Memristive Behavior in Carrier Accumulation-Based Optical Modulators.

IF 9.1 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2025-09-29 DOI:10.1021/acs.nanolett.5c03443

Alexander Korneluk, Katarzyna Brańko, Tomasz Stefaniuk

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Abstract

Memristive switching and field-effect modulation form the basis of many optoelectronic devices, yet despite their complementary properties, they are typically realized in separate architectures. Here, we demonstrate an optoelectronic platform that combines carrier accumulation/depletion (CAL/CDL) and electrochemical metallization (ECM) effects within a single device. By engineering a Ag/ITO/SiO₂/Ag stack and tuning the ITO carrier concentration, we achieve electrically driven transitions between volatile and nonvolatile optical states. Spectroscopic ellipsometry and electrical measurements, enhanced by well-defined optical resonances and a large active area, reveal that low-voltage modulation originates from field-induced carrier redistribution at the ITO/SiO₂ interface (CAL/CDL), while long-term optical drift and current evolution are attributed to ECM-mediated silver ion migration and filament formation. The coexistence and controllable interplay of both effects provide a pathway toward multifunctional optoelectronic components capable of operating across distinct memory and modulation modes, with implications for neuromorphic computing and hybrid photonic in-memory computing technologies.

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基于载波累加的光调制器的记忆行为。

忆阻开关和场效应调制构成了许多光电器件的基础，尽管它们具有互补的特性，但它们通常是在单独的架构中实现的。在这里，我们展示了一个光电平台，结合载流子积累/耗尽（CAL/CDL）和电化学金属化（ECM）效应在一个单一的设备。通过设计Ag/ITO/SiO2/Ag堆叠并调整ITO载流子浓度，我们实现了挥发性和非挥发性光态之间的电驱动转换。光谱椭偏和电学测量，通过明确的光学共振和大的有源面积，揭示了低电压调制源于ITO/SiO2界面（CAL/CDL）的场诱导载流子重分布，而长期的光漂移和电流演化归因于ecm介导的银离子迁移和灯丝形成。这两种效应的共存和可控相互作用为能够跨不同记忆和调制模式工作的多功能光电元件提供了一条途径，对神经形态计算和混合光子存储计算技术具有重要意义。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

期刊介绍： Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including: - Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale - Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies - Modeling and simulation of synthetic, assembly, and interaction processes - Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance - Applications of nanoscale materials in living and environmental systems Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.