Salt-assisted promotion of large dimensional growth of Bi2O2Se

IF 3.8 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Vacuum Pub Date : 2025-05-21 DOI:10.1016/j.vacuum.2025.114426

Pingfan Ning , Xiangyu Li , Feifei Lan , Xuerong Li , Yingmin Wang , Hongjuan Cheng , Yujian Wang

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引用次数: 0

Abstract

Bi₂O₂Se exhibits broader application prospects compared to other two-dimensional materials due to its high electron mobility, optimal band gap and good environmental stability. In this paper, large-area high-quality 2D Bi₂O₂Se single-crystal nanosheets were synthesized via a NaCl-assisted chemical vapor deposition (CVD) approach. It was found that the addition of a modest amount of NaCl effectively promoted the transverse growth of 2D Bi₂O₂Se, resulting in larger dimensions. At the same time, the effects of varying NaCl concentrations on the growth of 2D Bi₂O₂Se were investigated, elucidating the underlying growth mechanisms. Additionally, various halogen salt-assisted growth experiments were conducted to explore the differential effects of distinct halogen salts on the process. The results indicate that the salt-assisted method significantly enhances the growth process, offering novel insights for the large-scale synthesis of 2D Bi₂O₂Se.

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盐辅助促进Bi2O2Se的大尺寸生长

与其他二维材料相比，Bi2O2Se具有较高的电子迁移率、最佳的带隙和良好的环境稳定性，具有更广阔的应用前景。本文采用nacl辅助化学气相沉积（CVD）法制备了大面积高质量的二维Bi2O2Se单晶纳米片。结果表明，适量NaCl的加入能有效促进二维Bi2O2Se的横向生长，使其尺寸增大。同时，研究了不同NaCl浓度对二维Bi2O2Se生长的影响，阐明了其生长机制。此外，还进行了各种卤素盐辅助生长实验，以探索不同卤素盐对该过程的不同影响。结果表明，盐辅助方法显著提高了生长过程，为大规模合成二维Bi2O2Se提供了新的见解。

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

Vacuum 工程技术-材料科学：综合

CiteScore

6.80

自引率

17.50%

发文量

审稿时长

34 days

期刊介绍： Vacuum is an international rapid publications journal with a focus on short communication. All papers are peer-reviewed, with the review process for short communication geared towards very fast turnaround times. The journal also published full research papers, thematic issues and selected papers from leading conferences. A report in Vacuum should represent a major advance in an area that involves a controlled environment at pressures of one atmosphere or below. The scope of the journal includes: 1. Vacuum; original developments in vacuum pumping and instrumentation, vacuum measurement, vacuum gas dynamics, gas-surface interactions, surface treatment for UHV applications and low outgassing, vacuum melting, sintering, and vacuum metrology. Technology and solutions for large-scale facilities (e.g., particle accelerators and fusion devices). New instrumentation ( e.g., detectors and electron microscopes). 2. Plasma science; advances in PVD, CVD, plasma-assisted CVD, ion sources, deposition processes and analysis. 3. Surface science; surface engineering, surface chemistry, surface analysis, crystal growth, ion-surface interactions and etching, nanometer-scale processing, surface modification. 4. Materials science; novel functional or structural materials. Metals, ceramics, and polymers. Experiments, simulations, and modelling for understanding structure-property relationships. Thin films and coatings. Nanostructures and ion implantation.