单个 MoO3 纳米结构的介电常数

IF 9.1 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2025-01-12 DOI:10.1021/acs.nanolett.4c05248

Minji Gu, Taewoong Kim, Dongjae Lee, Jiyu Park, Taekyeong Kim

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引用次数: 0

摘要

由于具有高介电常数（κ）和在电子和光电应用中的多功能性，MoO3 是一种很有前途的过渡金属氧化物。通过 MoS2 的氧化扫描探针光刻（o-SPL）合成的氧化诱导纳米级 MoO3 需要对其介电性质进行深入表征。在本研究中，我们测量了单个 MoO3 纳米结构的 κ，并通过水溶性测试和高分辨率透射电子显微镜 (HRTEM) 确认其为非晶相。利用静电力显微镜（EFM）和数值计算，我们确定了约 25 的高 κ 值，比 SiO2 高近六倍。此外，纳米级 κ 成像显示，MoO3 纳米结构的 κ 与它们的尺寸无关。这些发现表明，氧化诱导的 MoO3 纳米结构有望成为未来纳米级器件的高κ介电材料。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Dielectric Constant of a Single MoO3 Nanostructure

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Dielectric Constant of a Single MoO3 Nanostructure

MoO₃ is a promising transition metal oxide due to its high dielectric constant (κ) and multifunctionality in electronic and optoelectronic applications. Oxidation-induced nanoscale MoO₃, synthesized via oxidation scanning probe lithography (o-SPL) of MoS₂, requires in-depth characterization of its dielectric properties. In this study, we measured the κ of a single MoO₃ nanostructure, which was confirmed to be in the amorphous phase through water solubility tests and high-resolution transmission electron microscopy (HRTEM). Using electrostatic force microscopy (EFM) and numerical calculations, we determined a high κ value of approximately 25, nearly six times higher than that of SiO₂. Additionally, nanoscale κ imaging revealed that the κ of MoO₃ nanostructures is independent of their size. These findings suggest that oxidation-induced MoO₃ nanostructures are promising candidates as high-κ dielectric materials for future nanoscale devices.

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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.