Growth and optical properties of synthetic opal filled with Bi12SiO20 and Bi12GeO20 nanocrystals

Investigation of defect levels in Bi12SiO20 single crystals by thermally stimulated current measurements

“…Bi 12 MO 20 (M: Si, Ge, Ti) ternary compounds are known as sillenites and have been investigated for long times due to their photorefractive, photoconductive, piezoelectric characteristics [1][2][3][4][5][6]. The fascinating properties of the sillenite group members make them preferable materials in various electronic applications like hologram recording, photocatalysts, optical data processing and interferometry [7][8][9][10][11]. Bi 12 SiO 20 (abbreviated as BSO) belongs to sillenite family and its high electrical resistivity, wide band gap energy and high photocatalytic activity characteristics take remarkable attention in related technological applications [12][13][14].…”

Shape-controlled synthesis and facet-dependent performance of single-crystal Bi25GaO39photocatalysts

“…10 Many sillenite-type materials such as Bi 12 TiO 20 , Bi 12 GeO 20 and Bi 12 SiO 20 have attracted much attention due to their photoconductive, electro optic and piezoelectric properties. [11][12][13] Up to now, a series of sillenite-type materials such as Bi 24 Ga 2 O 39 , Bi 12 GeO 20 , Bi 12 TiO 20 , Bi 25 FeO 40 , Bi 24 Al 2 O 39 and Bi 12 SiO 20 have been reported as efficient photocatalysts due to their special structures. [14][15][16][17][18][19] As a typical example of a sillenite-type photocatalyst, Bi 25 GaO 39 has been synthesized by a solid state reaction.…”

Structure, Optical and Electric Properties of Opal-Bismuth Silicate Nanocomposites

“…The Raman spectrum of the opal bismuth silicate composite was previously investigated in the earlier paper [5], and an appearance of new Raman bands was explained by nanosized e ects and local surface modes. The present Raman measurements prove formation of the bismuth orthosilicate crystalline phase in the as-prepared composite (Fig.…”

“…All of this allows us to expect a wide application of the nanocomposite in applied and photorefractive optics. The previous characterization of opals impregnated with the bismuth silicate melt was performed by the review Raman spectra measurements in earlier paper [5].…”

“…An average sphere diameter derived from the growth surface images obtained by X-ray microanalyzer JEOL JXA 8200 (Institute of Physics of NAS of Ukraine) and the Bragg light re ection spectra, as described in the paper [5], was 306 ±15 nm. Average linear sizes of channels, tetrahedral and octahedral pores, calculated accordingly to the relations in the paper [7], were 46, 70, and 120 nm, respectively.…”