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This letter reports on a novel enhancement-mode (E-mode) AlGaN/GaN high electron mobility transistor (HEMT) that combines nanowire channel and fluorine plasma treatment using inductively coupled plasma (ICP). Compared with the conventional HEMTs, the threshold voltage of E-mode HEMT shifts from −2.8 to +0.7 V, and the Schottky reverse leakage current is reduced by one order of magnitude. The device...
The influence of thermal annealing on four kinds of AlGaN/GaN high electron mobility transistors (HEMTs) with different fluorine plasma treatment power were compared and analyzed in detail. A thin fluorinated layer between the Schottky metal and the AlGaN barrier layer which produced with fluorine plasma treatment was conformed by the comparison of Schottky reverse gate leakage current before annealing...
A hybrid molecular dynamics (MD)/kinetic Monte Carlo (KMC) model is developed for atomistic modeling of fluorine ion implantation and diffusion in AlGaN/GaN heterostructures. The MD simulation reveals the F distribution profiles and the corresponding defect profiles, and most importantly, the potential energies of fluorine ions in the III-nitride material system. Using the results from the MD simulation,...
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