Bi4Ge3O12:Nd3+ and Bi12SiO20:Nd3+

Crystal growth and spectroscopic properties of MoO3 and WO3 doped Bi4Ge3O12 by optical floating zone method

“…The bismuth germanate-Bi 4 Ge 3 O 12 (BGO) single crystal is a well-known material widely used as a scintillator, and the scintillation properties of BGO have been the focus of many studies [1][2][3][4]. BGO crystal is non-hygroscopic, and has large X (or ␥)-ray absorption coefficient, high effective atomic number and density (higher resistivity to radiation damages) [5][6][7][8], low afterglow, mechanical stability and an emission spectrum matching well that of semiconductor photodetectors.…”

Spectroscopic characterization of Er3+transitions in Bi4Si3O12

“…Several valleys superimposed on the BSO emission band are quite noticeable, which proves a one-to-one correspondence between the wavelength position of these dips on the absorption peaks associated with the 4 F 7/2 , 2 H 11/2 and 4 S 3/2 manifolds. Therefore, it can be inferred that there is a light re-absorption process in the BSO:Er crystal, which can be interpreted, from a microscopic point of view, as a radiative process of energy transfer [12] between resonant energy levels of the host crystal and the Er 3+ ion.…”

VUV/UV/X-Ray Excited Luminescent Properties of Eu 3+ and Pr 3+ Doped BiSbO 4

“…[1−3] A great number of agricolite-type compounds were synthesized over the last three decades. [2,3] Particularly, Bi 4 Ge 3 O 12 (BGO) is used as a good x-ray, γray and high energy particle detector; [4] and Bi 12 SiO 20 (BSO) is found to have applications in optoelectronics as an efficient photorefractive material, [5] and bismuth tellurite Bi 2 TeO 5 (BTO) single crystal is regarded as potential laser and self-frequency doubling generation (SFDG) material. [6] All these materials have similar structures characterized by independent XO 4 (X = Ge, Si, Te) tetrahedral (slightly distorted) which delimits rather distorted octahedral coordination spheres around Bi 3+ cations.…”