使用双层介电结构提高记忆电阻的均性
Yulin Liu1,2, Qilai Chen3, Yanbo Guo2
1School of Materials Science and Engineering, Xiangtan University, Xiangtan 411105, China.
Micromachines
|May 25, 2024
概括
研究人员开发了一种双层memristor,用于更统一的电阻随机访问存储器 (RRAM),这对于内存计算至关重要. 这一创新解决了RRAM性能不一致的问题,为稳定可靠的计算解决方案铺平了道路.
科学领域:
- 材料科学 材料科学 材料科学
- 电气工程 电气工程
- 计算机架构 计算机架构
背景情况:
- 电阻随机访问存储器 (RRAM) 是克服·诺伊曼计算瓶的关键技术.
- 当前的RRAM设备表现不均,这限制了它们的实际应用.
- 内存计算需要高度统一和稳定的内存设备.
研究的目的:
- 设计和制造具有增强均性和稳定性的双层介电记忆器.
- 为了研究双层结构对RRAM设备性能的影响.
- 为双层记忆器中的离子迁移机制提供物理模型.
主要方法:
- 制造Au/Ta2O5/HfO2/Ta/Pt (S3) 双层记忆器设备.
- 对S3设备与单层Au/HfO2/Pt (S1) 和Au/Ta2O5/Pt (S2) 设备进行比较分析.
- 设备统一性,重置电压波动和200个周期的电阻系数的表征.
- 对物理机制和离子迁移模型的分析.
主要成果:
- 这种S3双层的memristor表现出极好的统一性.
- 在200个周期内,低调电压波动 (2.44%) 和低电阻变化系数 (13.12%在HRS中,3.84%在LRS中).
- 与单层设备相比,双层设备显示出更好的线性和更多的导电性状态,用于多状态调节.
结论:
- 双轴介电记忆器为实现稳定和统一的RRAM性能提供了可行的解决方案.
- 拟议的设备设计和物理模型为制造高性能电阻式内存设备提供了新的途径.
- 这项工作通过解决关键的RRAM统一性挑战,为内存计算的进步做出了贡献.
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