Developing large and efficient fluorescent concentrator systems

In this paper different concepts to increase the efficiency of fluorescent concentrator systems are investigated. First, the combination of different fluorescent concentrator materials with spectrally matched solar cells is investigated. This approach leads to very high efficiencies up to 6.9%. Second, different photonic structures are investigated that reduce the escape cone losses of the fluorescent concentrators. These include multi-layer systems and three dimensional photonic structures.