Control of transconductance in high performance AlGaN/GaN FinFETs

Young Woo Jo, Dong Hyeok Son, Chul Ho Won, V. Sindhuri, Ji Hyun Kim, Jae Hwa Seo, In Man Kang, Jung Hee Lee

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

8 Scopus citations

Abstract

AlGaN/GaN-based fin-shaped field-effect transistors (FinFETs) with very steep sidewall and various fin-widths (Wfin) have been fabricated by utilizing electron-beam lithography and additional anisotropic sidewall wet etch in TMAH solution. The device with Wfin of 150 nm exhibits normally-on performance with threshold voltage of -2.5 V, suppression of current collapse phenomenon, low gate leakage current (10-11 A), low subthreshold swing (SS) of 68 mV/decade, and high linearity characteristic with extremely broad transconductance (gm). On the other hand, devices with Wfin = 50 and 70 nm exhibit normally-off performance with positive threshold voltage of 3.0 and 1.5 V, respectively, and less broad gm characteristics.

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.
Pages684-686
Number of pages3
ISBN (Electronic)9781479944033
DOIs
StatePublished - 14 Aug 2015
Event11th IEEE International Conference on Power Electronics and Drive Systems, PEDS 2015 - Sydney, Australia
Duration: 9 Jun 201512 Jun 2015

Publication series

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

Conference

Conference11th IEEE International Conference on Power Electronics and Drive Systems, PEDS 2015
Country/TerritoryAustralia
CitySydney
Period9/06/1512/06/15

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