The photoluminescence of lead and manganese doped magnesium bromide |
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| Institution: | 1. Physical Department, M.V. Lomonosov Moscow State University, 1 Bldg. 2, Leninskie Gory, Moscow 119991, Russia;2. D.V. Skobeltsyn Institute of Nuclear Physics, M.V. Lomonosov Moscow State University, 1 Bldg. 2, Leninskie Gory, Moscow 119991, Russia;3. Southwest State University, 94, 50th Anniversary of October St., Kursk 305040, Russia;1. Physical Chemistry Laboratory for Mineral Materials and Their Applications, National Center for Research in Materials Sciences, Borj Cedria Technopark, Soliman 8027, Tunisia;2. Laboratory of Useful Materials Valuation, National Center for Research in Materials Sciences, Borj Cedria Technopark, BP 73, Soliman 8027, Tunisia;3. Laboratory of Useful Materials, National Insitute of Research and Physicochemical Analysis, Technopole Sidi Thabet, Ariana 2020, Tunisia |
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| Abstract: | The excitation and emission spectra of MgBr26H2O doped by Pb2+ and doubledoped by Pb2+ and Mn2+ are investigated. The 410 nm emission due to Pb2+ transitions was observed in both cases. In the emission spectrum of MgBr2:Pb, Mn the 670, 630 and 540 nm bands can be observed as well; their appearance and intensity depend on the values and the ratio of concentrations of the Pb2+ and Mn2+ impurities. These bands correspond to the emission of Mn2+ which, in the low symmetry MgBr26H2O base doped with Pb2+, can be located at various structural positions. The obtained results suggest that energy transfer in the MgBr2:Pb, Mn occurs both from Pb2+ to Mn2+ and vice versa. |
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