The germanium-doped decolorization process of zinc tungstate single crystal belongs to the field of tungstate series crystal production. This process generally uses Sb2O3 or Bi2O3 or silver as a doping decolorizer, and its common disadvantage is that it cannot produce large-sized colorless crystals.
The germanium-doped decolorization process of zinc tungstate single crystal is characterized by using GeO2 as the doping material. When the weight ratio of ZnO:WO3:GeO2 is 1:1-X:X, X is between 0.05% and 0.1%, the lifting When the speed is 1-3 mm/h, the rotation rate is 20-30 rpm, and the cooling rate after the growth is between 150-200 °C/h, a colorless large-sized ZnWO4 crystal can be obtained, and the luminescence performance is slightly better than that of ZnWO4, the energy resolution can reach about 12.9%.
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