title: Tunable emission, energy transfer and charge compensation in SrMoO4:Sm(3+),Tb(3+),Na(+) phosphor.
abstract: A series of SrMoO4:Sm(3+),Tb(3+),Na(+) phosphors was synthesized using a high-temperature solid-state reaction method in air. On excitation at 290 nm, SrMoO4:Sm(3+),Tb(3+) phosphor emitted light that varied systematically from green to reddish-orange on changing the Sm(3+) and Tb(3+) ion concentrations. The emission intensities of SrMoO4:Sm(3+) and SrMoO4:Sm(3+),Tb(3+) phosphors were increased two to four times due to charge compensation when Na(+) was added as a charge compensator. The luminescence mechanism and energy transfer could be explained using energy-level diagrams of the MoO4(2-) group, Sm(3+) and Tb(3+) ions. SrMoO4:Sm(3+),Tb(3+),Na(+) could be used as reddish-orange phosphor in white light-emitting diodes (LEDs) based on an ~ 405 nm near-UV LED chip. This research is helpful in adjusting and improving the luminescence properties of other phosphors.
authors.affiliation: College of Mathematics and Physics, Jinggangshan University, Ji'an, 343009, China.
authors.forename: Renping
authors.initials: R
authors.lastname: Cao
authors.affiliation: College of Mathematics and Physics, Jinggangshan University, Ji'an, 343009, China.
authors.forename: Kangbin
authors.initials: K
authors.lastname: Chen
authors.affiliation: College of Pharmacology and Life Science, Jiujiang University, Jiujiang, 332000, China.
authors.forename: Shenhua
authors.initials: S
authors.lastname: Jiang
authors.affiliation: College of Mechanical Manufacture and Automation, Jinggangshan University, Ji'an, 343009, China.
authors.forename: Zhiyang
authors.initials: Z
authors.lastname: Luo
authors.affiliation: College of Mathematics and Physics, Jinggangshan University, Ji'an, 343009, China.
authors.forename: Xiaoguang
authors.initials: X
authors.lastname: Yu
authors.affiliation: Scientific Research Office, Jinggangshan University, Ji'an, 343009, China.
authors.forename: Pan
authors.initials: P
authors.lastname: Liu
mesh_terms: D004735:Energy Transfer; D049449:Luminescence; D008345:Manganese / Q000737:chemistry*; D010100:Oxygen / Q000737:chemistry*; D012493:Samarium / Q000737:chemistry*; D012964:Sodium / Q000737:chemistry*; D013324:Strontium / Q000737:chemistry*; D013725:Terbium / Q000737:chemistry*
chemical_list: D013725:Terbium; D012493:Samarium; D008345:Manganese; D012964:Sodium; D010100:Oxygen; D013324:Strontium
keywords: charge compensation; energy transfer; phosphor; tunable emission