Self-Positioned Nanosized Mask for Transparent and Flexible Ferroelectric Polymer Nanodiodes Array

Area of Science:

• Materials Science
• Nanotechnology
• Electronics Engineering

Background:

• Ferroelectric polymer nanodiodes are crucial for advanced transparent and flexible nonvolatile resistive memory.
• Fabricating high-density arrays of these nanodiodes presents significant challenges.

Purpose of the Study:

• To introduce a facile and innovative method for fabricating ferroelectric polymer nanodiode arrays.
• To demonstrate the potential of these arrays for next-generation transparent and flexible memory devices.

Main Methods:

• Utilized block copolymer self-assembly (polystyrene-block-poly(2-vinylpyridine)) and oxygen plasma etching.
• Employed gold nanoparticles (GNPs) as self-positioned etching masks on a P(VDF-TrFE) film/ITO-coated PET substrate.
• Characterized individual nanodiode properties using current-voltage (I-V) curves.

Main Results:

• Successfully fabricated a high-density array of P(VDF-TrFE) nanoislands with GNPs acting as etching masks.
• Confirmed individual diode properties for each nanoisland.
• Demonstrated high transparency and maintained diode properties after 1000 bending cycles.

Conclusions:

• The developed method is effective for creating transparent and flexible ferroelectric polymer nanodiode arrays.
• These arrays show promise for next-generation transparent and flexible nonvolatile memory applications.