Engineering Titanium Dioxide/Titanocene-Polysulfide Interface for Flexible, Optical-Modulated, and Thermal-Tolerant Multilevel Memristor

IF 9.6 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2025-02-07 DOI:10.1021/acs.nanolett.4c05786

Panke Zhou, Xi Lin, Yiqun Gao, Xiaoli Lin, Tao Zeng, Haohong Li, Xiong Chen, Huidong Zheng

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引用次数: 0

Abstract

Multifunctional memristors with a high memory density, low power consumption, flexibility, programmability, and environmental robustness are essential for next-generation memories. In this work, a titanocene-polysulfide complex (Cp₂TiS₅) with strong S···S interactions and hydrogen bonds was synthesized and integrated with TiO₂ to create a novel Cu/TiO₂/Cp₂TiS₅/Ag memristor. This device shows bipolar nonvolatile memory performance with a remarkable ON/OFF ratio (10^4.8), low switching voltages (V_SET, −0.16 V; V_RESET, +0.15 V), and low power consumption (2.7 × 10^–4 μW). It exhibits multilevel memory behavior, flexibility, optical modulation (V_SET decreases from −1.35 to −0.17 V with decreasing irradiation wavelength), and thermal tolerance (up to 200 °C). The electron-rich Cp₂TiS₅ layer protects the Ag-CFs, while TiO₂’s oxygen vacancies and unsaturated Ti atoms interact with sulfur from Cp₂TiS₅, lowering the Schottky barrier and facilitating charge transport. This work offers promising opportunities in flexible memristive devices for neuromorphic computing under extreme conditions.

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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.