High-mobility field effect transistors based on supramolecular charge transfer nanofibres

Area of Science:

• Materials Science
• Organic Electronics
• Supramolecular Chemistry

Background:

• Organic semiconductors are crucial for developing advanced electronic devices.
• Charge transfer complexes offer unique electronic properties for device applications.
• Self-assembly provides a pathway for ordered nanostructure fabrication.

Purpose of the Study:

• To investigate the self-assembly of coronene tetracarboxylate (CS) and dodecyl substituted unsymmetric viologen derivative (DMV).
• To fabricate and characterize field-effect transistors (FETs) using these self-assembled nanofibres.
• To evaluate the performance of the FETs under ambient conditions and their regeneration capabilities.

Main Methods:

• Supramolecular self-assembly of CS and DMV molecules.
• Fabrication of organic field-effect transistors (OFETs).
• Electrical characterization of the devices under ambient conditions.

Main Results:

• Self-assembled charge transfer supramolecular nanofibres were successfully formed.
• The nanofibres exhibited high charge carrier mobility, functioning as active channels in FETs.
• The devices demonstrated stable operation under ambient conditions.
• The transistors showed a remarkable ability to regenerate in the presence of water.

Conclusions:

• Charge transfer supramolecular nanofibres of CS and DMV are promising materials for organic electronics.
• The developed FETs offer high performance and environmental robustness.
• The regenerative capability of the devices opens new avenues for sustainable electronic applications.