The team reported that CVD-deposited graphene on planar and textured silicon has significantly lower reflectance, especially over the UV range in comparison with a Si3N4 layer – textured silicon stack commonly used in today’s solar-cell technology.

FDTD calculations confirm light trapping and lower reflectance values for the graphene-SiO2-silicon structure. Graphene layers with an ideal two-dimensional structure and a highly transparent (98%) nature are ideally suited for AR applications in solar cell and UV detector applications.

The researchers presented their results in the journal Nanotechnology.