Issue 78, 2017

Synthesis, structure and optical performance of red-emitting phosphor Ba5AlF13:Mn4+

Abstract

Mn4+-activated cubic phase Ba5AlF13 red phosphors were prepared by the two-step coprecipitation method. The structural and optical features were characterized on the basis of X-ray diffraction (XRD), transmission electron microscopy (TEM), emission and excitation spectra, and luminescence decay curves. The Ba5AlF13:Mn4+ phosphors can be efficiently excited by near-UV to blue light and exhibit bright red emission at around 627 nm, which is assigned to the 2Eg4A2g transition of the 3d3 electrons in [MnF6] octahedra. Temperature dependent emission spectra and decay curves from 10 to 550 K were measured to deeply understand the luminescence mechanism of Mn4+ in the Ba5AlF13 lattice. Notably, this novel red phosphor shows excellent anti-thermal quenching behaviour (∼700% of emission intensity at 300 K relative to 10 K).

Graphical abstract: Synthesis, structure and optical performance of red-emitting phosphor Ba5AlF13:Mn4+

Associated articles

Article information

Article type
Paper
Submitted
11 Aug 2017
Accepted
28 Sep 2017
First published
24 Oct 2017
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2017,7, 49473-49479

Synthesis, structure and optical performance of red-emitting phosphor Ba5AlF13:Mn4+

L. Qin, P. Cai, C. Chen, J. Wang and H. J. Seo, RSC Adv., 2017, 7, 49473 DOI: 10.1039/C7RA08883C

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