GW+BSE calculations on Si2Te3 find strong optical anisotropy from Si-Si dimer orientation plus large excitonic effects that shrink the gap by 0.3-0.6 eV.
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Anisotropic Optical Properties of 2D Silicon Telluride From Ab Initio Calculations
GW+BSE calculations on Si2Te3 find strong optical anisotropy from Si-Si dimer orientation plus large excitonic effects that shrink the gap by 0.3-0.6 eV.