Ge-content dependent efficiency of Si1−xGex nanorod solar cell with pyramid structure

In this paper efficiency of Si
_1-x
Ge
_x
based radial p-n junction nanorod array solar cell with pyramidal structure is determined theoretically and its variation is for different Ge-content. A nonlinear variation of overall efficiency of SiGe solar cell with Ge-content (x) is obtained. Efficiency increases with increase in x.