ABSTRACT
Fortunately, nanomaterials offer wide easiness in tailoring of morphologies for optimized photon management design, in terms of their large variety of structures shapes, and feature sizes in the wavelength and sub-wavelength regime that are controllable in a wide range and achievable in a large scale. Nanomaterials and their corresponding structures, enable the control to photons via transmission, reflection, scattering at the boundaries of nanomaterials. There are a large number of interesting works that demonstrate the effectiveness of using nanomaterials and nanostructures to trap light, including refs. With properly chosen materials and structural parameters, photonic crystals could act to enhance light trapping by controlled constructive/destructive interface through light reflection, refraction and diffraction in dielectric interfaces inside photonic crystals. For applications of light trapping in nano solar cells, the designed structures ought to allow for strong coupling and a large fraction of the coupled modes should be distributed in the semiconductor.
