Bismuth germanite (Bi12GeO20, BGO) crystals are highly efficient photoconductors with a low dark conductivity, that allows a build-up of large photo-induced space-charges. Tremendous photoconductivity and electro-optic properties make BGO crystals attractive in a range of applications: spatial light modulators, optical switches, phase conjugation mixers. BGO crystals are grown by modified Czochralski method and available in up to 3‘‘ diameter aperture size.
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Crystals can be supplied with ITO coatings on request.
Bi4Ge3O12 refers to a scintillation crystal made from Bismuth Oxide and Germanium Oxide. BGO is a widely used inorganic scintillator material known for its several desirable characteristics in radiation detection and medical imaging, such as high density, high effective atomic number and high stopping power for gamma rays.
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Scintillation BGO crystal has also been proven to be reliable in Oil&Gas wireline logging and the mineral wireline logging when coupled with light sensors, such as photo-multiplier tubes(PMTs), where the NaI(TI) crystal has been universally used. The lacked of spectrum resolution could be compensated by its high photon fraction for high energy gamma ray naturally occurring from Uranium and Thorium.
Besides single BGO crystals, we are also capable of fabricating it into array configurations, commonly used separators include BaSO4 and ESR, 3M, which are ideal in the nuclear medical imaging application, typically PET scanners.