Active rare earth tandem solar cell

摘要

The use of rare-earth (RE and O, N, P) based materials to transition between two different semiconductor materials and enable up and/or down conversion of incident radiation is disclosed. Rare earth based oxides, nitrides and phosphides provide a wide range of lattice spacing enabling, compressive, tensile or stress-free lattice matching with Group IV, III-V, and Group II-VI compounds.