Interface-Driven Multifunctionality in Two-Dimensional TiO₂ Nanosheet/Poly(Dimercaptothiadiazole-Triazine) Hybrid...

Area of Science:

• Materials Science
• Nanotechnology
• Electronics

Background:

• Interface engineering is crucial for developing advanced electronic devices.
• Multifunctional properties in hybrid nanostructures are highly sought after.
• Titanium dioxide nanosheets (TiO2-NS) and poly(dimercaptothiadiazole-triazine) [Poly(DMcT-CC)] are promising materials.

Purpose of the Study:

• To fabricate and characterize a hybrid TiO2-NS/Poly(DMcT-CC) device.
• To investigate the interface-activated multifunctional properties, including resistive switching (RS) and UV sensing.
• To demonstrate the potential of interface manipulation for novel electronic applications.

Main Methods:

• Fabrication of hybrid devices via spin coating Poly(DMcT-CC) on TiO2-NS.
• Characterization of resistive switching, negative differential resistance, diode behavior, and UV sensing.
• Impedance spectroscopy to analyze interface properties.

Main Results:

• The hybrid device exhibits significantly enhanced RS (four orders of magnitude) compared to pristine materials due to p-n junction formation.
• Stable resistive random access memory characteristics were observed, with the interface acting as a carrier trapping center.
• A threefold current increment was achieved for UV light sensing at 60 mV.

Conclusions:

• The NS/polymer interface is key to the multifunctional properties of the hybrid device.
• Interface engineering enables enhanced resistive switching and UV sensing capabilities.
• This work highlights the potential of manipulating such interfaces for developing advanced hybrid electronic structures.