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- W2802711917 abstract "Gallium Nitride (GaN) substrates gained much interest because of their usefulness in making devices for microwave high power electronics, as well as electronic devices of high operating voltage (above 1000V). Among many techniques of GaN crystallization, ammonothermal method is regarded as a key technology of bulk GaN production. In this method, GaN is deposited on native seeds in supercritical ammonia solution at high pressure (4 kbar) and temperature (600 °C) conditions. Intentional doping allows to obtain crystals of wide spectrum of electric properties (n-type, p-type, highly resistive). In case of the latter ones, compensation of unintentional oxygen donors by shallow and deep acceptors is used. It enables to fabricate 2-inch highly resistive semi-insulating substrates of thermally stable resistivity of at least 1011 Ω cm at room temperature. Those substrates are characterized by outstanding structural quality (flat crystal lattice, dislocation density of 5x104 cm-2). Semi-insulating substrates were successfully used in fabrication of high electron mobility transistors (HEMT), operating at 22 GHz.." @default.
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- W2802711917 date "2018-04-19" @default.
- W2802711917 modified "2023-10-14" @default.
- W2802711917 title "Ammonothermal GaN substrates for microwave electronics and energoelectronics" @default.
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- W2802711917 doi "https://doi.org/10.1117/12.2318038" @default.
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