Publications Details

Publications / Journal Article

Oxidation of ultrathin GaSe

Laros, James H.; McDonald, Anthony E.; Ohta, Taisuke O.; Howell, Stephen W.; Spataru, Dan C.; Kalugin, Nikolai G.

Oxidation of exfoliated gallium selenide (GaSe) is investigated through Raman, photoluminescence, Auger, and X-ray photoelectron spectroscopies. Photoluminescence and Raman intensity reductions associated with spectral features of GaSe are shown to coincide with the emergence of signatures emanating from the by-products of the oxidation reaction, namely, Ga₂Se₃ and amorphous Se. Furthermore, photoinduced oxidation is initiated over a portion of a flake highlighting the potential for laser based patterning of two-dimensional heterostructures via selective oxidation.