title: Resonant and non-resonant energy transfer from Ce3+→ X (X = Tb3+, Eu3+or Dy3+) in NaMgSO4F material.
abstract: An inorganic NaMgSO4F fluoride material was prepared by the wet chemical method and studied for its photoluminescence (PL) and resonant-non-resonant energy transfer (RET and NORET) capabilities between Ce3+→ Tb3+, Ce3+→ Eu3+and Ce3+→ Dy3+rare earth ions. The Tb3+emission for Ce3+→ Tb3+transfers under ultraviolet (UV) wavelengths peaked at 491, 547, and 586 nm, for excitation at 308 nm due to5D4→7FJ(J = 4, 5, 6) transitions. Eu emission spectra were observed at 440 nm (Eu2+), 593 nm and 616 nm (Eu3+) recorded for different concentrations of materials, whereas Dy3+emission from Ce3+→ Dy3+transfer under UV wavelengths peaked at 485 nm and 577 nm due to4F9/2→6H15/2and6H13/2transitions. The purpose of the present study is to understand the RET and NORET effects of Tb3+, Eu3+and Dy3+co-doping in a NaMgSO4F:Ce3+luminescent material, which could be used as a green-emitting material for lamp phosphors.
authors: Department of Physics, SRMCEW, Nadanvan, Nagpur, 440009, Maharashtra, India.
authors: S R
authors: SR
authors: Choubey
authors: Department of Physics, K.Z.S. Science College, Kalmeshwar, Nagpur, 441501, Maharashtra, India.
authors: S C
authors: SC
authors: Gedam
authors: Department of Physics, RTM Nagpur University, Nagpur, 440033, Maharashtra, India.
authors: S J
authors: SJ
authors: Dhoble
mesh_terms: D002563:Cerium; D004735:Energy Transfer; D005459:Fluorides / Q000737:chemistry*; D049449:Luminescence; D008274:Magnesium / Q000737:chemistry*; D008674:Metals, Rare Earth / Q000737:chemistry*; D055668:Photochemical Processes; D012964:Sodium / Q000737:chemistry*; D013431:Sulfates / Q000737:chemistry*
chemical_list: D008674:Metals, Rare Earth; D013431:Sulfates; D002563:Cerium; D012964:Sodium; D008274:Magnesium; D005459:Fluorides
keywords: energy transfer; inorganic compound; luminescence; phosphor; resonant and non-resonant process; spectroscopy