AlGaN/AlN/GaN MOS-HEMTs with Al2O3 gate dielectric formed by using ozone water oxidation technique

C. S. Lee, H. Y. Liu, W. C. Hsu, T. T. Wu, H. S. Huang, S. F. Chen, Y. C. Yang, B. C. Chiang, H. C. Chang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This work presents Al0.3Ga0.7N/AlN/GaN metal-oxide-semiconductor high electron mobility transistors (MOS-HEMTs), grown on the Si substrate, with high-k Al2O3 gate dielectric. The present AlGaN/AlN/GaN MOS-HEMT design (the control Schottky-gate HEMT) has showed two-terminal gate-drain breakdown voltage (BVGD)/turn-on voltage (Von) of -146.6/1.12 (-96.4/0.98) V, maximum extrinsic transconductance (gm, max) of 167.3 (124.2) mS/mm, saturated IDS density at VGS = 0 V (IDSS0) of 701.4 (538.2) mA/mm, maximum IDS density (IDS, max) of 927.9 (646) mA/mm, AV of 211.8 (172.5), unity-gain cut-off frequency (fT) of 16.8 (11) GHz, maximum oscillation frequency (fmax) of 18.8 (14) GHz, 2.4-GHz output power (Pout) of 17.2 (15.7) dBm, power gain (GS) of 14.1 (13.4) dB, and power-added efficiency (PAE) of 32.2% (27.4%). Consequently, superior improvements of 52.2% in BVGD, 43.6% in IDS, max, 34.7% gm, max, and 52.7%/34.3% in fT/fmax are achieved as compared with a control HEMT device.

Original languageEnglish
Title of host publication2015 IEEE 11th International Conference on Power Electronics and Drive Systems, PEDS 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages194-196
Number of pages3
ISBN (Electronic)9781479944033
DOIs
Publication statusPublished - 2015 Aug 14
Event11th IEEE International Conference on Power Electronics and Drive Systems, PEDS 2015 - Sydney, Australia
Duration: 2015 Jun 92015 Jun 12

Publication series

NameProceedings of the International Conference on Power Electronics and Drive Systems
Volume2015-August

Other

Other11th IEEE International Conference on Power Electronics and Drive Systems, PEDS 2015
Country/TerritoryAustralia
CitySydney
Period15-06-0915-06-12

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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