Luminescence properties of red-emission Mg4 Nb2 O9:Eu3+ phosphor.
Red-emitting Mg4 Nb2 O9 :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) D0  → (7)  F2 transition of the Eu(3+) ion. Mg4 Nb2 O9 :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.
['Cao|Renping|R|', 'Cao|Chunyan|C|', 'Yu|Xiaoguang|X|', 'Qiu|Jianrong|J|']
D005063:Europium D049449:Luminescence D049408:Luminescent Agents D008274:Magnesium D009556:Niobium D010100:Oxygen D033362:Powder Diffraction D013050:Spectrometry, Fluorescence D013696:Temperature
luminescence optical materials optical properties solid state reaction