Issue 35, 2017

Facile synthesis of monodisperse YAG:Ce3+ microspheres with high quantum yield via an epoxide-driven sol–gel route

Abstract

Spherical cerium-doped yttrium aluminum garnet (YAG:Ce3+) phosphor particles can achieve both higher packing densities and lower scattering of light, and thus make it possible to obtain excellent white-light-emitting diode performance. In this study, monodisperse YAG:Ce3+ microspheres have been synthesized through a fast epoxide-driven sol–gel route and subsequent heat treatment under a reducing atmosphere. The spherical morphology was mainly influenced by the phase separation and gelation process, which could be controlled by the ratio of water/ethanol. Pluronic F127 was introduced into the sol–gel system to control the size of the YAG:Ce3+ microspheres, which significantly increased the luminescence intensity of the YAG:Ce3+ microspheres. The luminescence quantum yield of the 6 mol% Ce3+ ion doped YAG microspheres was measured to be more than 90%, which was as high as that of commercial YAG:Ce3+ phosphors. This approach may be readily applied to prepare a broad range of rare earth doped microspheres, implying a new route for the preparation of LEDs phosphors with regular shape and high quantum yield.

Graphical abstract: Facile synthesis of monodisperse YAG:Ce3+ microspheres with high quantum yield via an epoxide-driven sol–gel route

Article information

Article type
Paper
Submitted
29 Jūn. 2017
Accepted
04 Aug. 2017
First published
04 Aug. 2017

J. Mater. Chem. C, 2017,5, 8952-8957

Facile synthesis of monodisperse YAG:Ce3+ microspheres with high quantum yield via an epoxide-driven sol–gel route

Y. Zhang, X. Qiao, J. Wan, L. Wu, B. Chen and X. Fan, J. Mater. Chem. C, 2017, 5, 8952 DOI: 10.1039/C7TC02909H

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements