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Related Experiment Videos

Reconfigurable Complementary Monolayer MoTe2 Field-Effect Transistors for Integrated Circuits.

Stefano Larentis1, Babak Fallahazad1, Hema C P Movva1

  • 1Microelectronics Research Center, Department of Electrical and Computer Engineering, The University of Texas at Austin , Austin, Texas 78758, United States.

ACS Nano
|April 18, 2017
PubMed
Summary

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Researchers developed a new complementary field-effect transistor using molybdenum ditelluride (MoTe2) with low-resistance contacts. This breakthrough enables advanced electronic circuits and devices like inverters and diodes.

Area of Science:

  • Materials Science
  • Condensed Matter Physics
  • Nanotechnology

Background:

  • Transition metal dichalcogenides (TMDs) show promise for future electronic switches.
  • Developing complementary field-effect transistors (FETs) is challenging due to the difficulty in achieving low-resistance electron and hole contacts on the same material.
  • Monolayer MoTe2 is a potential candidate for next-generation electronics.

Purpose of the Study:

  • To demonstrate an air-stable, reconfigurable complementary monolayer MoTe2 FET.
  • To overcome the limitations of contact resistance and threshold voltage tuning in TMD-based FETs.
  • To enable the development of complementary circuits using TMDs.

Main Methods:

  • Fabrication of a complementary monolayer MoTe2 field-effect transistor encapsulated in hexagonal boron nitride.
Keywords:
MoTe2hBN encapsulatedreconfigurabletransistortransition metal dichalcogenides

Related Experiment Videos

  • Utilizing electrostatically doped contacts for independent control of contact resistance and threshold voltage.
  • Implementing a multigate design with prepatterned bottom contacts.
  • Decoupling Schottky contacts from channel gating.

    • Main Results:

    • Achieved an air-stable, reconfigurable complementary monolayer MoTe2 FET.
    • Demonstrated independent low contact resistance and threshold voltage tuning.
    • Successfully decoupled Schottky contacts and channel gating.
    • Illustrated potential applications including a complementary inverter and a p-i-n diode.

    Conclusions:

    • The developed MoTe2 FET addresses key challenges in TMD-based electronics.
    • The multigate design with electrostatically doped contacts is effective for complementary circuits.
    • This work paves the way for advanced TMD-based complementary field-effect transistors and integrated circuits.