Schottky barrier height enhancement for In0.52AlAs layer by using in-situ Ar plasma pre-treatment and its application to In0.52AlAs/In0.53 GaAs/InP HEMT's

Dae Hyun Kim, Young Ho Kim, Jae Eung Oh, Kwang Seok Seo

Research output: Contribution to journalConference articlepeer-review

3 Scopus citations

Abstract

To increase a schottky barrier height (SBH) for In0.52AlAs layer, in-situ Ar plasma pre-treatment method was proposed. Through the pre-treatment of Ar plasma before schottky metallization, a SBH of + 1.05 eV for In0.52AlAs layer was obtained by C-V measurement for a vertical type schottky diode. It was thought to be an effective removal of native oxide on InAlAs layer. More pre-treatment would result in a decrease of SBH due to a plasma induced damage effect. This process was applied to fabricate In0.52AlAs/In0.53GaAs/InP HEMT, which led to an improvement in sub-threshold leakage, sub-threshold swing and reverse breakdown voltage characteristics.

Original languageEnglish
Pages (from-to)102-105
Number of pages4
JournalConference Proceedings - International Conference on Indium Phosphide and Related Materials
StatePublished - 2003
Event2003 International Conference Indium Phosphide and Related Materials - Santa Barbara, CA, United States
Duration: 12 May 200316 May 2003

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