基于BiFeO3的低功率高度灵活的电阻随机访问存储器 (RRAM) 与负差电阻 (NDR) 的共存
Chandra Prakash1, Ankit K Yadav1, Ambesh Dixit1
1Advance Materials and Device (A-MAD) Laboratory, Department of Physics, IIT Jodhpur, Rajasthan, 342030, India. ambesh@iitj.ac.in.
Physical chemistry chemical physics : PCCP
|July 17, 2023
概括
这项研究展示了在PET上使用铜/比斯木铁/聚甲酸/氧化的柔性电阻随机访问内存. 该设备具有稳定的电阻切换和负差电阻,非常适合下一代电子存储器.
科学领域:
- 材料科学 材料科学 材料科学
- 固态电子 固态电子
- 纳米技术纳米技术
背景情况:
- 灵活的电子产品需要具有非挥发性特征的先进内存设备.
- 电阻随机存取内存 (RRAM) 由于其可扩展性和低功耗,提供了一个有前途的解决方案.
- 铁 (BFO) 和聚甲基酸 (PMMA) 正在作为RRAM的活性材料进行探索.
研究的目的:
- 为了研究一个结合BFO和PMMA的灵活设备的电阻随机访问内存特征.
- 评估设备在各种条件下的性能,包括重复循环,长期保留和机械应力 (曲和拉伸).
- 了解对观察到的电阻切换行为负责的潜在机制.
主要方法:
- 在PET基板上制造具有特定多层结构的灵活RRAM设备:Cu/BFO/PMMA/ITO.
- 电气表征包括耐力 (100+周期),保留 (10^4秒) 和写读-删除-读脉冲测试.
- 使用电流-电压 (I-V) 特性对电阻开关机制的分析和在曲和拉伸应变下的机械稳定性的研究.
主要成果:
- 证明了具有良好的重复性和负差异阻力 (NDR) 的非挥发性双极电阻切换.
- 实现了低功耗 (0.28/3.43mW为第1次/100次循环) 和优异的保留 (>10^4秒).
- 在100个以上的曲和拉伸应变周期下证实了稳定的内存特性,在曲下NDR的功耗显著降低 (19微瓦).
结论:
- 灵活的Cu/BFO/PMMA/ITO设备具有强大而可靠的电阻切换内存特性.
- 该设备的机械灵活性和低功耗使其适合集成到混合有机/无机内存结构中.
- 焦尔加热,索雷特和菲克的力被确定为离子线索形成和破裂的关键因素,使切换行为成为可能.
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