Gate leakage lowering and kink current suppression for antimonide-based field-effect transistors

H. K. Lin*, Y. C. Lin, F. H. Huang, T. W. Fan, P. C. Chiu, J. I. Chyi, C. H. Ko, T. M. Kuan, M. K. Hsieh, W. C. Lee, C. H. Wann

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

8 Scopus citations

Abstract

Conventional InAs/AlSb HEMTs suffer from chemical instability in materials and high kink current. To avoid these drawbacks, this work proposes a novel layer structure of an InAsSb/AlSb HEMT and a novel two-step passivation process. Performance improvements are reduced dc output conductance by approximately 4.6 times at VDS = 0.5 V and ID = 100 mA/mm, and gate leakage to 1 × 10-3 mA/mm from 4 at VGS = -1.2 V and VDS = 0.8 V compared with those of two InAs/AlSb HEMTs, one with the conventional one-step and the other with the proposed two-step passivation process. Both dc and rf performances show strong evidences of impact ionization suppression.

Original languageEnglish
Pages (from-to)475-478
Number of pages4
JournalSolid-State Electronics
Volume54
Issue number4
DOIs
StatePublished - 04 2010
Externally publishedYes

Keywords

  • HEMT
  • InAs/AlSb

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