High current Si field emission devices with plasma passivation and HfC coating

M. R. Rakhshandehroo, S. W. Pang

Research output: Chapters, Conference Papers, Creative and Literary WorksRGC 32 - Refereed conference paper (with host publication)peer-review

Abstract

Surface passivation effects on the emission characteristics of gated Si field emitters were studied by exposing the samples to a H2 plasma for 2 min before testing. The H2 plasma was generated at 2 mTorr with 50 W source power and flow rate of 20 sccm. No rf power was applied to the stage to avoid sputtering of emitter tips. The emission current at a gate voltage of 100 V increased from 152 to 278 μA and the turn-on voltage reduced from 32 to 26 V after H2 passivation. Emitter tips were also coated with MoSi and HfC to improve their emission characteristics. At a gate voltage of 100 V, the emission current from an array of 100 tips increased from 230 μm for uncoated emitters to 268 μA for emitters coated with MoSi and 389 μA for samples coated with HfC.
Original languageEnglish
Title of host publicationProceedings of the IEEE International Vacuum Microelectronics Conference, IVMC
PublisherIEEE
Pages291-292
ISBN (Print)0-7803-5096-0
DOIs
Publication statusPublished - 1998
Externally publishedYes
EventEleventh International Vacuum Microelectronics Conference, IVMC 1998 - Asheville, NC, USA
Duration: 19 Jul 199824 Jul 1998

Conference

ConferenceEleventh International Vacuum Microelectronics Conference, IVMC 1998
CityAsheville, NC, USA
Period19/07/9824/07/98

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