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Features of Ultimately Miniaturized MOSFETs/SOI: A New Stage in Device Physics and Design Concepts
IEICE TRANSACTIONS on Electronics
Publication Date: 1997/03/25
Print ISSN: 0916-8516
Type of Manuscript: Special Section INVITED PAPER (Special Issue on SOI Devices and Their Process Technologies)
Category: Device and Process Technologies
SOI, SIMOX, MOSFET, down-scaling, ultra-thin,
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This paper describes what happens when the silicon layer is extremely thinned. The discussion shows that quantum mechanical short-channel effects impose limits on the down-scaling of MOSFET/SOI devices. However, thinning the silicon layer should bring new possibilities such as mobility enhancement, velocity overshoot enhancement, suppression of band-to-band tunneling, suppression of impact ionization and so on. Furthermore, the non-stationary energy transport in extremely miniaturized ultra-thin MOSFET/SOI devices is also addressed from the viewpoint of hot-carrier immunity. Related device physics are also discussed in order to consider the design methodology for contemporary MOSFET/SOI devices and new device applications for the future.