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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

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.

Original languageEnglish
Article number2000636
JournalPhysica Status Solidi (A) Applications and Materials Science
Volume218
Issue number4
DOIs
StatePublished - Feb 2021

Bibliographical note

Funding Information:
The authors wish to thank CONACyT for its support through the project Cátedra CONACyT 1959.

Publisher Copyright:
© 2020 Wiley-VCH GmbH

Keywords

  • Sm
  • YAG:Ce nanoparticles
  • nanocomposite phosphors
  • photoluminescence
  • tellurite glass

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