New Ge/SiO_2 glasses have been synthesized by heating the GeO_2/SiO_2 dry gels under H_2gas at 700℃. The resulting fluorescence spectra show that this kind of Ge/SiO_2 glasses emit strongphotoluminescence at 392 nm (...New Ge/SiO_2 glasses have been synthesized by heating the GeO_2/SiO_2 dry gels under H_2gas at 700℃. The resulting fluorescence spectra show that this kind of Ge/SiO_2 glasses emit strongphotoluminescence at 392 nm (3.12 eV), medium strong photoluminescence at 600 nm (2.05 eV)and weak photoluminescence at 770 nm (1.60 eV) respectively. Possible photoluminescencemechanisms are also discussed based on the results of X-ray diffraction (XRD) and X-rayphotoelectron spectra(XPS).展开更多
文摘New Ge/SiO_2 glasses have been synthesized by heating the GeO_2/SiO_2 dry gels under H_2gas at 700℃. The resulting fluorescence spectra show that this kind of Ge/SiO_2 glasses emit strongphotoluminescence at 392 nm (3.12 eV), medium strong photoluminescence at 600 nm (2.05 eV)and weak photoluminescence at 770 nm (1.60 eV) respectively. Possible photoluminescencemechanisms are also discussed based on the results of X-ray diffraction (XRD) and X-rayphotoelectron spectra(XPS).
