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Modified optical properties via induced cation disorders in self-activated NaMg2V3O10

Abstract

The cation-disorder in the phosphor lattice could be one of the effective approaches to modify the luminescence efficiency. In this work, cation substitutions of (Mo6+→V5+) and (Na+→Mg2+) were conducted in the self-activated NaMg2V3O10. All the samples of Na1+xMg2-xV3-xMoxO10 (x=0, 0.01, 0.05, 0.1, 0.2, 0.3) were prepared via solid-state reaction synthesis. The morphology properties were measured via SEM and EDS analyses. The structural Rietveld refinements were performed to investigate the microstructure in the lattices. The cation substitution brings out the structure disorder in the phosphor, which exerts great modifications on the luminescence properties. NaMg2V3O10 presents an intrinsic indirect transition with band gap of 3.22 eV. The incorporation of Mo6+ and Na+ in the lattices moves the optical absorption to longer wavelength bringing out the narrower band gap. The luminescence intensity, thermal stability and corresponding lifetime were modified with the cation disorder in the self-activated phosphor.

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Publication details

The article was received on 09 Dec 2017, accepted on 10 Feb 2018 and first published on 12 Feb 2018


Article type: Paper
DOI: 10.1039/C7DT04664B
Citation: Dalton Trans., 2018, Accepted Manuscript
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    Modified optical properties via induced cation disorders in self-activated NaMg2V3O10

    L. MI, Y. Huang, L. cao, Y. Feng and H. J. Seo, Dalton Trans., 2018, Accepted Manuscript , DOI: 10.1039/C7DT04664B

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