Due to the importance of blue-green luminescence of silicon basis in color display and integrated apparatus

people begin to pay attention to this scientific research.The emission wavelength of coumarin dyes lay over 420～580 nm

transmit eyeable blue-green fluorescence.Because this kind of dyes belongs to laser dyes

it has good performance of luminescence

such as:high luminescence efficiency

fast response rapidity

short duration etc

these performance are in favor of information transmission and collection.Using the speciality of porous silicon:the structure of particular nanoporous

the mortal surface area

the strong capacity of absorption

the sensitive characteristic of surface luminescence

coumarin 102(C102) was impregnated into porous silicon.In this way

the composite system of porous silicon embedded C102 was obtained. Porous silicon was obtained by electrochemistry

anodization was conducted at a constant current using a DC stabilized power and flow supply

the specimens were prepared and measured in the ambient air.It was found that the fluorescence spectra of C102 embedded in PS was similar to the fluorescence spectra of C102 in ethanol

and the symmetry of spectra was improved.It was also found that energy transfer occurred between impregnated dye and porous silicon

the photoluminescence of the embedded film had better stability and reserved excellent optic characteristic of laser dyes.The experimental results suggested that the porous silicon embedded C102 might be a better approach of realizing the blue-green photoluminescence on silicon basis.