PP3.2a Plasmonic and nanophotonic light trapping
ANU and UNSW are world leaders in applying plasmonic, and more generally nanophotonic, light trapping to solar cells. Plasmonic and nanophotonic light trapping make use of wavelength scale optical effects to scatter light and increase the local light intensity, and hence increase absorption. Cell performance can be increased in this way for almost all the cell approaches described here, and we will investigate the potential performance enhancement that could be achieved in each case. Many nanophotonic structures, such as combined plasmonic and dielectric scatterers recently developed in a collaboration between ANU and UNSW, can be applied to any type of solar cell, regardless of the semiconductor material. It has been also recently shown theoretically that light trapping can be improved beyond what were previously regarded as theoretical limits by structures that have a high local density of optical states.
In this Program Package (PP3), we aim to:
• Measure photoluminescence spectroscopy (PLS) for a range of light-trapping structures fabricated on silicon wafers.
• Measure optical properties of perovskite films and develop an optical model for their behaviour.
• Apply nano-imprinted structures to silicon