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通过二维增强的热载体注入实现的亚纳秒闪存
Yutong Xiang1, Chong Wang1, Chunsen Liu2
1State Key Laboratory of Integrated Chips and Systems, College of Integrated Circuits and Micro-Nano Electronics, Frontier Institute of Chip and System, Zhangjiang Fudan International Innovation Center, Fudan University, Shanghai, China.
Nature
|April 16, 2025
概括
研究人员开发了一种新的二维石墨烯通道闪存. 这种先进的非易失性存储器实现了在一纳秒以下的程序速度, 超过了传统的闪存, 并匹配了易失性静态随机存储速度.
科学领域:
- 材料科学
- 电气工程
- 半导体物理
背景情况:
- 非易失性内存技术,特别是闪存,在编程速度方面面临限制,阻碍了高性能计算和数据存储的进步.
- 现有的非易失性闪存难以满足亚纳秒编程速度要求,这是易失性静态随机访问存储器所达到的基准.
- 新兴的存储技术正在探索新材料和物理,以克服当前非易失性存储解决方案固有的速度瓶.
研究的目的:
- 开发一种非易失性存储器, 能够实现低于一纳秒的程序速度.
- 通过使用二维增强的热载体注入机制,研究二维 (2D) 迪拉克石墨烯通道闪存.
- 证明先进的二维材料可以使非易失性存储器超过高速易失性存储器.
主要方法:
- 制造一个二维的迪拉克石墨烯通道闪存设备.
- 实施一个二维增强的热载体注入机制进行编程.
- 编程速度,非易失性存储能力和耐久周期的特征.
- 在薄体通道中的电场分布和注入电流的分析.
- 在二维化物中进行热孔注入的研究.
主要成果:
- 开发的迪拉克通道闪存实现了400比秒的编程速度.
- 该设备显示强大的非挥发性存储和耐久性超过5.5 × 10^6周期.
- 优化薄体通道改善了水平电场 (Ey) 的分布,提高了程序的效率.
- 输入电流达到60.4 pA 微米-1 在VDS = 3.7 V.
- 两维化物表现出明显的二维增强热孔注入行为.
结论:
- 这种新型的二维迪拉克石墨烯通道闪存成功地克服了传统非易失性存储器的速度限制.
- 该设备实现了小于纳秒的编程速度,与挥发性静态随机存储器的性能相匹配.
- 这项工作突显了二维材料和先进的热载体注入机制为下一代高速非易失性内存的潜力.
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