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Body-contacted SOI MOSFET structure with fully bulk CMOS compatible layout and process

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4 Author(s)
Yo-Hwan Koh ; Hyundai Electron. Ind. Co. Ltd., Kyoungki-do, South Korea ; Jin-Hyeok Choi ; Nam, Myung-Hee ; Yang, Ji-Woon

A new SOI MOSFET structure to reduce the floating body effect is proposed and successfully demonstrated. The key idea of the proposed structure is that the field oxide does not consume the silicon film completely, so that the well contact can suppress the body potential increase in SOI MOSFET through the remaining silicon film between the field oxide and buried oxide. The measured results show the suppressed floating body effect as expected. This new structure retains most of the advantages in the propagation delay of the conventional SOI MOSFET without body potential instability. An additional advantage of the proposed structure is that the layout and process are the same as those of bulk CMOS.

Published in:

Electron Device Letters, IEEE  (Volume:18 ,  Issue: 3 )