Carbon treatment as a method of the surface development of porous glasses

A method to develop the structure of the internal pore surface is proposed. The surface of porous silicate glasses is modified by impregnating carbon into the pores and subsequent anneal. The procedure is repeated several tim es. A technique to control the properties of the pore surface is proposed a s well. Analysing the change in the features of photoluminescence spectrum as a result of such treatment in comparison with the pore-size distribution spectra allows us to assume formation of silicon nanoclusters in porous gl ass and to estimate their sizes. The nonmonotonic change of the surface dev elopment with simultaneous stationary increase of photoluminescence intensi ty is explained by composite pattern of the silicon clusters change during multiple carbon treatments.