Abstract
This paper presents DC and RF characterization as
well as modeling of vertical InAs nanowire MOSFETs with LG =
200 nm and Al2O3/HfO2 high-κ dielectric. Measurements at VDS =
0.5 V show that high transconductance (gm = 1.37 mS/μm), high
drive current (IDS = 1.34 mA/μm), and low on-resistance (RON =
287 Ωμm) can be realized using vertical InAs nanowires on Si
substrates. By measuring the 1/f-noise, the gate area normalized
gate voltage noise spectral density, SVG·LG·WG, is determined to
be lowered one order of magnitude compared to similar devices
with a high-κ film consisting of HfO2 only. Additionally, with a
virtual source model we are able to determine the intrinsic
transport properties. These devices (LG = 200 nm) show a high
injection velocity (vinj = 1.7·107 cm/s) with a performance
degradation for array FETs predominantly due to an increase in
series resistance.
well as modeling of vertical InAs nanowire MOSFETs with LG =
200 nm and Al2O3/HfO2 high-κ dielectric. Measurements at VDS =
0.5 V show that high transconductance (gm = 1.37 mS/μm), high
drive current (IDS = 1.34 mA/μm), and low on-resistance (RON =
287 Ωμm) can be realized using vertical InAs nanowires on Si
substrates. By measuring the 1/f-noise, the gate area normalized
gate voltage noise spectral density, SVG·LG·WG, is determined to
be lowered one order of magnitude compared to similar devices
with a high-κ film consisting of HfO2 only. Additionally, with a
virtual source model we are able to determine the intrinsic
transport properties. These devices (LG = 200 nm) show a high
injection velocity (vinj = 1.7·107 cm/s) with a performance
degradation for array FETs predominantly due to an increase in
series resistance.
Original language | English |
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Pages (from-to) | 2761-2767 |
Journal | IEEE Transactions on Electron Devices |
Volume | 60 |
Issue number | 9 |
DOIs | |
Publication status | Published - 2013 |
Subject classification (UKÄ)
- Electrical Engineering, Electronic Engineering, Information Engineering
- Condensed Matter Physics
Free keywords
- MOSFET
- RF
- InAs
- Nanowire (NW)