文摘
A new yellowish-orange emitting phosphor, Ba2B10O17:Sm3+ for use as a white light-emitting diode (W-LED) was synthesized by a solid-state reaction method. The X-ray diffraction results indicated that a pure Ba2B10O17 material was obtained. As a potential yellowish-orange luminescent material for W-LEDs, the Ba2B10O17:Sm3+ phosphor could be excited effectively by near-ultraviolet (n-UV) light and exhibited yellowish-orange emission centered at 560 nm corresponding to the 4G5/2 → 6H5/2 transition of Sm3+ ions. The optimum concentration of Sm3+ ions in Ba2B10O17, critical transfer distance (Ra) and concentration quenching mechanism of the presented phosphor were investigated. Moreover, CIE chromaticity coordinates and color purity performance of the Ba2B10O17:Sm3+ phosphor were also discussed. The present work suggests that the Ba2B10O17:Sm3+ phosphor has potential as a type of yellowish-orange emitting phosphor. Copyright