Luminescence properties of red‐emission Mg 4 Nb 2 O 9 :Eu 3+ phosphor

Red‐emitting Mg 4 Nb 2 O 9 :Eu 3+ phosphor is synthesized via a solid‐state reaction method in air, and its crystal structure and luminescence are investigated. The phosphor can be excited efficiently by ~ 395 nm light, coupled well with a ~ 395 nm near‐ultraviolet chip and emits red light at ~ 613 nm with sharp spectra due to 5 D 0  →  7   F 2 transition of the Eu 3+ ion. Mg 4 Nb 2 O 9 :Eu 3+ phosphor sintered at 1350 ºC shows Commission international de I'Eclairage (CIE) chromaticity coordinates of x  = 0.6354, y  = 0.3592, and is a potential red‐emitting phosphor candidate for white light‐emitting diodes (W‐LEDs) under ~ 395 nm near‐ultraviolet LED chip excitation. Copyright © 2014 John Wiley & Sons, Ltd.