Melt-quenching synthesis and spectral tuning of a new green-emitting phosphor Ba<sub>10</sub>Y<sub>26</sub>Si<sub>16</sub>O<sub>81</sub>:Eu<sup>2+</sup>

A new green-emitting phosphor Ba10Y26Si16O81:Eu2+ was successfully synthesized via a melt-quenching technique. The crystal structure of the Ba10Y26Si16O81:Eu2+ phosphor was confirmed by single-crystal X-ray diffraction (XRD) analysis. The photoluminescence (PL) characterization revealed that the Ba10Y26Si16O81:Eu2+ phosphors exhibit yellowish green emission peaking at about 540 nm under near-UV (n-UV) irradiation. The emission spectra can be tuned by the incorporation of Mg2+ ions.