Enhanced Electromagnetic Shielding Via Sequential Exfoliation of NbSe2 Thin Film: Structural and Electrical Optimization

IF 2.6 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Electronic Materials Letters Pub Date : 2025-07-10 DOI:10.1007/s13391-025-00585-5

Won-Jin Kim, Kun-Woo Nam, Sung-Hoon Park

{"title":"Enhanced Electromagnetic Shielding Via Sequential Exfoliation of NbSe2 Thin Film: Structural and Electrical Optimization","authors":"Won-Jin Kim, Kun-Woo Nam, Sung-Hoon Park","doi":"10.1007/s13391-025-00585-5","DOIUrl":null,"url":null,"abstract":"<div><p>This study investigates the impact of sequential exfoliation on the structural, electrical, and electromagnetic interference (EMI) shielding properties of NbSe<sub>2</sub> thin films. Sequential exfoliation yields two distinct films: the 1st, derived from the initial exfoliation, and the 2nd, obtained from further exfoliation of the residual material. Comparative analysis reveals that the 2nd film significantly enhanced total shielding effectiveness in the 8.2–12.4 GHz range, primarily due to its superior absorption shielding effectiveness. This enhancement is attributed to forming a highly uniform, laminated two-dimensional structure, which optimizes electrical conductivity and promotes effective electromagnetic wave dissipation through the skin effect. In contrast, the 1st film contains structural defects and residual oxides, which disrupt conductive pathways and reduce overall shielding efficiency. The denser morphology of the 2nd film facilitates repeated internal reflections, leading to greater energy absorption, whereas the irregular structure of the 1st film limits absorption efficiency.</p></div>","PeriodicalId":536,"journal":{"name":"Electronic Materials Letters","volume":"21 5","pages":"707 - 714"},"PeriodicalIF":2.6000,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Electronic Materials Letters","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s13391-025-00585-5","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

This study investigates the impact of sequential exfoliation on the structural, electrical, and electromagnetic interference (EMI) shielding properties of NbSe₂ thin films. Sequential exfoliation yields two distinct films: the 1st, derived from the initial exfoliation, and the 2nd, obtained from further exfoliation of the residual material. Comparative analysis reveals that the 2nd film significantly enhanced total shielding effectiveness in the 8.2–12.4 GHz range, primarily due to its superior absorption shielding effectiveness. This enhancement is attributed to forming a highly uniform, laminated two-dimensional structure, which optimizes electrical conductivity and promotes effective electromagnetic wave dissipation through the skin effect. In contrast, the 1st film contains structural defects and residual oxides, which disrupt conductive pathways and reduce overall shielding efficiency. The denser morphology of the 2nd film facilitates repeated internal reflections, leading to greater energy absorption, whereas the irregular structure of the 1st film limits absorption efficiency.

查看原文本刊更多论文

通过连续剥离NbSe2薄膜增强电磁屏蔽：结构和电学优化

本研究探讨了顺序剥离对NbSe2薄膜结构、电和电磁干扰（EMI）屏蔽性能的影响。顺序剥落产生两种不同的薄膜：第一种是由最初的剥落产生的，第二种是由残留物质的进一步剥落产生的。对比分析表明，第二层膜在8.2-12.4 GHz范围内的总屏蔽效率显著提高，这主要是由于其优越的吸收屏蔽效率。这种增强是由于形成了高度均匀的层压二维结构，从而优化了导电性，并通过趋肤效应促进了有效的电磁波耗散。相比之下，第一层薄膜含有结构缺陷和残余氧化物，这些缺陷破坏了导电途径，降低了整体屏蔽效率。第二层膜的致密形态有利于重复的内部反射，从而导致更大的能量吸收，而第一层膜的不规则结构限制了吸收效率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Electronic Materials Letters 工程技术-材料科学：综合

CiteScore

4.70

自引率

20.80%

发文量

审稿时长

2.3 months

期刊介绍： Electronic Materials Letters is an official journal of the Korean Institute of Metals and Materials. It is a peer-reviewed international journal publishing print and online version. It covers all disciplines of research and technology in electronic materials. Emphasis is placed on science, engineering and applications of advanced materials, including electronic, magnetic, optical, organic, electrochemical, mechanical, and nanoscale materials. The aspects of synthesis and processing include thin films, nanostructures, self assembly, and bulk, all related to thermodynamics, kinetics and/or modeling.