Mid-infrared (3-8 μm) ${\text{Ge}}_{1-y}{\text{Sn}}_y$ alloys (0.15 < $y$ < 0.30): synthesis, structural, and optical properties

Chi Xu, Patrick M. Wallace, Dhruve A. Ringwala +4

${\text{Ge}}_{1-y}{\text{Sn}}_y$ alloys with compositions in the 0.15 < $y$ < 0.30 range have been grown directly on Si substrates using a chemical vapor deposition approach that allow…