title: Tunable luminescence and energy transfer in Ca3SiO4Cl2:Ce3+,Li+,Mn2+,Eu2+phosphors.
abstract: A series of color-tunable Ca3-2x-y-zSiO4Cl2(CSC):xCe3+,xLi+,yMn2+,zEu2+phosphors with low temperature phase structure was synthesized via the sol-gel method. An energy transfer process from Ce3+to Mn2+in CSC:0.01Ce3+,0.01Li+,yMn2+(y = 0.03-0.09) and the mechanism was verified to be an electric dipole-dipole interaction. The Ce3+and Mn2+emission intensities were greatly enhanced by co-doping Eu2+ions into CSC:0.01Ce3+,0.01Li+,0.07Mn2+phosphors due to competitive energy transfers from Eu2+/Ce3+to Mn2+, and Ce3+to Eu2+. Under 332 nm excitation, CSC:0.01Ce3+,0.01Li+,0.07Mn2+,zEu2+(z = 0.0005-0.002) exhibited tunable emission colors from green to white with coexisting orange, green and violet-blue emissions. These phosphors could have potential application in white light-emitting diodes.
authors.affiliation: Institute of Materials Science and Engineering, Fuzhou University, Fuzhou, China.
authors.forename: Xiangqi
authors.identifier: http://orcid.org/0000-0002-3303-5774
authors.initials: X
authors.lastname: Li
authors.affiliation: Institute of Materials Science and Engineering, Fuzhou University, Fuzhou, China.
authors.forename: Xiuzhen
authors.initials: X
authors.lastname: Xie
authors.affiliation: Institute of Materials Science and Engineering, Fuzhou University, Fuzhou, China.
authors.forename: Haiting
authors.initials: H
authors.lastname: Wei
authors.affiliation: Institute of Materials Science and Engineering, Fuzhou University, Fuzhou, China.
authors.forename: Minzhen
authors.initials: M
authors.lastname: Zhong
mesh_terms: D002563:Cerium / Q000737:chemistry*; D004735:Energy Transfer; D005063:Europium / Q000737:chemistry*; D008094:Lithium / Q000737:chemistry*; D049449:Luminescence; D049408:Luminescent Agents / Q000737:chemistry*; D008345:Manganese / Q000737:chemistry*
chemical_list: D049408:Luminescent Agents; D002563:Cerium; D008345:Manganese; D005063:Europium; D008094:Lithium
keywords: Ca3SiO4Cl2; energy transfer; single-phase phosphors; tunable color