Abstract
A deep red phosphor has been prepared by a conventional solid-state reaction technique. The effects of synthesis temperature and -doped concentration on the luminescent properties and crystal structures of the compound have been investigated. Its excitation wavelength ranging from 440 to 500 nm fits well with the characteristical emission of commercial blue light-emitting diode (LED) chips. The photoluminescence spectra of exhibit deep red emissions, with the strongest emission peak at 649 nm, and show high color purity properties with the color point of (0.685, 0.315). Due to its good excitation and emission performance, the -doped phosphor may be a promising candidate for white LEDs.
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