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Paper based flexible MoS2-CNT hybrid memristors
B Raju Naik1, Nitika Arya1, Viswanath Balakrishnan1
1School of Mechanical and Materials Engineering, Indian Institute of Technology, Mandi, Himachal Pradesh-175075, India.
Nanotechnology
|February 16, 2024
Summary
We developed novel molybdenum disulfide/carbon nanotube (MoS2/CNT) hybrid nanostructures for flexible memristors on biodegradable paper. These devices show excellent electrical and mechanical stability, offering a sustainable alternative for future electronics.
Area of Science:
- Materials Science
- Nanotechnology
- Electronics Engineering
Background:
- Memristors are crucial for next-generation computing, but their application in flexible and sustainable electronics remains challenging.
- Molybdenum disulfide (MoS2) and carbon nanotubes (CNTs) are promising materials for electronic devices due to their unique properties.
Purpose of the Study:
- To create and characterize MoS2/CNT hybrid nanostructures for memristor applications on flexible, biodegradable cellulose paper.
- To investigate the effect of varying CNT weight percentages on the MoS2 conductivity and memristor performance.
- To evaluate the electrical, mechanical, and synaptic plasticity characteristics of the developed memristor devices.
Main Methods:
- Fabrication of MoS2/CNT hybrid nanostructures with 10% and 20% CNT weight percentages on cellulose paper.
- Characterization of memristor device performance, including SET voltage (VSET), data retention, and cyclic stability.
- Assessment of mechanical stability through bending tests.
- Analysis of conduction mechanisms using percolation and defect-induced filament formation models.
- Evaluation of synaptic plasticity by simulating potentiation and depression.
Main Results:
- The MoS2/CNT device with 10% CNT exhibited a low VSET of 2.5 V.
- The memristor demonstrated a long data retention time of ~104 s and stability over 102 cycles.
- High mechanical stability was confirmed through 1000 bending cycles.
- Conduction mechanisms were attributed to percolation and defect-induced filament formation.
- The device successfully simulated synaptic potentiation and depression, indicating potential for neuromorphic computing.
Conclusions:
- MoS2/CNT hybrid nanostructures on cellulose paper are viable for flexible memristor applications.
- The developed devices offer excellent electrical and mechanical properties, along with synaptic plasticity.
- This work presents a sustainable approach to electronic waste reduction through biodegradable paper-based electronics.
