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<p>The transient negative capacitance (TNC) effect observed in ferroelectric materials offers a promising approach to reducing energy consumption in field-effect transistors. Scandium-alloyed wurtzite III-nitrides-based ferroelectric high electron mobility transistor (FerroHEMT) which combines the high piezoelectric coefficients and low coercive field ferroelectricity in ScAlN with the TNC effects, enables both high on-current and high-speed characteristics. In this paper, by self-consistently solving the Poisson equation and electron statistics, we derive the analytical compact model for charge–voltage (Q–V) profile for ScAlN/AlN/GaN 1D structure. The model accuracy is demonstrated by comparing the results against experimental and numerical simulation. The Verilog-A model can be embedded in Cadence Spectre for DC and Transient simulation.</p> Graphical abstract <p></p>

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Design and modeling of Scandium-alloyed wurtzite III-nitrides based ferroelectric heterostructure for power efficient applications

  • 期刊论文

  • 发表日期：

    2025年3月7日

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  • Ruilin Wang,
  • Dragica Vasileska,
  • Kexin Li

摘要

The transient negative capacitance (TNC) effect observed in ferroelectric materials offers a promising approach to reducing energy consumption in field-effect transistors. Scandium-alloyed wurtzite III-nitrides-based ferroelectric high electron mobility transistor (FerroHEMT) which combines the high piezoelectric coefficients and low coercive field ferroelectricity in ScAlN with the TNC effects, enables both high on-current and high-speed characteristics. In this paper, by self-consistently solving the Poisson equation and electron statistics, we derive the analytical compact model for charge–voltage (Q–V) profile for ScAlN/AlN/GaN 1D structure. The model accuracy is demonstrated by comparing the results against experimental and numerical simulation. The Verilog-A model can be embedded in Cadence Spectre for DC and Transient simulation.

Graphical abstract