Owing to severe global competition at the marketplace, major high-tech corporations
have been scaling back "blue sky" or "curiosity driven" research at
corporate R&D labs and increasing their reliance on outsourcing of product components.
At the same time, research universities have been adding a materials design science and
engineering component to the preparation of future scientists and engineers and becoming
involved in technology realization, especially for niche market products. Increasingly,
breakthroughs and innovations in materials and devices are coming from the laboratories of
My research and teaching converge when I am working with engineering graduate students
on "real" solid-state engineering leading to possible new niche market products
using III-V compound semiconductor materials in electronic and photonic devices, chips,
and small systems. My primary materials design tool is molecular beam epitaxy (MBE). I
start with function (e.g., high speed optical emitters) and work backwards to determine
the best and cheapest way to achieve this function (e.g., high speeds GaAs LEDs for short
haul optical links). Students who work with me have a committed interest in a materials
science and engineering approach to new or improved semiconductor device development.
Projects currently under investigation in Prof.
- Selected Publications
Resonant-Cavity Enhanced Light-Emitting Diodes by the Use of a Tunnel Diode
Contact," R. Zhu, M.C. Hargis, J.M.Woodall, and M.R. Melloch, Phot.
Tech. Lett., 13(2), 103-105 (2001).
"Ohmic nanocontacts to GaAs using undoped and p-doped Layers of
Low-temperature-grown GaAs," T. Lee, N.P. Chen, J. Liu, R.P. Andres, D.B.
Janes, E-H. Chen, M.R. Melloch, J.M. Woodall, and R. Reifenberger, Appl.
Phys. Lett., 76(2), 212-14 (2000).
Bandwidth GaAs LEDs," C. Chen, M. Hargis, J. Woodall, M. Melloch, J.
Reynolds, E. Yablonovitch, and W. Wang, Appl. Phys. Lett., 74,
for Misfit Dislocation-related Carrier Accumulation at the InAs/GaP
Heterointerface," V. Gopal, E.P. Kvam, T.P. Chin, and J.M. Woodall, Appl. Phys.