title: Eu3+-activated Y2MoO6: a narrow band red-emitting phosphor with strong near-UV absorption.
abstract: Near-UV excited narrow line red-emitting phosphors, Eu(3+)-activated Y2MoO6 systems, were synthesized using a simple molten salt reaction. The structure and photoluminescence characteristics were investigated using X-ray powder diffraction, UV-Vis absorption and fluorescent spectrophotometry. The excitation spectra show strong broad-band absorptions in the near-UV to blue light regions which match the radiation of near-UV light-emitting diode chips well. Under excitation of either near-UV or blue light, intense red emission with a main peak of 611 nm is observed, ascribed to the (5)D0-(7)F2 transition of Eu(3+) ions; the optimal doping concentration is 20 mol%. The chromaticity coordinates (x = 0.65, y = 0.34) of the as-obtained phosphor are very close to the National Television Standard Committee standard values (x = 0.67, y = 0.33). All these characteristics suggest that this material is a promising red-emitting phosphor candidate for white-LEDs based on near-UV LED chips.
authors.affiliation: School of Chemistry and Environmental Engineering, Jiangsu Teachers University of Technology, Changzhou, Jiangsu, 213001, People's Republic of China.
authors.forename: Xianghong
authors.initials: X
authors.lastname: He
authors.forename: Danping
authors.initials: D
authors.lastname: Bian
authors.forename: Hao
authors.initials: H
authors.lastname: Wang
authors.forename: Jian
authors.initials: J
authors.lastname: Xu
mesh_terms: D003116:Color; D005063:Europium / Q000737:chemistry*; D049408:Luminescent Agents / Q000737:chemistry*; D008163:Luminescent Measurements; D008982:Molybdenum / Q000737:chemistry*; D010100:Oxygen / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet; D014466:Ultraviolet Rays; D015019:Yttrium / Q000737:chemistry*
chemical_list: D049408:Luminescent Agents; D005063:Europium; D015019:Yttrium; D008982:Molybdenum; D010100:Oxygen
keywords: Eu3+-activated Y2MoO6 phosphor; narrow band; near-UV absorption; red-emitting; white-LEDs