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Issue 33, 2019
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Electronic and optical properties of a novel fluoroaluminate red phosphor Cs2NaAl3F12:Mn4+ with high color purity for white light-emitting diodes

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Abstract

In this work, a novel fluoroaluminate red phosphor of Cs2NaAl3F12:Mn4+ with excellent color purity was fabricated via the introduction of Mn4+ in the octahedral center. The crystal and electronic structures, luminescence properties and optical performances were characterized and investigated in detail. The evidences showed that Cs2NaAl3F12:Mn4+ well-crystallized into a single phase with particulate morphology, and the non-equivalent occupation in Cs2NaAl3F12 resulted in sharp red emissions with improved color purity upon blue light illumination. For solid-state lighting, the optical parameters consisted of the “blue-yellow-red” contributions significantly improved to a high color-rendering index of 88.7 and a low color temperature of 3856 K, indicating the potential use of Cs2NaAl3F12:Mn4+ for warm white light-emitting diode applications.

Graphical abstract: Electronic and optical properties of a novel fluoroaluminate red phosphor Cs2NaAl3F12:Mn4+ with high color purity for white light-emitting diodes

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Publication details

The article was received on 19 Jun 2019, accepted on 06 Jul 2019 and first published on 25 Jul 2019


Article type: Paper
DOI: 10.1039/C9DT02577D
Dalton Trans., 2019,48, 12459-12465

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    Electronic and optical properties of a novel fluoroaluminate red phosphor Cs2NaAl3F12:Mn4+ with high color purity for white light-emitting diodes

    Z. Liang, Z. Yang, X. Xie, H. Pu, D. Shi, Q. Zhou, Z. Wang, J. Guo and M. Wu, Dalton Trans., 2019, 48, 12459
    DOI: 10.1039/C9DT02577D

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