Посилання:Effect of microwave treatment on current flow mechanism in
ohmic contacts to GaN / V.N. Sheremet // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2013. — Т. 16, № 3. — С. 280-284. — Бібліогр.: 14 назв. — англ.
Підтримка:The author is indebted to research workers of the
V. Lashkaryov Institute of Semiconductor Physics of the
National Academy of Sciences of Ukraine – Prof.
R.V. Konakova, Prof. A.V. Sachenko, Prof.
L.A. Matveeva, Dr. V.G. Lyapin for fruitful
consultations and interest in this work and researcher
E.Yu. Kolyadina for measurement of radii of curvatures
of the samples.
The temperature dependence of contact resistivity ρс of Ti-Al-TiB₂-Au ohmic
contacts to n-GaN and effect of microwave treatment on ρс are investigated. The obtained
dependences are described using a model of current flow via metal shunts associated
with dislocations, the current being limited by diffusion supply of electrons. It is shown
that microwave treatment increases the dislocation density in the near-contact region of
contact structure and reduces the relative spread of resistivity values of contacts formed
on the wafer.