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Enhancement-mode MOSFETs are pivotal components in electronics, distinguished by their capacity to act as highly efficient switches. They are part of the larger family of metal-oxide Semiconductor Field-Effect Transistors (MOSFETs). They are available in two types: p-channel and n-channel, each tailored to specific polarity operations.
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Metal-oxide-semiconductor field-effect Transistors, or MOSFETs, play a critical role in electronic circuits. They are primarily utilized for amplifying and switching signals.
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High-Performance Air-Stable Polymer Monolayer Transistors for Monolithic 3D CMOS logics.

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This study demonstrates high-performance polymer monolayer transistors by controlling molecular orientation and using a top-gate design. These transistors exhibit record mobility, stability, and enable 3D integration for advanced electronics.

Keywords:
complementary logicsdevice stabilitymonolithic 3D integrationpolymer monolayer transistorsstructure‐property relation

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Area of Science:

  • Materials Science
  • Organic Electronics
  • Nanotechnology

Background:

  • Polymer monolayer transistors offer ideal platforms for studying transport phenomena.
  • Poor understanding of structure-property relationships limits current polymer monolayer transistor performance.

Purpose of the Study:

  • To investigate structure-property relations in polymer monolayers.
  • To enhance polymer monolayer transistor performance and stability.
  • To explore 3D integration possibilities.

Main Methods:

  • Utilized 4D scanning confocal electron diffraction to characterize nanofibrillar microstructures and edge-on orientation.
  • Employed a top-gate configuration with CYTOP as the gate dielectric.
  • Fabricated and tested polymer monolayer transistors.

Main Results:

  • Demonstrated a self-confinement effect in polymer monolayers with specific microstructures and orientation.
  • Achieved field-effect mobility of 7.12 cm² V⁻¹ s⁻¹, an on/off ratio of 10⁸, and subthreshold swing of 0.21 V dec⁻¹.
  • Exhibited remarkable device stability over 1260 days due to top-gate architecture and morphologic lock effect.
  • Enabled monolithic 3D integration with n-type oxide transistors for hybrid complementary inverters.

Conclusions:

  • Controlling polymer chain alignment and π-stacking is crucial for high-performance monolayer transistors.
  • The developed top-gate architecture significantly improves transistor performance, stability, and facilitates 3D integration.
  • This work paves the way for advanced, stable, and integrated organic electronic devices.