Subthreshold behavior models for short-channel junctionless tri-material cylindrical surrounding-gate MOSFET
13. Climate action
0103 physical sciences
01 natural sciences
DOI:
10.1016/j.microrel.2014.02.007
Publication Date:
2014-03-17T09:15:41Z
AUTHORS (4)
ABSTRACT
Abstract A novel junctionless tri-material cylindrical surrounding-gate (JLTMCSG) MOSFET is presented in this paper. The subthreshold behavior of JLTMCSG MOSFET is investigated by developing physical based analytical models for channel electrostatic potential, horizontal electric field, and subthreshold current. It is revealed that JLTMCSG MOSFET can effectively suppress DIBL and simultaneously improve carrier transport efficiency. It is also found that subthreshold current for JLTMCSG MOSFET can be significantly reduced by adopting both a small oxide thickness and a thin silicon channel. The accuracy of analytical model is verified by its good agreement with the three-dimensional numerical device simulator ISE.
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