Based on the diffusion actuion of gallium in silicon and SiO2 ,a diffusion model of gallium doping in bare silicon system and SiO2/Si system is first presentd in this paper ,the gallium doping effect in the two system...Based on the diffusion actuion of gallium in silicon and SiO2 ,a diffusion model of gallium doping in bare silicon system and SiO2/Si system is first presentd in this paper ,the gallium doping effect in the two systems is analyzed theoretically .Experiments and applications have proved that the use of the open-tube gallium deffusion in SiO2/Si system can substantially improve diffusion quality and device characteristics .展开更多
A novel oxygen sensor based in tris（2,2′-bipyridine） ruthenium（Ⅱ）,[Ru（bpy）3]Cl2 adsorbed onto silica particles codoped with metal-ions as support system was reported first in this paper.The oxygen-sensing prop...A novel oxygen sensor based in tris（2,2′-bipyridine） ruthenium（Ⅱ）,[Ru（bpy）3]Cl2 adsorbed onto silica particles codoped with metal-ions as support system was reported first in this paper.The oxygen-sensing properties were studied.Compared with reference(IN2/IO2-IRef),the relative fluorescence intensity was enhanced after codoped with La3+(10-3M) and decreased after codoped with Ag+(5.0×10-4M).The experiments of codoping with different concentration of Ag+ and La3+ showed that the relative fluorescence intensity was all decreased after different concentration of Ag+ were codoped with,but the result was contrary for La3+.We suggest that the former has formed dark-brown Ag2O which can adsorb a part of excited light,given rise to the decrease of fluorescence intensity.The increase of the latter probably because the energy transfer of La increased the fluorescence intensity.展开更多
文摘Based on the diffusion actuion of gallium in silicon and SiO2 ,a diffusion model of gallium doping in bare silicon system and SiO2/Si system is first presentd in this paper ,the gallium doping effect in the two systems is analyzed theoretically .Experiments and applications have proved that the use of the open-tube gallium deffusion in SiO2/Si system can substantially improve diffusion quality and device characteristics .
文摘A novel oxygen sensor based in tris（2,2′-bipyridine） ruthenium（Ⅱ）,[Ru（bpy）3]Cl2 adsorbed onto silica particles codoped with metal-ions as support system was reported first in this paper.The oxygen-sensing properties were studied.Compared with reference(IN2/IO2-IRef),the relative fluorescence intensity was enhanced after codoped with La3+(10-3M) and decreased after codoped with Ag+(5.0×10-4M).The experiments of codoping with different concentration of Ag+ and La3+ showed that the relative fluorescence intensity was all decreased after different concentration of Ag+ were codoped with,but the result was contrary for La3+.We suggest that the former has formed dark-brown Ag2O which can adsorb a part of excited light,given rise to the decrease of fluorescence intensity.The increase of the latter probably because the energy transfer of La increased the fluorescence intensity.
