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Dual spectra band emissive Eu2+/Mn2+ co-activated alkaline earth phosphates for indoor plant growth novel phosphor converted-LEDs

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Abstract

This paper reports designing a novel single composition blue/red color illuminating phosphor followed by fabricating “smart” agricultural/horticultural LED lighting. Color-tunable Eu2+/Mn2+ co-activated alkaline earth phosphates, Na(Sr,Ba)PO4 and Ca3Mg3(PO4)4, are considered, and the stable doping sites for the corresponding activators are identified by using first-principle DFT calculations. We can realize the designated color purity with stable thermal quenching preserved luminescence behavior is induced by the Eu2+ center positioned at different coordination states with intermixed Sr2+/Ba2+ sites in Na(Sr,Ba)PO4 hosts. Moreover, we demonstrate that the resultant LED lighting adopting the proposed novel phosphor composition stimulates the enhanced photosynthesis reaction for indoor hydroponics plants, such as oats and onions, which is superior to the narrow line emission band induced by the mixture of conventional red/green/blue LEDs. Thus, using the color-tunable single composition luminescent material may produce an innovative energy-efficient artificial lighting for indoor plant growth.

Graphical abstract: Dual spectra band emissive Eu2+/Mn2+ co-activated alkaline earth phosphates for indoor plant growth novel phosphor converted-LEDs

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Publication details

The article was received on 03 Feb 2017, accepted on 05 Apr 2017 and first published on 20 Apr 2017


Article type: Paper
DOI: 10.1039/C7CP00742F
Citation: Phys. Chem. Chem. Phys., 2017, Advance Article
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    Dual spectra band emissive Eu2+/Mn2+ co-activated alkaline earth phosphates for indoor plant growth novel phosphor converted-LEDs

    Y. J. Yun, J. K. Kim, J. Y. Ju, S. K. Choi, W. I. Park, J. Y. Suh, H. Jung, Y. Kim and S. Choi, Phys. Chem. Chem. Phys., 2017, Advance Article , DOI: 10.1039/C7CP00742F

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