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Issue 30, 2016
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Host-sensitized luminescence properties of KLa5O5(VO4)2:Eu3+ for solid-state lighting applications

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Abstract

A novel KLa5O5(VO4)2 blue-emitting phosphor was synthesized and studied in this paper. The introduction of Eu3+ at various concentrations into the host crystal structure is possible through solid-state synthesis and was followed by X-ray diffraction. In this context, KLa5O5(VO4)2 can be considered as an excellent host matrix to develop new phosphors. In the present work, the luminescence properties of KLa5−xEuxO5(VO4)2 (x = 0, 0.05, 0.1, 0.5, 1, 1.5 and 2) were investigated by fluorescence spectroscopy. The photoluminescence (PL) and PL excitation (PLE) spectra were recorded and discussed. KLa5−xEuxO5(VO4)2 phosphors exhibit a bright reddish-orange light emission under UV excitation. The concentration quenching was determined to be at 20 mol% (x = 1) of Eu3+. The KLa4EuO5(VO4)2 phosphor cleverly substituted is an ideal candidate for solid-state lighting and especially, as a red phosphor for near-UV LEDs or to serve as the primary light source for white LEDs.

Graphical abstract: Host-sensitized luminescence properties of KLa5O5(VO4)2:Eu3+ for solid-state lighting applications

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Publication details

The article was received on 01 Jun 2016, accepted on 25 Jun 2016 and first published on 27 Jun 2016


Article type: Paper
DOI: 10.1039/C6TC02258H
Citation: J. Mater. Chem. C, 2016,4, 7277-7285
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    Host-sensitized luminescence properties of KLa5O5(VO4)2:Eu3+ for solid-state lighting applications

    M. Colmont, S. Saitzek, A. Katelnikovas, H. Kabbour, J. Olchowka and P. Roussel, J. Mater. Chem. C, 2016, 4, 7277
    DOI: 10.1039/C6TC02258H

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