Related Experiment Video
Updated: Oct 13, 2025
08:07
Assembly and Characterization of Biomolecular Memristors Consisting of Ion Channel-doped Lipid Membranes
Published on: March 9, 2019
8.0K
Rational Design on Controllable Cation Injection with Improved Conductive-Bridge Random Access Memory by Glancing
Yu-Chuan Shih1,2,3, Ying-Chun Shen1,2,3, Yen-Kai Cheng1,2,3
1Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan.
ACS Applied Materials & Interfaces
|November 15, 2021
Summary
This study introduces a novel conductive-bridge random access memory (CBRAM) using spike-shaped electrodes to improve filament control and device reliability. This advancement enhances memory performance and enables potential use in neuromorphic applications.
Area of Science:
- Materials Science
- Solid-State Electronics
- Nanotechnology
Background:
- Conductive-bridge random access memory (CBRAM) offers promising nonvolatile memory technology.
- Resistive switching in CBRAM relies on conducting filament formation/dissolution.
- Controlling cation injection into the electrolyte layer is crucial for reliable switching.
Purpose of the Study:
- To propose a new CBRAM architecture with spike-shaped electrodes for localized cation injection.
- To investigate the influence of electrode topography on filament formation and device performance.
- To enhance the reliability and multilevel characteristics of CBRAM devices for neuromorphic applications.
Main Methods:
- Fabrication of spike-shaped silver (Ag) electrodes using Al2O3 nanopillar arrays via glancing angle deposition.
- Integration of these electrodes with a TiO2 switching layer and Pt bottom electrode.
- Characterization of resistive switching behavior, endurance, voltage disturbance, and multilevel characteristics.
Main Results:
- The spike-shaped Ag electrodes act as a physical diffusion barrier, localizing Ag cation injection.
- The dimensions of Ag plugs, controlled by Al2O3 topography, influence conductive filament dimensionality.
- The proposed device demonstrates improved endurance and reduced voltage disturbance compared to planar devices.
- Enhanced multilevel characteristics were observed, indicating potential for analogue synapse applications.
Conclusions:
- The spike-shaped electrode architecture effectively controls filament formation in CBRAM.
- This design enhances device reliability and performance metrics like endurance and voltage stability.
- The developed CBRAM device shows significant potential for use as analogue synapses in neuromorphic computing.
