Microstructured polymer surfaces with complex optical functions for solar applications

In solar applications microstructured polymer surfaces can be used as optically functional devices. Examples are antireflective surfaces, daylighting, sun protection systems, concentrator photovoltaic modules and light trapping structures in organic solar cells. The examples and the principles of function of the respective microstructures are described in detail. The suitability of different manufacturing methods is discussed. Two of them, ultraprecision machining and interference lithography are described. For the latter experimental results are shown. Finally, the opportunities and the risks of the shown approaches are discussed.