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Issue 69, 2018, Issue in Progress
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Novel far-red-emitting SrGdAlO4:Mn4+ phosphors with excellent responsiveness to phytochrome PFR for plant growth lighting

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Abstract

In this work, we reported on novel far-red-emitting SrGdAlO4:Mn4+ (SGA:Mn4+) phosphors towards application in plant growth lighting. The crystal structure and luminescence properties were investigated on the basis of X-ray diffraction, excitation and emission spectra, luminescence decay curves and temperature-dependent photoluminescence spectra. When excited by 353 nm, the SGA:Mn4+ phosphors showed a far-red emission band in the 650–800 nm wavelength range with peaks at 709 and 725 nm, which was due to the 2Eg4A2g electron transition of Mn4+ ion. The optimal Mn4+ doping concentration was about 0.1 mol%. The CIE chromaticity coordinates of the SGA:0.1%Mn4+ sample were (0.7064, 0.2934). The luminescence decay lifetimes decreased gradually from 1.263 to 0.868 ms with the increasing Mn4+ concentrations. Notably, the emission band of SGA:0.1%Mn4+ sample was well-matched with the absorption spectrum of phytochrome PFR, which indicated the SGA:Mn4+ were potential far-red-emitting phosphors for plant growth applications.

Graphical abstract: Novel far-red-emitting SrGdAlO4:Mn4+ phosphors with excellent responsiveness to phytochrome PFR for plant growth lighting

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Article information


Submitted
16 Oct 2018
Accepted
19 Nov 2018
First published
26 Nov 2018

This article is Open Access

RSC Adv., 2018,8, 39307-39313
Article type
Paper

Novel far-red-emitting SrGdAlO4:Mn4+ phosphors with excellent responsiveness to phytochrome PFR for plant growth lighting

Q. Sun, S. Wang, B. Devakumar, B. Li, L. Sun, J. Liang, D. Chen and X. Huang, RSC Adv., 2018, 8, 39307
DOI: 10.1039/C8RA08551J

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