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Improved Uniformity of TaOx-Based Resistive Switching Memory Device by Inserting Thin SiO2 Layer for Neuromorphic
Dongyeol Ju1, Sunghun Kim1, Junwon Jang1
1Division of Electronics and Electrical Engineering, Dongguk University, Seoul 04620, Republic of Korea.
Materials (Basel, Switzerland)
|September 28, 2023
Summary
This study introduces a TaOx/SiO2 bilayer resistive switching memory (RRAM) device. The device improves uniformity and retention by localizing conductive paths, showing potential for future neuromorphic applications.
Area of Science:
- Materials Science
- Solid State Physics
- Nanotechnology
Background:
- Resistive random-access memory (RRAM) devices are promising for next-generation memory due to their characteristics.
- Key challenges include resistance state variation and operating voltage issues.
Purpose of the Study:
- To propose and investigate a TaOx/SiO2 bilayer RRAM device.
- To address the uniformity and retention issues in RRAM devices.
Main Methods:
- Fabrication of TaOx/SiO2 bilayer devices.
- Characterization using Transmission Electron Microscopy (TEM) and X-ray Photoelectron Spectroscopy (XPS).
- Investigation of neuromorphic properties using various electric pulses.
Main Results:
- The inserted SiO2 layer effectively localizes the conductive path.
- Improved uniformity in cycle-to-cycle endurance and retention was observed.
- The device demonstrated potential for neuromorphic system applications.
Conclusions:
- The TaOx/SiO2 bilayer structure is a viable approach to enhance RRAM performance.
- The localized conductive path significantly improves device reliability.
- The device shows promise for advanced memory and neuromorphic computing applications.
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