Abstract
Al0.2Ga0.8As/In0.25Ga0.75As pseudomorphic high electron mobility transistors (PHEMTs) with a 0.2-μm gate length have been fabricated. Based on a shadow deposition technique, the sub-half-micron gate length technology using optical lithography has been developed. This process exhibits large cross-sectional area of the gate to reduce the gate resistance of devices. The gate resistance of 46 Ω/mm of gate width was obtained for a 5000 A thick Ti/Au gate. In addition, a PHEMT fabricated with this technique yielded cut-off frequency of fT = 36 GHz and maximum osculation frequency of fmax=93 GHz.
Original language | English |
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DOIs | |
State | Published - 1994 |
Event | 1994 International Electron Devices and Materials Symposium, EDMS 1994 - Hsinchu, Taiwan Duration: 12 Jul 1994 → 15 Jul 1994 |
Conference
Conference | 1994 International Electron Devices and Materials Symposium, EDMS 1994 |
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Country/Territory | Taiwan |
City | Hsinchu |
Period | 12/07/94 → 15/07/94 |