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Issue 62, 2014
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Eu2+-activated full color orthophosphate phosphors for warm white light-emitting diodes

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Abstract

Eu2+-doped RbBaPO4, NaCaPO4 and CsMgPO4 orthophosphate phosphors were studied. X-ray diffraction (XRD) patterns analysis indicated all of the phosphors could be obtained in a pure phase by the solid-state reaction method. The photoluminescence emission (PL) spectra revealed that the phosphors showed broad-band blue, green and red emission with peaks at near 430 nm, 510 nm and 630 nm under a 340 nm UV lamp, corresponding to RbBaPO4:0.03Eu2+, NaCaPO4:0.01Eu2+ and CsMgPO4:0.07Eu2+ samples, respectively. A white light-emitting diode (w-LED) lamp, fabricated by the three samples combining a 370 nm n-UV chip, presented a high color-rendering index (CRI) of 86, as well as a warm correlated color temperature (CCT) of 2751 K. The results indicated that Eu2+-activated full color versatile orthophosphate phosphors and mixing strategy of the similar hosts will have potential use in the design of white LEDs.

Graphical abstract: Eu2+-activated full color orthophosphate phosphors for warm white light-emitting diodes

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Publication details

The article was received on 12 May 2014, accepted on 15 Jul 2014 and first published on 15 Jul 2014


Article type: Paper
DOI: 10.1039/C4RA04452E
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RSC Adv., 2014,4, 33114-33119

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    Eu2+-activated full color orthophosphate phosphors for warm white light-emitting diodes

    C. Zhao, Z. Xia and M. Li, RSC Adv., 2014, 4, 33114
    DOI: 10.1039/C4RA04452E

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