DO - 10.1002/pssa.202000636
M3 - Artículo
AN - SCOPUS:85098267074
SN - 1862-6300
VL - 218
JO - Physica Status Solidi (A) Applications and Materials Science
JF - Physica Status Solidi (A) Applications and Materials Science
IS - 4
M1 - 2000636
ER -