Eu3+-doped Mg6BP5O20 phosphors are prepared by solution combustion method. In this study, we investigate the microstructure and photoluminescence properties of Mg6-xBP5O20 : xEu(3+) (0.025 <= x <= 0.1) phosphors, depending on Eu3+ content. The Mg6-x BP5O20 : xEu(3+) phosphors show high-quality powder characteristics, i.e., small size, spherical morphology, and narrow particle size distribution. The Mg6-xBP5O20 : xEu(3+) is effectively excited by near-UV (about 397 nm) and then emits red light. Mg5.925BP5O20 : 0.075Eu(3+) phosphor shows the strongest emission intensity among prepared phosphors. The Mg6-xBP5O20 : xEu(3+) is strongly desirable as a red phosphor for white light-emitting diodes.

Keywords: Phosphor LEDs; Eu3+-doped phosphor; 4f-4f transition; Phosphates