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电化学活性顶部电极材料对纳米离子导电桥的影响 Y2O3 随机访问存储器
Yoonjin Cho1, Sangwoo Lee1, Seongwon Heo1
1School of Electronic and Electrical Engineering, Kyungpook National University, Daegu 41566, Republic of Korea.
Nanomaterials (Basel, Switzerland)
|March 27, 2024
概括
银顶电极可以提高Y2O3电阻随机存储器 (RRAM) 设备的性能. 在Y2O3中更快的银离子迁移降低了SET电压,并提高了对非挥发性内存应用的耐久性.
科学领域:
- 材料科学 材料科学 材料科学
- 电气工程 电气工程
- 固态物理 固态物理
背景情况:
- 基于Y2O3的电阻随机访问存储器 (RRAM) 设备对于非易失性存储器至关重要.
- 顶部电极 (TEs) 的选择显著影响Y2O3 RRAM设备的电气特性.
- 了解导电线材的形成是优化RRAM性能的关键.
研究的目的:
- 为了研究不同顶部电极 (Ag和Cu) 对Y2O3RRAM设备性能的影响.
- 分析氧化,离子迁移和减少导电线材形成的作用.
- 阐明影响电阻开关特征的TEs电化学性质.
主要方法:
- 使用Ag和Cu TEs制造sol-gel加工的Y2O3 RRAM设备.
- ITO/Y2O3/Ag 和 ITO/Y2O3/Cu RRAM 设备的电气特性.
- 在Y2O3活性通道内分析氧化过程和移动离子迁移.
主要成果:
- 与Cu TEs相比,Ag TEs可以更容易地促进导电丝的形成.
- 在Y2O3内,Ag移动离子的快速迁移导致SET电压降低.
- 观察到Ag TEs的编程-删除周期 (耐力) 得到改善.
结论:
- TEs的电化学特性对RRAM性能至关重要.
- 由于离子迁移速度更快,Ag TEs在Y2O3 RRAM中提供了更高的性能.
- 这项研究提供了对优化基于金属氧化物的原子开关和导电金属桥梁丝纤维细胞的见解.
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