[paper] On the Physical Behavior of Cryogenic IV and III-V Schottky Barrier MOSFET Devices

On the Physical Behavior of Cryogenic IV and III–V Schottky Barrier MOSFET Devices

Mike Schwarz, Member, IEEE, Laurie E. Calvet, Member, IEEE, John P. Snyder, Member, IEEE, Tillmann Krauss, Udo Schwalke, Senior Member, IEEE, and Alexander Kloes, Senior Member, IEEE

in IEEE TED , vol.PP, no.99, pp.1-8

doi: 10.1109/TED.2017.2726899

Abstract: The physical influence of temperature down to the cryogenic regime is analyzed in a comprehensive study and the comparison of IV and III-V Schottky barrier (SB) double-gate MOSFETs. The exploration is done using the Synopsys TCAD Sentaurus device simulator and first benchmarked with experimental data. The important device physics of both SB-MOSFETs and conventional MOSFETs are reviewed. The impact of temperature on device performance down to the liquid-nitrogen regime is then explored. We find reduced drive currents in SB-MOSFETs fabricated on small effective mass materials and that SB lowering can significantly improve SB-MOSFETs, especially at low temperatures [read more...]

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