基于Au纳米颗粒的界面修饰的屏障极性逆转,用于非易失性多层记忆和光电子突触
Jie Tang1, YuanQiang Xiong1, LiYu Ye1
1Chongqing Key Laboratory of Photo-Electric Functional Materials and Laser Technology, College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing 401331, China.
ACS applied materials & interfaces
|September 23, 2024
概括
这项研究介绍了一种新的非挥发性光电子记忆装置,使用金纳米粒子来改善舒特基屏障调制. 该设备为先进的视觉神经形态计算应用提供稳定的多层数据存储.
科学领域:
- 材料科学与工程 材料科学与工程
- 神经形态计算是一种神经形态计算.
- 光电学是指光电子产品.
背景情况:
- 光电子突触器件对于视觉神经形态计算至关重要,但由于短暂的响应,它们患有不稳定的内存和有限的电流范围.
- 现有的设备在神经网络的实际应用中面临挑战,因为内存保留能力差,操作参数有限.
研究的目的:
- 开发一种非易失性光电子记忆装置,克服短暂响应的局限性,增强记忆保留能力.
- 设计一种能够稳定多层次数据存储和模拟视觉计算的突触功能的设备.
主要方法:
- 一种新型设备结构的制造:氧化 (ITO) /Au纳米粒子 (NP) /无形Ga (a-Ga) /Pt.
- 纳入Au NP来增强Schottky屏障的高度,并作为光场调制的电荷捕获层.
- 调查设备的非挥发性屏障极性控制机制及其性能指标.
主要成果:
- Au NP的修改显著增强了肖特基屏障,使灵敏的,大规模的光调节.
- 实现了非易失性多层数据存储,具有超大开/关比 (∼104) 和超过12,000秒的保留时间.
- 证明了基本突触功能的模拟,表明信号感知和图像记忆的弱势.
结论:
- 开发的光电子记忆装置为高性能集成设备和光电子突触元件提供了一个有前途的战略.
- 这项研究提出了一种用于控制Schottky屏障极性的新机制,这对于高级神经形态系统至关重要.
- 这项工作为更强大,更有效的视觉神经形态计算应用铺平了道路.
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