Monday, August 5, 2013

1308.0550 (V. G. Plotnichenko et al.)

Near-IR luminescence in bismuth-doped AgCl crystals    [PDF]

V. G. Plotnichenko, D. V. Philippovskiy, V. O. Sokolov, V. F. Golovanov, G. V. Polyakova, I. S. Lisitsky, E. M. Dianov
Experimental and computer-modeling studies of spectral properties of crystalline AgCl doped with metal bismuth or bismuth chloride are performed. Broad near-IR luminescence band in the 0.8--1.2mkm range with time dependence described by two exponential components corresponding to the lifetimes of 1.5 and 10.3mks is excited mainly by 0.39--0.44mkm radiation. Computer modeling of probable Bi-related centers in AgCl lattice is performed. On the basis of experimental and calculation data a conclusion is drawn that the IR luminescence can be caused by Bi^+ ion centers substituted for Ag^+ ions.
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