Forming a Nanocomposite Medium-Based Cascade Solar Cell Structure

Abstract

We propose creating a solar cell on the basis of a nanocomposite medium consisting of am electrochemically fabricated porous silicon matrix with copper embedded into its pores and oxidized to Cu₂O and a conductive transparent ITO film deposited by an extraction-pyrolytic method. The obtained structure with two electron–hole junctions represents, according the ratio between semiconductor band gaps, a cascade version of the solar cell with a nonconcentrated sunlight photoconversion efficiency of 7.12%.