NON-DOPED WHITE FLUORESCENT SYNTHETIC SILICA GLASS

摘要

PROBLEM TO BE SOLVED: To provide a non-doped white fluorescent synthetic silica glass which emits white fluorescence upon irradiation with ultraviolet radiation, without doping carbon, Cu or a phosphor.;SOLUTION: The synthetic silica glass has an OH group content of ≤1 ppm, a chlorine content of ≤30 ppm, a viscosity (logη) at 1,280°C of ≥12.2 P, a Cu content of ≤1 ppm and a C content of ≤100 ppm, and emits ≥1 s delayed fluorescence in the visible light region upon irradiation with ultraviolet radiation, wherein the fluorescence emitted upon irradiation with ultraviolet radiation is white fluorescence.;COPYRIGHT: (C)2013,JPO&INPIT