title: Photoluminescence properties of a new orange-red-emitting Sm(3+)-La3SbO7 phosphor.
abstract: The antimonate compound La3SbO7 has high chemical stability, lattice stiffness and thermal stability. Orange-red-emitting antimonate-based phosphors La3SbO7:xSm(3+) (x = 0.02, 0.05, 0.08, 0.10, 0.15, 0.20 and 0.25) were synthesized. The phase structure and photoluminescence properties of these phosphors were investigated. The emission spectrum obtained on excitation at 407 nm contained exclusively the characteristic emissions of Sm(3+) at 568, 608, 654 and 716 nm, which correspond to the transitions from (4)G5/2 to (6)H5/2, (6)H7/2, (6)H9/2 and (6)H11/2 of Sm(3+), respectively. The strongest emission was located at 608 nm due to the (4)G5/2→(6)H7/2 transition of Sm(3+), generating bright orange-red light. The critical quenching concentration of Sm(3+) in La3SbO7:Sm(3+) phosphor was determined as 10% and the energy transfer between Sm(3+) was found to be through an exchange interaction. The International Commission on Illumination chromaticity coordinates of the La3SbO7:0.10Sm(3+) phosphors are located in the orange-red region. The La3SbO7:Sm(3+) phosphors may be potentially used as red phosphors for white light-emitting diodes.
authors.affiliation: Institute of Agricultural Quality Standards and Testing Technology Research, Shandong Academy of Agricultural Sciences, Jinan, 250100, People's Republic of China.
authors.forename: Zeng-Mei
authors.initials: ZM
authors.lastname: Li
authors.affiliation: Institute of Agricultural Quality Standards and Testing Technology Research, Shandong Academy of Agricultural Sciences, Jinan, 250100, People's Republic of China.
authors.forename: Li-Gang
authors.initials: LG
authors.lastname: Deng
authors.affiliation: Institute of Agricultural Quality Standards and Testing Technology Research, Shandong Academy of Agricultural Sciences, Jinan, 250100, People's Republic of China.
authors.forename: Shan-Cang
authors.initials: SC
authors.lastname: Zhao
authors.affiliation: Institute of Agricultural Quality Standards and Testing Technology Research, Shandong Academy of Agricultural Sciences, Jinan, 250100, People's Republic of China.
authors.forename: Shu-Qiu
authors.initials: SQ
authors.lastname: Zhang
authors.affiliation: Institute of Agricultural Quality Standards and Testing Technology Research, Shandong Academy of Agricultural Sciences, Jinan, 250100, People's Republic of China.
authors.forename: Chang-Ying
authors.initials: CY
authors.lastname: Guo
authors.affiliation: Institute of Agricultural Quality Standards and Testing Technology Research, Shandong Academy of Agricultural Sciences, Jinan, 250100, People's Republic of China.
authors.forename: Jing-Yun
authors.initials: JY
authors.lastname: Liang
authors.affiliation: Institute of Agricultural Quality Standards and Testing Technology Research, Shandong Academy of Agricultural Sciences, Jinan, 250100, People's Republic of China.
authors.forename: Hui
authors.initials: H
authors.lastname: Yue
authors.affiliation: Institute of Agricultural Quality Standards and Testing Technology Research, Shandong Academy of Agricultural Sciences, Jinan, 250100, People's Republic of China.
authors.forename: Chun-Yan
authors.initials: CY
authors.lastname: Wan
mesh_terms: D000965:Antimony / Q000737:chemistry*; D007811:Lanthanum / Q000737:chemistry*; D049449:Luminescence; D010100:Oxygen / Q000737:chemistry*; D055668:Photochemical Processes; D012493:Samarium / Q000737:chemistry*
chemical_list: D012493:Samarium; D007811:Lanthanum; D000965:Antimony; D010100:Oxygen
keywords: Sm3+; antimonite; phosphor; photoluminescence