AI 中文总结
该研究将μLED阵列与IGZO基ORRAM结合，实现并行空间光子编程，验证了其光电编程功能及渐逝记忆特性，为光学域神经形态技术应用提供支撑。
AI 中文摘要
光电阻变随机存取存储元件（ORRAM）是关键的新兴器件，它利用光子技术将光学编程的优势引入传统电子忆阻平台，用于神经形态计算和人工智能领域。本研究将自由空间光学微LED（μLED）阵列与基于IGZO富层/IGZO活性层的两端口氧化物半导体ORRAM相结合，实现无形状忆阻阵列的并行空间编程。我们报告了电阻态的光学和电气编程，以及对各种刺激参数（脉冲频率、脉冲宽度、脉冲幅度）的增强/抑制分析。此外，我们演示了ORRAM的同时光子-电气编程，其具有光学SET（450 nm蓝光）和电气RESET功能。还观察到持续光电流，并将其用作实现 fading memory（ fading memory 可译为“渐逝记忆”）或用于时间位编码的突触可塑性的途径。最后，演示了并行光学μLED到ORRAM通道，以实现多个器件的同时光子编程，以及在忆阻IGZO器件芯片上写入空间图案。本研究强调了该光电平台的光赋能可扩展性，以及ORRAM与空间复用光源接口的可行性，为直接应用于光学域处理和感知的神经形态技术提供支持。
英文摘要
Optoelectronic resistive random-access memory elements (ORRAM) are critical emerging devices that leverage photonic technologies to bring the advantages of optical programming to traditionally electronic memristive platforms for neuromorphic computing and artificial intelligence. In this work, a free-space optic micro-LED ($μ$LED) array is combined with a 2-terminal oxide semiconductor ORRAM (based on IGZO\textsubscript{Rich}/IGZO active layers), to realise parallel spatial programming of form-free memristive arrays. We report the optical and electrical programming of resistive states with potentiation/depression analysis of various stimuli parameters (pulse frequency, pulse width, pulse amplitude). Further, we demonstrate the simultaneous photonic-electronic programming of the ORRAM with optical SET (blue 450\,nm) and electrical RESET functionality. Persistent photocurrent is also observed and exploited as a pathway to fading memory or synaptic plasticity for temporal bit encoding. Finally, parallel optical $μ$LED to ORRAM channels are demonstrated to achieve the simultaneous photonic programming of multiple devices and the writing of spatial patterns across a chip of memristive IGZO devices. This work highlights the light-enabled scalability of the optoelectronic platform and the feasibility of ORRAM to interface with spatially-multiplexed optical sources to bring neuromorphic technologies directly into applications that process and sense in the optical domain.
Comments14 pages, 8 figures
