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Romanov A.N.,RAS Semenov Institute of Chemical Physics | Veber A.A.,Friedrich - Alexander - University, Erlangen - Nuremberg | Vtyurina D.N.,RAS Semenov Institute of Chemical Physics | Kouznetsov M.S.,State Scientific Research and Design Institute of Rare Metal Industry Giredmet JSC | And 7 more authors.
Journal of Luminescence | Year: 2015

Abstract Single crystals of ternary bromide phase CsCdBr3 doped with univalent bismuth cations are prepared for the first time by the Bridgman method. Bi+ impurity center emits a broadband long-lived near-infrared photoluminescence with a maximum at ∼1053 nm. The characteristics of this photoluminescence and its relations with the energy spectrum of Bi+ impurity center are discussed. A comparison of Bi+ photoluminescence in CsCdBr3 and ternary chlorides (studied previously) is performed. © 2015 Elsevier B.V. Source


Plotnichenko V.G.,Fiber Optics Research Center | Philippovskiy D.V.,Fiber Optics Research Center | Sokolov V.O.,Fiber Optics Research Center | Golovanov V.F.,State Scientific Research and Design Institute of Rare Metal Industry Giredmet JSC | And 3 more authors.
Optics Letters | Year: 2013

Experimental and computer-modeling studies of the spectral properties of crystalline AgCl doped with metal bismuth or bismuth chloride are performed. The broad near-IR luminescence band in the 0.8-1.2 μm range with time dependence described by two exponential components corresponding to the lifetimes of 1.5 and 10.3 μs is excited mainly by 0.39-0.44 μm radiation. Computer modeling of probable Bi-related centers in the AgCl lattice is performed. On the basis of experimental and calculation data, a conclusion is drawn that IR luminescence can be caused by Bi+ ion centers substituted for Ag+ ions. © 2013 Optical Society of America. Source


Romanov A.N.,Moscow State University | Veber A.A.,RAS A.M. Prokhorov General Physics Institute | Fattakhova Z.T.,RAS Semenov Institute of Chemical Physics | Vtyurina D.N.,RAS Semenov Institute of Chemical Physics | And 6 more authors.
Journal of Luminescence | Year: 2014

Bi+-doped single crystals of triple chloride CsCdCl3 were prepared by the Bridgman method. Bismuth monocation is responsible for characteristic two-peaked absorption feature in visible and long lived NIR luminescence in this crystal. The splitting of the Bi+ lowest electronic states by crystal field is considered. The absorption spectrum is assigned to optical transitions of A→E type in two nonequivalent Bi + positions of D3h and C3v symmetry. The possibility of Jahn-Teller effect in Bi+ excited states of E type is discussed in relation with absorption and luminescence excitation spectra properties. © 2014 Elsevier B.V. Source

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