Computer simulation of amorphous silicon thin-film solar cell with embedded coaxial junction nanowires

This work studies a thin-film amorphous Si solar cell with a coaxial p-i-n structure in the form of a nanowire with vertically oriented p-n junctions embedded into the structure of a planar basic solar cell with traditional horizontal p-n junction. A three-dimensional model of the solar cell is built using the Silvaco TCAD software package and its basic electrical characteristics are obtained. It is shown that the considered design of solar cell allows a significant increase of the photoconversion efficiency at oblique sunlight incidence.