| Popis: |
This work is focused on the possibility of sunlight concentration on silicon dies or silicon stripes. The main aim of this work is the design and realization of the concentration element, or system, which is based on diffractive optics and optimized to achieve possibly high optical efficiency. The theoretical part deals with problems of photovoltaic systems and sunlight concentration. The practical part deals with design of optical microstructures and their realization by e-beam lithography using the electron-beam writer BS600. Microstructures created in the electron resist on silicon substrates or embossed into transparent materials are measured in the laboratory. We evaluated and compared their optical properties, which gives some feedback for further optimizations. Transparent elements are tested with real silicon dies and so overall properties of a prototyped photovoltaic module can be evaluated. |
