0.2 μm AlGaAs/InGaAs pseudomorphic HEMT fabricated by optical lithography

Chu Dong Chen, Shiow Jen Chen, Yuan Tzay Chen, Tien Min Chuang, Ming Fon Huang, Feng Yuh Juang, Chung Chi Chang, Yi Jen Chan, Jen Inn Chyi

Research output: Contribution to conferencePaperpeer-review

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 languageEnglish
DOIs
StatePublished - 1994
Event1994 International Electron Devices and Materials Symposium, EDMS 1994 - Hsinchu, Taiwan
Duration: 12 Jul 199415 Jul 1994

Conference

Conference1994 International Electron Devices and Materials Symposium, EDMS 1994
Country/TerritoryTaiwan
CityHsinchu
Period12/07/9415/07/94

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