AlGaN/GaN HFETs fabricated from maskless selectively grown mesas on Si(111) substrates

被引:3
|
作者
Bardwell, J. A. [1 ]
Haffouz, S. [1 ]
Kochtane, A. [1 ]
Lester, T. [1 ]
Storey, C. [1 ]
Tang, H. [1 ]
机构
[1] Natl Res Council Canada, Inst Microstruct Sci, Ottawa, ON K1A 0R6, Canada
关键词
D O I
10.1049/el:20072039
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
AlGaN/GaN heterostructure field effect transistors (HFETS) fabricated from maskless selectively grown mesas by ammonia molecular beam epitaxy on Si(I 11) substrates arc demonstrated, With 0.8 Pan gate length, the devices exhibited maximum drain current and trans-conductance ot 425 mA/mm and 140 mS/mm, respectively. Values of f(T) and f(MAX) of 8 and 19 GHz, respectively, were obtained from RF measurements. A 50 nm-thick SiNx passivation layer was found to be very effective in mitigating the current collapse.
引用
收藏
页码:1230 / 1231
页数:2
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