Surface Functionality Features of Porous Silicon Prepared and Treated in Different Conditions

Figure 4

IR spectra of por-Si layers prepared straight before the characterization in the following conditions: the blue color: single-stage syntheses:  mA/cm²,  min; the red color:  mA/cm²,  min; the green color: two-stage synthesis, series III: stage 1:  mA/cm²,  min; stage 2:  mA/cm²,  min.