{"title":"Effect of 60 MeV nitrogen ion irradiation on few layer WSe2 nanosystems","authors":"Bhupali Deka , Dhanjit Talukdar , D. Mohanta","doi":"10.1016/j.nimb.2024.165438","DOIUrl":null,"url":null,"abstract":"<div><p>This study explores the impact of 60 MeV N<sup>5+</sup> ion irradiation on few layer WSe<sub>2</sub> systems. The structural analysis exhibit an anomalous variation in crystallite size with increasing grain growth after irradiation. Raman spectroscopy study reveals increased disorder, enhanced intensities of prominent modes, and an eight-fold rise in AFM-measured roughness from 27.2 nm to 212.6 nm. HR-TEM shows voids in nanosheets post-irradiation. In addition, DFT calculations on monolayer with vacancy clusters shows modification of WSe<sub>2</sub> bandgap from 1.48 eV to 0.37 eV. Interrelated structural, morphological and electronic structure calculations would provide useful insights upon controlled radiation exposure.</p></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":null,"pages":null},"PeriodicalIF":1.4000,"publicationDate":"2024-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0168583X24002088","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"INSTRUMENTS & INSTRUMENTATION","Score":null,"Total":0}
引用次数: 0
Abstract
This study explores the impact of 60 MeV N5+ ion irradiation on few layer WSe2 systems. The structural analysis exhibit an anomalous variation in crystallite size with increasing grain growth after irradiation. Raman spectroscopy study reveals increased disorder, enhanced intensities of prominent modes, and an eight-fold rise in AFM-measured roughness from 27.2 nm to 212.6 nm. HR-TEM shows voids in nanosheets post-irradiation. In addition, DFT calculations on monolayer with vacancy clusters shows modification of WSe2 bandgap from 1.48 eV to 0.37 eV. Interrelated structural, morphological and electronic structure calculations would provide useful insights upon controlled radiation exposure.
期刊介绍：
Section B of Nuclear Instruments and Methods in Physics Research covers all aspects of the interaction of energetic beams with atoms, molecules and aggregate forms of matter. This includes ion beam analysis and ion beam modification of materials as well as basic data of importance for these studies. Topics of general interest include: atomic collisions in solids, particle channelling, all aspects of collision cascades, the modification of materials by energetic beams, ion implantation, irradiation - induced changes in materials, the physics and chemistry of beam interactions and the analysis of materials by all forms of energetic radiation. Modification by ion, laser and electron beams for the study of electronic materials, metals, ceramics, insulators, polymers and other important and new materials systems are included. Related studies, such as the application of ion beam analysis to biological, archaeological and geological samples as well as applications to solve problems in planetary science are also welcome. Energetic beams of interest include atomic and molecular ions, neutrons, positrons and muons, plasmas directed at surfaces, electron and photon beams, including laser treated surfaces and studies of solids by photon radiation from rotating anodes, synchrotrons, etc. In addition, the interaction between various forms of radiation and radiation-induced deposition processes are relevant.
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