EXAFS comparison of crystalline/continuous and amorphous/porous GaSb

Ion irradiation of GaSb yields not only amorphization but also causes the material to become porous. For this report, GaSb has been irradiated to a dose sufficient to yield a porous network comprised of 15 nm wide rods. The local structure has been determined by EXAFS and compared with that of a polycrystalline standard. Significant Ga2O3 formation is observed along with Sb-Sb bonding far in excess of the homopolar bonding observed in other amorphous III-V semiconductors.