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Circuit Simulation Considering Electrical Coupling in Monolithic 3D Logics with Junctionless FETs.

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  • 1Department of Electrical, Electronic and Control Engineering and IITC, Hankyong National University, 327 Jungang-ro, Anseong-si, Gyenggi-do 17579, Korea.

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Summary
This summary is machine-generated.

A new junctionless field-effect transistor (JLFET) compact model enables circuit simulations for monolithic 3D integrated circuits (M3DICs). M3DIC-JLFET performance closely matches M3DIC-MOSFET, with overall M3DIC-MOSFET performance slightly superior.

Keywords:
JLFETcircuit simulationelectrical couplingjunctionless FETmonolithic 3D integrated circuit (IC)parameter extraction

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Area of Science:

  • Semiconductor device physics
  • Integrated circuit design
  • 3D integrated circuit technology

Background:

  • Monolithic 3D integrated circuits (M3DICs) offer advanced functionality.
  • Accurate compact models are crucial for simulating complex M3DICs.
  • Junctionless field-effect transistors (JLFETs) present an alternative to traditional MOSFETs.

Purpose of the Study:

  • To propose and validate a JLFET compact model for M3DIC circuit simulations.
  • To investigate the electrical coupling effects in stacked JLFETs within M3DICs.
  • To compare the performance of M3DICs built with JLFETs (M3DIC-JLFET) against those with MOSFETs (M3DIC-MOSFET).

Main Methods:

  • Extracted model parameters from the LETI-UTSOI (version 2.1) model for JLFETs.
  • Performed circuit simulations using technology computer-aided design and Synopsys HSPICE.
  • Compared simulation results of M3DIC-JLFET and M3DIC-MOSFET for various circuits.

Main Results:

  • The proposed JLFET compact model accurately simulates M3DIC-JLFET circuits.
  • Ring oscillator performance for M3DIC-JLFET varied by less than 3% compared to M3DIC-MOSFET.
  • Simulated inverter, NAND, NOR, multiplexer, and D flip-flop circuits showed slightly better overall performance for M3DIC-MOSFET.

Conclusions:

  • The JLFET compact model is suitable for M3DIC circuit simulations.
  • M3DIC-JLFETs demonstrate comparable performance to M3DIC-MOSFETs in critical applications like ring oscillators.
  • M3DIC-MOSFETs exhibit slightly superior overall performance compared to M3DIC-JLFETs in the simulated logic circuits.