Multijunction solar cells incorporating group IV SiGeSn alloys

In order to get higher efficiencies in multijunction solar cells, a 1eV material lattice matched to germanium has been searched tenaciously for years. In this context, a hybrid III-V/IV multijunction and single junction solar cells incorporating 1eV SiGeSn alloy are presented. A basic characterization of these solar cells, which has been grown by CVD and subsequent MOCVD, has been carried out.