title: Luminescence properties of red-emission Mg4 Nb2 O9:Eu3+ phosphor.
abstract: 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.
authors.affiliation: Departments of Physics, Jinggangshan University, Ji'an, 343009, China.
authors.forename: Renping
authors.initials: R
authors.lastname: Cao
authors.forename: Chunyan
authors.initials: C
authors.lastname: Cao
authors.forename: Xiaoguang
authors.initials: X
authors.lastname: Yu
authors.forename: Jianrong
authors.initials: J
authors.lastname: Qiu
mesh_terms: D005063:Europium / Q000737:chemistry*; D049449:Luminescence; D049408:Luminescent Agents / Q000138:chemical synthesis / Q000737:chemistry*; D008274:Magnesium / Q000737:chemistry*; D009556:Niobium / Q000737:chemistry*; D010100:Oxygen / Q000737:chemistry*; D033362:Powder Diffraction; D013050:Spectrometry, Fluorescence; D013696:Temperature
chemical_list: D049408:Luminescent Agents; D009556:Niobium; D005063:Europium; D008274:Magnesium; D010100:Oxygen
keywords: luminescence; optical materials; optical properties; solid state reaction