Issue 10, 2021

Glycothermal synthesis and photoluminescence of Mg–Si modified Ce:YAG nanophosphors

Abstract

The absorption spectrum of Ce in a YAG based host grown using the glycothermal method was modified using the addition of Mg–Si pairs. Photoluminescence intensity was dramatically improved by increasing the reaction temperature to 315 °C instead of the conventionally used 300 °C. It was found that Mg acetate and tetraethylorthosilicate (TEOS) are suitable as precursors for the glycothermal process, as EDS elemental mapping showed their homogeneous inclusion in the final product. Their addition only slightly modified the emission spectrum of Ce:YAG. It was found that increasing the reaction temperature to 315 °C yielded nanoparticles 56 ± 16 nm in size with a 3.3× enhancement in absorption and 3.7× enhancement in emission intensities compared to samples synthesized at 300 °C, and an increase in photoluminescence quantum yield from 32% to 48%. Reaction kinetics of the precursors and a proposed route for post-synthesis surface functionalization are discussed.

Graphical abstract: Glycothermal synthesis and photoluminescence of Mg–Si modified Ce:YAG nanophosphors

Supplementary files

Article information

Article type
Paper
Submitted
21 Jan 2021
Accepted
24 Mar 2021
First published
31 Mar 2021
This article is Open Access
Creative Commons BY license

Nanoscale Adv., 2021,3, 2911-2917

Glycothermal synthesis and photoluminescence of Mg–Si modified Ce:YAG nanophosphors

S. Peter, M. Fitzpatrick and A. Kitai, Nanoscale Adv., 2021, 3, 2911 DOI: 10.1039/D1NA00060H

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