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Content Provider | IEEE Xplore Digital Library |
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Author | Yoon, S.F. Gay, B.P. Zheng, H.Q. Kam, H.T. Degenhardt, J. |
Copyright Year | 2000 |
Description | Author affiliation: Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore (Yoon, S.F.) |
Abstract | Double heterojunction (DH) In/sub 0.48/Ga/sub 0.52/P/In/sub 0.20/Ga/sub 0.80/As and strained single heterojunction (SSH) In/sub 0.40/Ga/sub 0.60/P/In/sub 0.20/Ga/sub 0.80/As/GaAs high electron mobility transistor (HEMT) structures were grown by solid-source molecular beam epitaxy (SSMBE) using a valved phosphorus cracker cell. The DC and RF performance of the SSH-HEMT and DH-HEMT were compared with the single heterojunction (SH) HEMT. The results show a significant improvement in device characteristics in the SSH-HEMT with In/sub 0.40/Ga/sub 0.60/P spacer and Schottky layer, due to better carrier confinement in the channel. The SSH-HEMT with 0.35-/spl mu/m gate length exhibits a peak transconductance (G/sub m/) of 470 mS/mm, maximum drain current (I/sub DSmax/) of 550 mA/mm, and current gain cut-off frequency (f/sub T/) of 50 GHz. These values are approximately 7%, 10% and 25% higher than the respective values for a DH-HEMT of identical gate length. |
Starting Page | 126 |
Ending Page | 129 |
File Size | 432718 |
Page Count | 4 |
File Format | |
ISBN | 0780363205 |
ISSN | 10928669 |
DOI | 10.1109/ICIPRM.2000.850248 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2000-05-14 |
Publisher Place | USA |
Access Restriction | Subscribed |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | DH-HEMTs Heterojunctions HEMTs Gallium arsenide MODFETs Molecular beam epitaxial growth Radio frequency Carrier confinement Transconductance Cutoff frequency |
Content Type | Text |
Resource Type | Article |
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