Comparative experimental study of junctionless and inversion-mode nanowire transistors for analog applications
2020
We fabricated junction less and inversion-mode monocrystalline nanowire nMOSFETs down to L=18nm gate length and W=20nm width. We demonstrate record performance of nanowire junction less transistors for analog applications: $A_{VT}=1.4mV \cdot \mu$ m matching, $A_{v0}=62dB$ gain (L=200nm), $f_{T}=126GHz$ cut-off frequency and $f_{MAX}=182GHz$ maximum operating frequency (L=35nm). Junction Less transistor performances even exceed those of inversion-mode ones in terms of back-bias capability, low-frequency noise, hotcarrier degradation and fMAX. This is explained by junction less physics: channel length modulation, bulk conduction and high channel-depth sensitivity to back bias.
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