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Luminescence properties of Na2SiF6:Mn4+ red phosphors for high colour-rendering white LED applications synthesized via a simple exothermic reduction reaction

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Abstract

Na2SiF6:Mn4+ red phosphor is reported in this paper. Na2SiF6:Mn4+ was synthesized via a simple exothermic reduction reaction approach using Na2SiF6 and NaMnO4 as raw materials. H2O2 was dropped into 0.02 mol Lāˆ’1 of NaMnO4 in HF solution to reduce Mn7+ to Mn4+ at room temperature. The phosphors can produce sharp red emissions in a broad absorption range (from 500 nm to 700 nm). The white LEDs were fabricated with blue GaN chips merged with a mixture of Na2SiF6:Mn4+ and commercial YAG:Ce yellow phosphors for white light.

Graphical abstract: Luminescence properties of Na2SiF6:Mn4+ red phosphors for high colour-rendering white LED applications synthesized via a simple exothermic reduction reaction

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Publication details

The article was received on 02 Nov 2016, accepted on 16 Nov 2016 and first published on 09 Dec 2016


Article type: Research Article
DOI: 10.1039/C6QM00284F
Citation: Mater. Chem. Front., 2017, Advance Article
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    Luminescence properties of Na2SiF6:Mn4+ red phosphors for high colour-rendering white LED applications synthesized via a simple exothermic reduction reaction

    T. Lang, T. Han, L. Peng and M. Tu, Mater. Chem. Front., 2017, Advance Article , DOI: 10.1039/C6QM00284F

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