Nonradiative relaxation processes in V3+ doped halide and oxide lattices
作者： Christian Reber , Hans U. Güdel
DOI: 10.1016/0022-2313(90)90053-E
关键词: Phonon 、 Halide 、 Luminescence 、 Lattice (order) 、 Oxide 、 Inorganic compound 、 Photoluminescence 、 Molecular physics 、 Anharmonicity 、 Chemistry 、 Inorganic chemistry
摘要: Abstract The nonradiative relaxation properties of the near-infrared luminescence from V3+ in a series 10 fluoride, chloride, bromide and oxide lattices are investigated. Nonradiative multiphonon processes strongly dependent on host lattice. chemical nature lattice has bigger effect than structural differences. In Al2O3 dominate down to 2 K, whereas various chloride quenching sets above 300 K. temperature dependence rate knr for all is reasonably reproduced by single configurational coordinate model. knr(0) values thus obtained compared theoretical calculated electronic factors R. experimental deviate many orders magnitude estimates. Nonlinear coupling (for lattices) anharmonicity fluoride discussed as possible sources discrepancies. An empirical correlation with Huang-Rhys factor S number p vibrational quanta created process presented.
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