  Passivated, hole-selective contacts play important role in reducing surface
recombination by lowering the concentration of electrons in the rear side of a
solar cell. However, parasitic optical losses in these contacts can still limit
the performance of the cell. In this work, the long wavelength optical losses
of silicon solar cells featuring hole-selective molybdenum oxide (MoOx) rear
contacts are investigated using optical simulations. The potential of these
selective contacts for possible enhancement of photogenerated current density
was also investigated for their use with nanostructured dielectric layers.
