Using the speciality of porous silicon

organic dye was impregnated into porous silicon in order to improve the luminescence of porous silicon and realize high luminescence efficiency on silicon basis.This problem had been researched

but the problem of energy transfer between porous silicon and organic dye was still under discussed.In this article

porous silicon was annealed diversely in vacuum and in atmosphere

then

C102 dyes were embedded into both PS samples.In this way

two different kinds of composite system of porous silicon embedded by C102 were obtained.By comparing the optical characteristic of these two kinds of composite system

it was found that the luminescence intensity of C102 embedded in PS was enhanced when porous silicon was annealed in atmosphere.By contrasting the FT-IR spectra of the two kinds of annealed porous silicon

it was found that the Si—H bonding was reduced and hanging-bonding was appeared in surface-state of porous silicon when porous silicon were annealed in vacuum.On the other hand

it was found that the surface-state of porous silicon was oxidized when porous silicon was annealed in atmosphere.The experimental results showed that the oxidized porous silicon could improve the luminescence efficiency of embedded films and improve the transparence of PS underlay.In terms of energy transfer between porous silicon and organic dyes

the oxidation of porous silicon’s surface-state could decrease nonradiation channels and hinder the energy transfer.Therefore

the optics characteristic of organic dyes embedded in porous silicon can be absolutely exposed.In this paper

it was realized luminescence of solid-state C102 and found that luminescence efficiency of these embedded films could be improved by changing surface-state of porous silicon.The results suggested that the porous silicon embedded C102 should be a better approach for realizing the blue-green photoluminescence on silicon basis.