在柔性基板上的超低切换电流密度多层相变存储器
Asir Intisar Khan1, Alwin Daus1, Raisul Islam1
1Department of Electrical Engineering, Stanford University, Stanford, CA 94305, USA.
概括
灵活的超晶格相变存储器 (PCM) 实现了显著较低的切换电流密度,使灵活的电子设备能够存储低功耗的数据. 这些进步在曲和循环过程中保持性能.
科学领域:
- 材料科学
- 电气工程
- 纳米技术
背景情况:
- 变相存储 (PCM) 是数据存储的一个关键技术.
- 高开关电流和功率要求限制了PCM在柔性电子中的使用.
- 现有的灵活PCM设备与基于的同类产品相比,存在一些缺点.
研究的目的:
- 开发具有降低开关电流密度的灵活相变内存.
- 研究超级晶格结构在低功耗内存应用中的潜力.
- 在机械应力下评估柔性PCM的性能和可靠性.
主要方法:
- 灵活的超级晶格相变存储器的制造.
- 使用专用设备进行切换电流密度的描述.
- 设备性能评估,包括多层操作和阻力漂移.
- 在重复曲和循环条件下测试装置的可靠性.
主要成果:
- 实现了大约0.1MA/cm2的开关电流密度,比传统PCM低一到两倍.
- 在超级网格结构和孔状装置内证明有效的热和电流封闭.
- 观察到稳定的多层操作与最小的阻力漂移.
- 经过大量曲和循环后,确认保持低开关电流和良好的开/关比.
结论:
- 灵活的超级晶格PCM为灵活的电子应用提供了超低功耗的内存解决方案.
- 开发的设备架构和材料可显著提高能源效率.
- 这些发现为优化PCM在柔性基板和基板上的性能提供了宝贵的见解.
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