Photoinduced Deterministic Polarization Switching in CuInP2S6 for Multifunctional Optoelectronic Logic Gates

IF 9.1 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2025-02-24 DOI:10.1021/acs.nanolett.4c0577710.1021/acs.nanolett.4c05777

Junxi Yu*, Songjie Yang, Wenjie Ming, Yuan Zhang, Shiyao Xu, Boyuan Huang, Qingyuan Wang* and Jiangyu Li*,

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Abstract

Optoelectronic logic gates (OELGs) converting photonic inputs into electric output based on Boolean logic are promising for next-generation computations, and it is highly desirable to be able to control the current polarity by light for multifunctional devices. Here we report a new strategy for OELGs based on bipolar photoconduction intrinsic to ferroelectric materials, simplifying the device configuration considerably while enabling multiple logic operations. We demonstrate this concept in two-dimensional (2D) ferroelectric CuInP₂S₆ (CIPS), taking advantage of the fact that its polarization switching is intimately coupled with Cu cation migration, and thus can be deterministically driven by both above- and below-bandgap illumination via the photothermal effect. This in turn switches the polarity of the photocurrent arising from the bulk photovoltaic effect (BPVE), which is sensitive to the light intensity, enabling the execution of “OR”, “XOR”, and “NOT” logic operations in a single device with a simple sandwich structure.

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用于多功能光电逻辑门的CuInP2S6光致确定性极化开关

基于布尔逻辑将光子输入转换为电输出的光电逻辑门（OELGs）在下一代计算中很有前景，并且非常希望能够通过光来控制多功能器件的电流极性。在这里，我们报告了一种基于铁电材料固有的双极光导的oelg新策略，大大简化了器件配置，同时实现了多种逻辑运算。我们在二维（2D）铁电CuInP2S6 （CIPS）中证明了这一概念，利用其极化开关与Cu阳离子迁移密切耦合的事实，因此可以通过光热效应由带隙上下照明确定地驱动。这反过来切换由体光伏效应（BPVE）产生的光电流的极性，该效应对光强敏感，使“或”，“异或”和“非”逻辑运算能够在一个简单的三明治结构的单个器件中执行。

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.