The group-IV semiconductor alloy Ge(1−x−y) Si(x) Sn(y) has recently attracted great interest due to its prospective potential for use in optoelectronics, electronics, and photovoltaics. Here, we investigate molecular beam epitaxy grown Ge(1−x−y) Si(x) Sn(y) alloys lattice-matched to Ge with large Si and Sn concentrations of up to 42% and 10%, respectively.
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