InGaAs-on-Insulator MOSFETs Featuring Scaled Logic Devices and Record RF Performance

We demonstrate scaled InGaAs-on-insulator FinFETs and planar MOSFETs on Si substrate for low power logic and RF applications. This Si-CMOS compatible technology implements SiNx source-drain spacers and doped extensions for reduced overlap capacitances. FinFETs with performance for logic applications matching state-of-the-art are demonstrated. Simultaneously, ft and fmax of 400 and 100 GHz are achieved respectively, the highest reported ft for a III-V MOSFET on Si. Finally, we explore the use of an extended gate line to reduce gate resistance, offering balanced ft/fmax of 215/300 GHz, the first report of III-V RF devices on Si matching state of the art Si-CMOS.

By: C.B. Zota, C. Convertino, V. Deshpande, T. Merkle, M. Sousa, D. Caimi, L. Czornomaz

Published in: 2018 IEEE Symposium on VLSI Technology , IEEE, p.10.1109/VLSIT.2018.8510631 in 2018


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