Current Research

Prof. Hall's compound semiconductor materials and device research is focused on understanding and developing new applications of native oxides for optoelectronic, electronic, and integrated optics devices. Presently, GaAs-based optoelectronic devices, optical waveguides and electronic devices are being designed, fabricated and characterized. New approaches are being explored for realizing low-loss heterostructure waveguides and photonic integrated circuits for wavelength division multiplexing (WDM) applications in optical communications. Research on the atomic-scale morphology, interface charge-trapping characteristics, and scalability of InAlP native oxides is underway in pursuit of a viable metal-oxide-(compound) semiconductor (MOS) electronic gate oxide, akin to silicon dioxide on silicon. Hall's research also includes fundamental studies of compound semiconductor native oxide properties and related processing and integration issues.

Group Leader