Iontronics Using V₂CT MXene-Derived Metal-Organic Framework Solid Electrolytes

Area of Science:

• Materials Science
• Nanotechnology
• Electrochemistry

Background:

• Electronic applications of porous metal-organic frameworks (MOFs) are a growing research area.
• The use of MOF solid electrolytes in iontronics, leveraging their porous structure for ionic transport, has not been previously reported.

Purpose of the Study:

• To demonstrate MXene-derived two-dimensional porphyrinic MOF (MX-MOF) films as a novel proton-conducting electrolyte for iontronic devices.
• To investigate the suitability of MX-MOF films for standard device fabrication processes.

Main Methods:

• Fabrication of MXene-derived two-dimensional porphyrinic MOF (MX-MOF) films.
• Characterization of MX-MOF film quality, chemical stability, and compatibility with patterning processes (dry etching, lithography).
• Fabrication of an electric double-layer (EDL) transistor using MX-MOF as the ionic gate and MoS2 as the semiconducting channel.

Main Results:

• Demonstrated high-quality, chemically stable MX-MOF films.
• Confirmed the capability of MX-MOF films for standard device patterning processes.
• Successfully fabricated an EDL transistor utilizing MX-MOF as a solid electrolyte and proton conductor.

Conclusions:

• MX-MOF films serve as an electronic-grade proton-conducting electrolyte.
• The developed MX-MOF solid electrolyte is suitable for EDL transistor devices.
• This work has significant implications for the advancement of iontronics research and development.