Issue 29, 2017, Issue in Progress

Mn2+ doped CdAl2O4 phosphors with new structure and special fluorescence properties: experimental and theoretical analysis

Abstract

Mn2+-activated CdAl2O4 phosphors with the new structure of space group R[3 with combining macron] (no. 148) have been prepared by a high-temperature solid-state reaction and their luminescence properties have been investigated in detail. The reduction of Mn4+ to Mn2+ in air atmosphere has been observed in CdAl2O4 powders for the first time. The structural properties including the phase purity and structural parameters were analyzed through Rietveld analysis. The typical transitions of Mn2+ ions in emission and excitation spectra were observed both in MnCO3 and MnO2 prepared CdAl2O4:0.01Mn2+ phosphors, which means that the luminescent centers of Mn2+ ions were from the Mn4+ ions which were reduced. Meanwhile, the energy band structures of CdAl2O4 and CdAl2O4:Mn2+ were measured with an ultraviolet-visible diffuse reflection spectroscopy (UV-vis DRS), the electronic structures were calculated using the plane-wave density functional theory (DFT). The Mn2+ activated CdAl2O4:Mn2+ phosphor prepared in air atmosphere is a potential blue-green emitting phosphor.

Graphical abstract: Mn2+ doped CdAl2O4 phosphors with new structure and special fluorescence properties: experimental and theoretical analysis

Supplementary files

Article information

Article type
Paper
Submitted
08 Feb 2017
Accepted
14 Mar 2017
First published
21 Mar 2017
This article is Open Access
Creative Commons BY license

RSC Adv., 2017,7, 17612-17619

Mn2+ doped CdAl2O4 phosphors with new structure and special fluorescence properties: experimental and theoretical analysis

W. Ran, L. Wang, Q. Liu, G. Liu, D. Qu, X. Pan and J. Shi, RSC Adv., 2017, 7, 17612 DOI: 10.1039/C7RA01623A

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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