Experimental Evaluation of the Light Trapping Potential of Optical Nanostructures for Thin-Film Silicon Solar Cells
We describe a method based on nanoimprinting and non-absorbing insulating silicon nitride electrodes for evaluating the light trapping potential of photonic nanostructures for thin-film silicon solar cells. We validate our method by relating the optical reflectance of the full solar cell stack to the external quantum efficiency of functional cells. Our method provides a useful experimental tool to compare different nanostructures circumventing complications arising from parasitic absorption and electrical cell performance.
Keywords: Light trapping ; light scattering ; thin-film silicon solar cells ; amorphous solar cells ; micromorph solar cells ; transparent ; transparent conducting oxides ; zinc oxide ; indium oxide ; free carrier absorption ; nanoimprinting
IMT-NE Number: 638
Record created on 2012-04-27, modified on 2016-08-09