Ion irradiation of reduced graphene oxide for near-infrared photodetector applications

IF 1.4 3区物理与天体物理 Q3 INSTRUMENTS & INSTRUMENTATION

Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms Pub Date : 2025-09-09 DOI:10.1016/j.nimb.2025.165858

Chetan Awasthi , Firoz Khan , R. Meena , Asokan Kandasami , S.S. Islam

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引用次数: 0

Abstract

Due to rapid technological advancements, NIR photodetectors are utilized in various domains, including tracking brain activity, heartbeats, night vision, deep tissue imaging, smart wearables, enabling fast internet, monitoring the planet from space, and other similar applications. In recent years, graphene and its derivatives, such as reduced graphene oxide (RGO), have been considered a good choice due to defect-state transitions and tunability. In this work, we report for the first time the photodetection efficiency in an optical sensor through ion beam exposure of pristine RGO films. Ion irradiation induces structural changes and tunes the photoresponse of the RGO films. Here, 100 MeV Ni-irradiated RGO films show the highest photoresponse with optimal fluences in the range 1 × 10¹¹ to 5 × 10¹¹ ions/cm². This work highlights the potential of ion irradiation as a versatile tool for modifying 2-D material properties, with significant implications for RGO-based photodetectors, optoelectronic devices, and sensors, and paves the way for future research in this field, enabling the development of high-performance devices.

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离子辐照还原氧化石墨烯在近红外光电探测器中的应用

由于技术的快速进步，近红外光电探测器被用于各种领域，包括跟踪大脑活动，心跳，夜视，深层组织成像，智能可穿戴设备，实现快速互联网，从太空监测地球以及其他类似应用。近年来，石墨烯及其衍生物，如还原氧化石墨烯（RGO），由于其缺陷态转变和可调性而被认为是一个很好的选择。在这项工作中，我们首次报道了通过离子束暴露原始RGO薄膜的光学传感器的光探测效率。离子辐照诱导RGO薄膜的结构变化并调节其光响应。在这里，100 MeV ni辐照的RGO薄膜表现出最高的光响应，最佳影响范围为1 × 1011至5 × 1011离子/cm2。这项工作强调了离子辐照作为一种改变二维材料特性的通用工具的潜力，对基于rgo的光电探测器、光电器件和传感器具有重要意义，并为该领域的未来研究铺平了道路，使高性能器件的开发成为可能。

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

Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms 物理-核科学技术

CiteScore

2.80

自引率

7.70%

发文量

231

审稿时长

1.9 months

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.