Bright and stable photoluminescence from porous silicon samples immersed in AlCl3+C2H5OH+H2O solution under a certain bias voltage was obtained. FTIR spectra show that the enhancement and stabilization of the photoluminescence from the treated porous silicon are due to the formation of SiOx and Al2O3 films on the sample surfaces. The passivation films obtained by treating the porous silicon have g...