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调查电子传输层对透明BST基础RRAM设备中的不对称双极切换的影响

Kai-Huang Chen¹, Ming-Cheng Kao², Hsin-Chin Chen¹

¹Department of Electronic Engineering, Cheng Shiu University, Kaohsiung 83347, Taiwan.

|November 27, 2025

概括

二泰坦酸 (Ba_0.6Sr_0.4TiO₃) 薄膜显示出对电阻随机存取存储器 (RRAM) 的承诺. 使用电子传输层 (ETL) 的接口工程显著降低了泄漏电流,并提高了设备的稳定性.

科学领域:

材料科学材料科学材料科学
固态物理固态物理
电气工程电气工程

背景情况:

电阻随机访问存储器 (RRAM) 提供非易失性数据存储.
酸 (Ba_0.6Sr_0.4TiO₃或BST) 是RRAM切换层的一个有前途的铁电材料.
高泄漏电流和不稳定的开关限制基于BST的RRAM性能.

研究的目的:

研究BST铁电氧化物作为RRAM设备中的切换层.
评估使用电子传输层 (ETL) 的接口工程对RRAM性能的影响.
优化BST沉积和处理,以提高电阻开关稳定性,防止泄漏和设备可靠性.

主要方法:

BST薄膜通过RF磁喷射沉积在ITO基板上.
使用X射线衍射 (XRD) 和场发射扫描电子显微镜 (FE-SEM) 的结构和形态表征.
用Al顶电极制造金属绝缘体金属 (MIM) RRAM设备,并通过I-V测量测试电性质.

主要成果:

优化的BST薄膜 (40%O2) 显示稳定的切换 (3V,1: 1开/关比,10-8 泄漏).
快速的热将开/关比提高到2,但泄漏率增加到10-3 A.
整合一个ETL抑制泄漏到10-5A,同时保持1:2的开/关比.
较高的氧气度 (60%) 诱导了从双极到单极切换的过渡.

结论:

电子传输层 (ETL) 有效地减少漏电流和稳定基于BST的RRAM中的切换特性.
接口工程对于开发基于BST的透明,低功耗和高可靠性的RRAM设备至关重要.
该研究为通过材料和接口控制优化铁电RRAM性能提供了宝贵的见解.

关键词:

在 BST 中, BST 是 BST.第十五章没有了双极切换的特征双极切换的特征电子输送层是一种电子输送层.电子导电机制电子导电机制电阻随机访问内存的阻力.

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