在芯片上直接合成化记忆器
Jing Xie1, Ali Ebadi Yekta2, Fahad Al Mamun1
1School of Electrical, Computer and Energy Engineering, Arizona State University, Tempe, AZ, USA.
Nature nanotechnology
|July 31, 2025
概括
研究人员开发了在低温下合成的CMOS兼容的六角化 (hBN) 记忆器. 这些设备显示出高产量,稳定性和精度,为先进的电子设备铺平了道路.
科学领域:
- 材料科学 材料科学 材料科学
- 电子工程 电子工程
- 纳米技术 纳米技术
背景情况:
- 二维材料对于神经形态和内存计算等先进电子技术至关重要.
- 六角化 (hBN) 提供了对memristors的卓越稳定性,但由于高合成温度或引发缺陷的传输方法,它面临着与CMOS的集成挑战.
研究的目的:
- 开发一种在CMOS兼容温度 (<380°C) 下合成hBN记忆器的方法.
- 实现具有高性能和可靠性的无转移,CMOS兼容的hBN记忆器.
- 在工业CMOS测试车辆上演示这些记忆元的晶圆尺度集成.
主要方法:
- 在低于380°C的温度下使用电子循环共振等离子增强化学蒸汽沉积 (ECR-PECVD) 合成hBN薄膜.
- 描述hBN薄膜结构,形态和晶圆层均性的特征.
- 制造和测试大量的hBN记忆器阵列,包括耐久性,保留性,可重复性和多状态操作分析.
- 在工业CMOS测试车辆上集成hBN记忆器.
主要成果:
- 实现了hBN薄膜的CMOS兼容的合成,具有多晶和层结构.
- 在hBN记忆器阵列中证明了高产率 (~90%) 和出色的稳定性 (耐久性,保留性,可重复性).
- 展示了多态运行 (> 16 个状态) 和低频噪声性能的编程精度.
- 通过集成到CMOS测试车辆上,经过验证的优异耐久性 (数百万次循环) 和高技术准备水平.
结论:
- 低温ECR-PECVD可以制造无转移,CMOS兼容的hBN记忆器.
- 这些hBN记忆器具有出色的电气特性,稳定性和均性,适合先进的电子应用.
- 这项工作代表了hBN基于memristor的电子产品在超越CMOS计算的晶圆规模集成方面取得的重大进展.
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