Proton-induced damage in gallium nitride-based Schottky diodes

被引:31
作者
Karmarkar, AP
White, BD
Buttari, D
Fleetwood, DM
Schrimpf, RD
Weller, RA
Brillson, LJ
Mishra, UK
机构
[1] Vanderbilt Univ, Interdisciplinary Program Mat Sci, Nashville, TN 37235 USA
[2] Ohio State Univ, Dept Elect & Comp Engn, Columbus, OH 43210 USA
[3] Univ Calif Santa Barbara, Dept Elect & Comp Engn, Santa Barbara, CA 93106 USA
[4] Vanderbilt Univ, Dept Elect Engn & Comp Sci, Nashville, TN 37235 USA
关键词
gallium (Ga) alloys; Schottky diodes; proton radiation effects;
D O I
10.1109/TNS.2005.860668
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Proton irradiation decreases the doping concentration and increases the ideality factor and series resistance, but has very little effect on the Schottky barrier height in n-Gallium nitride Schottky diodes. 1.0-MeV protons cause greater degradation than 1.8-MeV protons because of their higher nonionizing energy loss. The displacement damage recovers during annealing. Comparison between Schottky diodes and high electron-mobility transistors suggests that the degradation in both types of devices is predominantly due to carrier removal and mobility degradation caused by radiation-induced defect centers in the crystal lattice, with interface disorder playing a relatively insignificant part in overall device degradation.
引用
收藏
页码:2239 / 2244
页数:6
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