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Layer-by-layer Synthesis and Transfer of Freestanding Conjugated Microporous Polymer Nanomembranes
Published on: December 15, 2015
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Nano-scale charge trapping memory based on two-dimensional conjugated microporous polymer.
Ayman Rezk1, Md Hasan Raza Ansari2, Kayaramkodath Chandran Ranjeesh3
1Department of Electrical Engineering and Computer Science, Khalifa University, Abu Dhabi, 127788, UAE.
Scientific Reports
|November 2, 2023
Summary
Researchers developed a novel two-dimensional conjugated microporous polymer (2D-CMP) for nanoscale memory. This pyrene and isoindigo (PI) based material demonstrates promising performance for future low-power, high-density electronic devices.
Area of Science:
- Materials Science
- Nanotechnology
- Organic Electronics
Background:
- Growing demand for high-density, high-performance flexible electronics.
- Two-dimensional conjugated microporous polymers (2D-CMPs) offer promising optoelectronic properties for advanced devices.
- Need for novel semiconductor nanostructures for memory applications.
Purpose of the Study:
- To report a novel donor-acceptor type 2D-CMP based on Pyrene and Isoindigo (PI).
- To investigate the potential of this PI-based 2D-CMP for nano-scale charge-trapping memory applications.
- To analyze charge carrier transport and entrapment mechanisms in a fabricated Metal-Insulator-Semiconductor (MIS) device.
Main Methods:
- Exfoliation of PI polymer into nanoparticles (NPs) approximately 2.5 nm thick.
- Fabrication of a Metal-Insulator-Semiconductor (MIS) device with PI-NPs embedded in the insulator layer.
- Characterization using Conductive Atomic Force Microscopy (cAFM) and theoretical analysis.
Main Results:
- Achieved reproducible on-and-off states with a wide memory window (ΔV) of 1.5 V.
- Demonstrated low operation voltage (<1 V), good retention (10^4 s), and endurance (10^3 cycles).
- PI-NPs function as nanoscale floating gates with deep trapping sites for charge carriers.
Conclusions:
- The novel PI-based 2D-CMP is suitable for nano-scale charge-trapping memory.
- The developed MIS device exhibits excellent memory characteristics.
- This 2D-CMP shows significant potential for future low-power, high-density memory applications.
