Steiner, MarcMarcSteinerBösch, ArminArminBöschDilger, AlexanderAlexanderDilgerDimroth, FrankFrankDimrothDörsam, TobiasTobiasDörsamMuller, M.M.MullerHornung, ThorstenThorstenHornungSiefer, GeraldGeraldSieferWiesenfarth, MaikeMaikeWiesenfarthBett, Andreas W.Andreas W.Bett2022-03-042022-03-042015https://publica.fraunhofer.de/handle/publica/23912710.1002/pip.2568In this paper we present the application of high efficiency four-junction solar cells using SOITEC bonding technology under a Fresnel lens optic and in a FLATCON®-type CPV module. We demonstrate very high performance. The measurement of a sub-module, consisting of a four-junction solar cell adjusted under a single Fresnel lens, showed an efficiency of 38.9%. An 829.6 cm2 sized FLATCON®-type CPV module yielded in an efficiency of 35.0% and 36.7% at CSOC and CSTC, respectively. Thus, both, the sub-module and the CPV module showed record values, which prove the usefulness of high efficiency four-junction solar cells in CPV applications.enMaterialien - Solarzellen und TechnologieIII-V und Konzentrator-PhotovoltaikIII-V Epitaxie und SolarzellenCPV-moduleratingconcentrator cellcharacterizationefficiency621journal article