Admittance spectroscopy for planar and across measure configuration of metal/porous silicon/Si structures

In this paper two Porous Silicon (PS) measure configuration (Al/PS/p-Si/Al and Al/PS/Al) are presented. Admittance as a function of frequency and dc bias voltage were in detail analyzed. Admittance spectroscopy is a power tool in the study of semiconductors. We find out conductance and susceptance of single and multilayer structures. Moreover this diagnostic technique gives information about structural properties of investigated material.