Recently, resonant-tunneling-diode (RTD) based circuits employing monolithically-integrated RTD on high electron mobility (HEMT) structures have been developed in a number of III-V systems in order to improve operational speed. The main goal of this program is to develop wide temperature-operable radiation hard monolithically-integrated electronics based on wide bandgap III-nitride epitaxial structures. In the Phase I program, we propose to develop same-wafer discrete devices (capacitors, HEMTs, and RTDs) by employing a novel multi-layer AlN/GaN heterostructure design, and to demonstrate the radiation hardness of these devices
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