GeSn – Germanium tin – Group IV

Crystal Structure

a1	4.42 Å
a2	4.42 Å
Buckling Δ	0.75 Å
d1	2.66 Å

Bandstructure

	PBE	HSE
Valence Band Maximum	-4.35 eV	-4.53 eV
Conduction Band Minimum	-4.27 eV	-4.07 eV
Band Gap	0.08 eV	0.46 eV