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Enhancement mode AlGaN/GaN high electron mobility transistor with p-InAlN gate is designed and successfully studied its electrical properties. Threshold voltage of the device is 1.9 V, which is required magnitude of threshold voltage for real device. Similarly, the maximum drain current is 520 mA/mm and trasconductance is 183 mS/mm, which is the record estimation for enhancement-mode (e-mode) device...
By means of a numerical hydrodynamic (HD) model coupled with Poisson pseudo-2D equation, we simulate the drain current response of a high electron mobility transistor (HEMT) to a THz signal applied to its gate and/or to its drain contacts in order to obtain the optimal configuration in terms of detection.
With the technical progress of radio-frequency setups, high frequency quantum transport experiments have moved from theory to the lab. So far the standard theoretical approach used to treat such problems numerically — known as Keldysh or NEGF (Non Equilibrium Green's Functions) formalism — has not been very successful mainly because of a prohibitive computational cost. We propose a reformulation of...
Electron transport properties of GaN-based heterostructures are investigated by means of a Monte Carlo model, which considers a large number of subbands in several valleys. Room-temperature low-field mobility consistent with experimental results is obtained provided that screening of phonon scattering is accounted for. In intrinsic heterostructures the mobility is always greater than in bulk GaN....
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