Jump to main content
Jump to site search

Issue 31, 2019
Previous Article Next Article

Structure and white LED properties of Ce-doped YAG-Al2O3 eutectics grown by the micro-pulling-down method

Author affiliations

Abstract

A series of Ce-doped YAG-Al2O3 eutectics were grown by the micro-pulling-down (μ-PD) method, for the purpose of high power white light emitting diodes. The eutectic structure was investigated. A calibrated integrating sphere spectrometer setup was used to measure the white LED properties of eutectic samples. The CIE color coordinates can be regulated easily by altering the Ce3+ doping concentration and sample thickness of the Ce:YAG-Al2O3 eutectics. A 1 W white LED device based on Ce:YAG-Al2O3 eutectics at a rated current of 350 mA emitted a bright white light with a CIE coordinate of (0.319, 0.334), a luminous efficacy of 83.0 lm W−1 and a Duv value of 0.003. The results showed that Ce:YAG-Al2O3 eutectics have better luminescence properties than commercial powder phosphors at a high current density.

Graphical abstract: Structure and white LED properties of Ce-doped YAG-Al2O3 eutectics grown by the micro-pulling-down method

Back to tab navigation

Article information


Submitted
08 May 2019
Accepted
25 Jun 2019
First published
26 Jun 2019

CrystEngComm, 2019,21, 4545-4550
Article type
Paper

Structure and white LED properties of Ce-doped YAG-Al2O3 eutectics grown by the micro-pulling-down method

Q. Song, X. Xu, J. Liu, X. Bu, D. Li, P. Liu, Y. Wang, J. Xu and K. Lebbou, CrystEngComm, 2019, 21, 4545 DOI: 10.1039/C9CE00703B

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

Search articles by author

Spotlight

Advertisements