Abstract:Admittance spectroscopy of pristine AlGaN/GaN metal-semiconductor interface reveals the distributed trap activation energy in the order of 0.24 eV by mercury probe capacitance-voltage (C-V) measurements. The trap densities of states (D it ) of these traps were extracted in the range of ~1.9x10 12 eV -1 cm -2 with the reverse bias voltage ranging from -5 Volts to 0 Volt. A very good fitting of admittance spectra (G/ω) was obtained by using the time constants of these traps. The dispersion in the capacitance was… Show more
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