New Photoluminescence Phenomena of Ge/SiO_2 Glass Synthesized by Sol-gel Method  

作　　者：YuYingFENG XiaoTianGU JiaHongZHOU JianChunBAO GangLI TianHongLU 

机构地区：[1]AnalysisandTestingCenter,LabofMaterialsScience,NanjingNormalUniversity,Nanjing210097 [2]DepartmentofChemistryandEnvironmentalScience,NanjingNormalUniversity,Nanjing210097

出　　处：《Chinese Chemical Letters》2004年第12期1505-1508,共4页中国化学快报（英文版）

摘　　要：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).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).

关 键 词：Ge/ SiO_2 glasses Ge nanocrystals PHOTOLUMINESCENCE sol-gel method. 

分 类 号：O482.3[理学—固体物理]