Ultra-Wide Bandgap Gallium Oxide Films: UV-Luminescence and Phonon Dynamics at Extreme Temperatures

Isiaka Lukman, Matthew D. McCluskey, Leah Bergman

$\beta$-Ga${}_2$O${}_3$ is a semiconductor with bandgap in the deep-UV ~ 5 eV. Due to its strong phonon-hole coupling, holes are self-trapped inhibiting bandgap luminescence at the deep-UV…