caa a22 4500 467927065 CHVBK 20180406152932.0 cr unu---uuuuu 170328e20060401xx s 000 0 eng 10.1134/S0020168506040091 doi (NATIONALLICENCE)springer-10.1134/S0020168506040091 Doping effect on the optical, electro-optic, and photoconductive properties of Bi12MO20 (M [Elektronische Daten] Ge, Si, Ti) [V. Chmyrev, V. Skorikov, E. Larina] The doping effect on the optical, electro-optic, and photoconductive properties of Czochralski-grown Bi12MO20 (M = Ge, Si, Ti) sillenite-structure single crystals was studied. The dopants were introduced into the growth charge in the form of oxides. Bi12TiO20 crystals were doped with V, Zn, Cu, P, and Nb; and Bi12SiO20 crystals were doped with Cd and Mo. The results indicate that the doping level has a significant effect on the photoconductivity of the Bi12TiO20〈Zn〉, Bi12TiO20〈Cu〉, Bi12SiO20〈Cd〉, and Bi12SiO20〈Bi24CdMoO40〉 crystals, which may exceed that of undoped crystals at low doping levels and may be substantially lower than it, down to zero, at increased dopant concentrations. Niobium doping of bismuth titanate has no effect on its photosensitivity and electro-optic properties. Phosphorus and vanadium enhance the photosensitivity of bismuth titanate over the entire composition range studied but have little effect on its electro-optic coefficient r 41. A slight increase in r 41 was only observed at high vanadium concentrations. The axial impurity distribution in the crystals is shown to be nonuniform, which reflects in their photoresponse: the photoconductivity of the copper-doped crystals near the seed end is 3 times that near the tail end. Pleiades Publishing, Inc., 2006 Chmyrev V. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, 119991, Moscow, Russia aut Skorikov V. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, 119991, Moscow, Russia aut Larina E. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, 119991, Moscow, Russia aut Inorganic Materials Nauka/Interperiodica 42/4(2006-04-01), 381-392 0020-1685 42:4<381 2006 42 10789 https://doi.org/10.1134/S0020168506040091 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S0020168506040091 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chmyrev V. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, 119991, Moscow, Russia aut NATIONALLICENCE 700 1- Skorikov V. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, 119991, Moscow, Russia aut NATIONALLICENCE 700 1- Larina E. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, 119991, Moscow, Russia aut NATIONALLICENCE 773 0- Inorganic Materials Nauka/Interperiodica 42/4(2006-04-01), 381-392 0020-1685 42:4<381 2006 42 10789 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer