Synthesis and luminescence characterization of a new yellowish-orange phosphor: Ba B O :Sm.

A new yellowish-orange emitting phosphor, Ba B O :Sm 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 Ba B O material was obtained. As a potential yellowish-orange luminescent material for W-LEDs, the Ba B O :Sm phosphor could be excited effectively by near-ultraviolet (n-UV) light and exhibited yellowish-orange emission centered at 560 nm corresponding to the G  →  H transition of Sm ions. The optimum concentration of Sm ions in Ba B O , critical transfer distance (Ra) and concentration quenching mechanism of the presented phosphor were investigated. Moreover, CIE chromaticity coordinates and color purity performance of the Ba B O :Sm phosphor were also discussed. The present work suggests that the Ba B O :Sm phosphor has potential as a type of yellowish-orange emitting phosphor. Copyright © 2016 John Wiley & Sons, Ltd.