title: Luminescence and energy transfer of tunable emission phosphor Ca2PO4Cl:Ce(3+), Mn(2+).
abstract: A series of Ca2PO4Cl:Ce(3+), Mn(2+) phosphors are synthesized by a high temperature solid state reaction method, and their luminescent properties are investigated. Ca2PO4Cl:Ce(3+), Mn(2+) has an obvious absorption in the region of 300-350 nm, and energy transfer from Ce(3+) to Mn(2+) in Ca2PO4Cl has been validated, and proved to be a resonant type via a dipole-dipole interaction. Orange red emission intensity of Mn(2+) can be obviously enhanced via the efficient energy transfer from Ce(3+) to Mn(2+), and critical distance of energy transfer is also calculated by concentration quenching method, and about 14.1 Å. The results show that Ce(3+) ion may be an available sensitizer for Ca2PO4Cl:Mn(2+), and Ca2PO4Cl:Ce(3+), Mn(2+) may have potential application in white light emitting diodes.
authors.affiliation: College of Physics Science & Technology, Hebei University, Baoding 071002, China.
authors.forename: Zhijun
authors.initials: Z
authors.lastname: Wang
authors.affiliation: College of Physics Science & Technology, Hebei University, Baoding 071002, China. Electronic address: li_panlai@126.com.
authors.forename: Panlai
authors.initials: P
authors.lastname: Li
authors.affiliation: College of Physics Science & Technology, Hebei University, Baoding 071002, China.
authors.forename: Qinglin
authors.initials: Q
authors.lastname: Guo
authors.affiliation: College of Physics Science & Technology, Hebei University, Baoding 071002, China.
authors.forename: Zhiping
authors.initials: Z
authors.lastname: Yang
mesh_terms: D002122:Calcium Chloride / Q000737:chemistry*; D002563:Cerium / Q000737:chemistry*; D007477:Ions; D008027:Light; D049449:Luminescence; D008345:Manganese / Q000737:chemistry*; D055095:Optics and Photonics; D010758:Phosphorus / Q000737:chemistry; D010777:Photochemistry; D013050:Spectrometry, Fluorescence; D013056:Spectrophotometry, Ultraviolet; D013696:Temperature; D014466:Ultraviolet Rays; D014961:X-Ray Diffraction
chemical_list: D007477:Ions; D010758:Phosphorus; D002563:Cerium; D008345:Manganese; D002122:Calcium Chloride
keywords: Halides; Luminescence; Optical materials; Optical properties; Phosphors