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A far-red emission (Ca,Sr)14Zn6Ga10O35:Mn4+ phosphor for potential application in plant-growth LEDs

Abstract

To facilitate the phosphor-converted Light-emitting diodes (LEDs) for plant growth, development of phosphor materials with efficient red or far-red emission is essential. This paper reports a novel Ca13.6Sr0.4Zn6Ga9.85O35:0.15Mn4+ (CSZG:Mn4+) phosphor with far-red emission synthesized via traditional solid-state reaction. The structure, morphology and the effect of dopant concentration on the photoluminescence properties of CSZG:Mn4+ were systematically investigated. These phosphors can efficiently be excited by near-ultraviolet (NUV)/blue LED chips, and exhibit highly efficient red emission in the range of 650~760nm, which matched well with the absorption band of phytochrome. As-fabricated LED that was combined CSZG:Mn4+ phosphor with 460nm blue InGaN chip emits bright blue and red light. Owing to the high quantum efficiency (QE) value (~ 75.8% ), excellent thermal stabilities (~97.9% at 425K relative to that at RT), as well non-rare earth and mild preparation conditions, the CSZG:Mn4+ phosphors have great potentials to be serviced as far-red emission phosphors in high-power plant growth LEDs.

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Publication details

The article was received on 16 Sep 2018, accepted on 09 Oct 2018 and first published on 10 Oct 2018


Article type: Paper
DOI: 10.1039/C8DT03740J
Citation: Dalton Trans., 2018, Accepted Manuscript
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    A far-red emission (Ca,Sr)14Zn6Ga10O35:Mn4+ phosphor for potential application in plant-growth LEDs

    Y. Wu, Y. Lv, K. ruan and Z. Xie, Dalton Trans., 2018, Accepted Manuscript , DOI: 10.1039/C8DT03740J

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