Hexagonal Ge1-xSnx alloys maintain a direct bandgap at Gamma with strong bowing and robust polarization anisotropy in the dilute Sn regime.
Based on this model, our calculations yield a crystal-field 4 A M L1.0 0.5 0.0 0.5 1.0 1.5 Energy (eV) 2H-Ge Ge0.9375Sn0.0625 0.0 0.2 0.4 0.6 0.8 1.0 Spectral Weight Figure 3
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Structural, electronic, and optical properties of hexagonal GeSn from density functional theory
Hexagonal Ge1-xSnx alloys maintain a direct bandgap at Gamma with strong bowing and robust polarization anisotropy in the dilute Sn regime.