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Advances in Nano Research
  Volume 3, Number 1, March 2015, pages 49-54
DOI: http://dx.doi.org/10.12989/anr.2015.3.1.049
 

Quantum modulation of the channel charge and distributed capacitance of double gated nanosize FETs
Ferdinand V. Gasparyan and Vladimir M. Aroutiounian

 
Abstract     [Full Text]
    The structure represents symmetrical metal electrode (gate 1) – front SiO2 layer – n-Si nanowire FET – buried SiO2 layer – metal electrode (gate 2). At the symmetrical gate voltages high conductive regions near the gate 1 – front SiO2 and gate 2 – buried SiO2 interfaces correspondingly, and low conductive region in the central region of the NW are formed. Possibilities of applications of nanosize FETs at the deep inversion and depletion as a distributed capacitance are demonstrated. Capacity density is an order to ~uF⁄cm2 . The charge density, it distribution and capacity value in the nanowire can be controlled by a small changes in the gate voltages. at the non-symmetrical gate voltages high conductive regions will move to corresponding interfaces and low conductive region will modulate non-symmetrically. In this case source-drain current of the FET will redistributed and change current way. This gives opportunity to investigate surface and bulk transport processes in the nanosize inversion channel.
 
Key Words
    quantization; charge modulation; nanosize FET; capacity
 
Address
Ferdinand V. Gasparyan and Vladimir M. Aroutiounian: Department of Semiconductor Physics and Microelectronics, Yerevan State University, 1 Alex Manoogian St., Yerevan 0025, Armenia
 

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