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SiGeSn ternary alloys offer a means to fabricate a 1.0-eV subcell junction for inclusion in a multijunction solar cell. The main advantage of the SiGeSn alloy is a tuneable bandgap energy and variable lattice parameter, enabling the material to be integrated into the existing lattice-matched multijunction architectures. Recent growth, structural, optical, and device results from SiGeSn material, with...
GaAsSbN is an alloy that can achieve 1 eV bandgap lattice-matched to GaAs. The alloy may be an interesting alternative to the more common GaInNAs(Sb) used in high efficiency multi-junction solar cells, as GaAsSbN shows enhanced nitrogen incorporation. We present photoluminescence (PL) and time-resolved photoluminescence (TRPL) measurements taken using a streak camera for a range of double-heterostructure...
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