Spectroscopic and SEM investigations of porous silicon doped with dyes

Abstract

Results of photoluminescence (PL) and scanning electron microscopy (SEM) studies of porous silicon (PS) layers doped with stilbene 1 (St1) and kiton red 620 (Kt) dyes before and after aging are reported. The PS layers impregnated with St1 and Kt emit in different spectral regions. An extent of the layer oxidation before the dye impregnation has been shown to give a possibility of tuning the PS emission range. The revealed effects might be applied in optoelectronic technology.