YAGG:Ce transparent ceramics with high luminous efficiency for solid-state lighting application

There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

Abstract

A series of Y _2.985Al _5–xGa _xO ₁₂:0.015Ce (YAGG:Ce, x = 0, 1, 2, 3, 4, 5) transparent ceramics were prepared via a solid-state reaction method. Two-step sintering technique was proved to be an effective approach to prepare functional ceramics with high Ga concentration, and Y ₃Ga ₅O ₁₂ (YGG) transparent ceramic was successfully prepared for the first time. According to the variation of Al/Ga ratio, regulation of band structure and luminescence properties of YAGG:Ce transparent ceramics were effectively investigated. When Ga substitutes Al sites, the tetrahedral site is more favorable compared to the octahedral site for Ga to occupy according to the first-principle calculation. A continuous blue shift of the emission from 565 to 515 nm was achieved as Ga was gradually introduced into Y ₃Al ₅O ₁₂:Ce matrix. High quality green light was obtained by coupling the YAGG:Ce ceramics with commercial blue InGaN chips. Transparent luminescence ceramics accomplished in this work can be quite prospective for high power LED application.

Author and article information

Journal

Journal ID (publisher-id): J Adv Ceram

Title: Journal of Advanced Ceramics

Publisher: Tsinghua University Press and Springer-Verlag Berlin Heidelberg (USA )

ISSN (Electronic): 2227-8508

ISSN (Print): 2226-4108

Publication date (Print): 01 September 2019

Publication date (Electronic): 01 October 2019

Volume: 8

Issue: 3

Pages: 389-398

Affiliations

[1] ^aSchool of Materials Science and Engineering, Shanghai University, Shanghai 200072, China

[2] ^bNingbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China

[3] ^cSchool of Materials Science and Engineering, Tianjin University, Tianjin 300072, China

Author notes

*Corresponding authors: H. Qin, qinhaiming@ 123456nimte.ac.cn ; Z. Zhang, zhangzhijun@ 123456shu.edu.cn ; J. Jiang, jjun@ 123456nimte.ac.cn

† These authors contributed equally to this work.

Article

Publisher ID: s40145-019-0321-9

DOI: 10.1007/s40145-019-0321-9

SO-VID: dd58bdeb-ac82-4893-ad70-5105910d6aa7

License:

This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. See https://creativecommons.org/licenses/by/4.0/.

History

Date received : 23 November 2018

Date revision received : 23 January 2019

Date accepted : 09 February 2019

Comments

Comment on this article

scite_

Cited by 3

See all cited by