Issue 24, 2016

Hydrothermal synthesis, morphology and photoluminescent properties of an Mn4+-doped novel red fluoride phosphor elpasolite K2LiAlF6

Abstract

Presently, new red emitting Mn4+ activated fluoride phosphors that are obtained via green synthetic routes remain a great challenge in the field of luminescent materials for advanced applications in solid state lighting and displays. In this study, for the first time, we develop a novel red emitting fluoride phosphor, K2LiAlF6:Mn4+, and it is synthesized in low-toxic H3PO4/KHF2 liquid instead of the highly toxic HF liquid, which is a necessity in the synthesis of fluoride phosphors. Moreover, the morphology and photoluminescence properties of K2LiAlF6:Mn4+ were systematically investigated. The results show that the Mn4+ ion exhibits a broadband excitation extending from 300 to 500 nm, which matches well with UV and blue LED chips and obtains an ideal red emission at 635 nm, due to the similarities in cation site symmetry and host iconicity between the famous K2TiF6 and target K2LiAlF6. Moreover, K2LiAlF6:Mn4+ has an excellent thermal quenching behavior and color stability in the temperature range of 300–500 K, compared with the commercial red nitride phosphor (Sr)CaAlSiN3:Eu2+.

Graphical abstract: Hydrothermal synthesis, morphology and photoluminescent properties of an Mn4+-doped novel red fluoride phosphor elpasolite K2LiAlF6

Article information

Article type
Paper
Submitted
04 Apr 2016
Accepted
12 May 2016
First published
13 May 2016

J. Mater. Chem. C, 2016,4, 5690-5695

Hydrothermal synthesis, morphology and photoluminescent properties of an Mn4+-doped novel red fluoride phosphor elpasolite K2LiAlF6

Y. Zhu, L. Huang, R. Zou, J. Zhang, J. Yu, M. Wu, J. Wang and Q. Su, J. Mater. Chem. C, 2016, 4, 5690 DOI: 10.1039/C6TC01366J

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