Noise in Submicron Metal-Oxide-Semiconductor Field Effect Transistors: Lateral Electron Density Distribution and Active Trap Position

Noise in Submicron Metal-Oxide-Semiconductor Field Effect Transistors: Lateral Electron Density Distribution and Active Trap Position

WoS Article

Experiments were carried out for the n-channel devices, processed in a 0.3 um spacer less Complementary Metal–Oxide–Semiconductor technology. Random-Telegraph-Signal measurements were performed for the constant gate voltage. It is supposed that electron concentration in the channel decreases from the source to the drain contact. Lateral component of the electric field is inhomogeneous in the channel and it has a minimum value near the source and reaching the maximum value near the drain electrode. Drain current is given by two components – diffusion and drift ones. Diffusion current component is independent on the x-coordinate and it is equal to the drift current component for the low electric field. The model explaining the experimentally observed capture time constant dependence on the lateral electric field and the trap position is given. From the dependence of the capture time constant tc on the drain current could be calculated x-coordinate of the trap position.

Experiments were carried out for the n-channel devices, processed in a 0.3 um spacer less Complementary Metal–Oxide–Semiconductor technology. Random-Telegraph-Signal measurements were performed for the constant gate voltage. It is supposed that electron concentration in the channel decreases from the source to the drain contact. Lateral component of the electric field is inhomogeneous in the channel and it has a minimum value near the source and reaching the maximum value near the drain electrode. Drain current is given by two components – diffusion and drift ones. Diffusion current component is independent on the x-coordinate and it is equal to the drift current component for the low electric field. The model explaining the experimentally observed capture time constant dependence on the lateral electric field and the trap position is given. From the dependence of the capture time constant tc on the drain current could be calculated x-coordinate of the trap position.

RANDOM TELEGRAPH SIGNALS; LOW-FREQUENCY NOISE; RTS NOISE; GATE OXIDE; MOSFETS; FLUCTUATIONS; EXTRACTION; MOBILITY; CURRENTS; DEFECTS

RANDOM TELEGRAPH SIGNALS; LOW-FREQUENCY NOISE; RTS NOISE; GATE OXIDE; MOSFETS; FLUCTUATIONS; EXTRACTION; MOBILITY; CURRENTS; DEFECTS

SEDLÁKOVÁ, V.; ŠIKULA, J.; CHVÁTAL, M.; PAVELKA, J.; TACANO, M.; TOITA, M.

2013

07.02.2012

The Japan Society of Applied Physics

Japonsko

0021-4922

JAPANESE JOURNAL OF APPLIED PHYSICS

2012 (51)

1

Japan

024105-1

024105-5

5