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Eu2+ doped Sr2-xBaxSi5N8 phosphors were synthesized at 1610℃ for 4h via the solid-state reaction method. The XRD results confirm that the complete solid solutions are formed. With the increase of x, the emission spectra show an obvious blue-shift from 610nm to 585nm under the excitation of 460nm. The color tone can be tuned from yellow to red. The corresponding mechanism for the blue-shift of peak-wavelength...
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