High thermal stability AlGaAs/InGaAs enhancement-mode pHEMT using Pd buried-gate technology

Chih Wei Yang*, Che Kai Lin, Da Wei Lin, Hsien Chin Chiu

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this work, two enhancement-mode (E-mode) GaAs-based high electron mobility transistors (HEMTs), grown by molecular beam epitaxy (MBE) system, have been fabricated and investigated. We evaporated traditional platinum (Pt) and palladium (Pd) as Schottky contact metals to observe high-temperature performance. Following the 1μm Pt/Ti/Au gate and Pd/Ti/Au gate metals deposition, the devices were thermally annealed at 200°C. Two devices DC and RF performance from 0°C to 100°C were measured. Because the platinum skins into Schottky Layer, the DC and RF characteristics were affected. Experimentally, the palladium gate device showed better DC, RF, and high-temperature characteristics. These advantages suggest that the palladium device is suitable for highspeed and high-power integrated circuit applications.

Original languageEnglish
Title of host publication2008 IEEE International Conference on Electron Devices and Solid-State Circuits, EDSSC
DOIs
StatePublished - 2008
Event2008 IEEE International Conference on Electron Devices and Solid-State Circuits, EDSSC - Hong Kong, China
Duration: 08 12 200810 12 2008

Publication series

Name2008 IEEE International Conference on Electron Devices and Solid-State Circuits, EDSSC

Conference

Conference2008 IEEE International Conference on Electron Devices and Solid-State Circuits, EDSSC
Country/TerritoryChina
CityHong Kong
Period08/12/0810/12/08

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