Analysis of Lanthanum Oxide Based Double-Gate SOI MOSFET using Monte-Carlo Process

Area of Science:

• Semiconductor Physics
• Materials Science
• Nanotechnology

Background:

• Focuses on Double-Gate (DG) Metal-Oxide-Semiconductor Field-Effect Transistors (MOSFETs) using Silicon On-Insulator (SOI) technology.
• Highlights the use of Lanthanum Oxide (La2O3) as a high-k dielectric interface material between gates and the silicon channel.
• Addresses the need for advanced materials in nanoscale devices to overcome scalability challenges.

Purpose of the Study:

• To propose and analyze a novel DG SOI MOSFET design incorporating a single material and La2O3 dielectric.
• To investigate the electrical properties and performance of this proposed device structure.
• To evaluate its suitability for future nanoscale electronic applications.

Main Methods:

• Utilizes Monte Carlo (MC) simulation to analyze the device physics and electrical characteristics.
• Examines Conduction Band Energy (Ec) profiles, electron sheet carrier densities (ns), electric fields, and potential distribution.
• Simulates particle movement and average velocity within the nanoscale channel.

Main Results:

• Achieved a peak electric field (E) of 6x10^5 V/cm and an average drift velocity (υavg) of 1.6x10^7 cm/s.
• Observed a Conduction Band Energy drop of -0.04 eV from the source to the drain side (4% of the operating region).
• Demonstrated the effectiveness of MC simulation for high-energy transport and nanoscale modeling.

Conclusions:

• The proposed DG SOI MOSFET design offers significant advantages for overcoming scalability challenges in emerging technologies.
• Nanomaterial-based devices, like the one proposed, exhibit superior performance and suitability for downscaling compared to conventional devices.
• This design is ideal for reducing packaging density and advancing nanotechnology in electronics.