近日，中国科学院苏州纳米所康黎星团队研究了准一维砷烯的晶片尺度合成。这一研究成果于2025年11月20日发表在《美国化学会志》上。

随着维度降低，砷烯的结构与性质会发生显著变化。与此同时，材料合成与大面积组装是开展物理性质研究和器件应用的前提。

研究组成功在半导体性单壁碳纳米管内合成出一维砷烯（As@s-SWCNTs），并制备出晶圆级定向排列薄膜。通过像差校正扫描透射电子显微镜（AC-STEM）观察到单壁碳管内一维砷烯的高效填充。紫外-可见-近红外（UV-vis-NIR）吸收光谱验证了As@s-SWCNTs的有效分离，这源于封装物质与碳纳米管间的电荷转移。拉曼光谱与X射线光电子能谱（XPS）进一步阐释了这种电荷转移现象。随后，研究组采用限域自组装（DLSA）技术制备定向排列薄膜，并评估其场效应晶体管性能。与随机排列薄膜相比，开态电流提升近20倍。该工作为一维半导体材料的合成与组装提供了新思路。

附：英文原文

Title: Wafer-Scale Synthesis of Aligned One-Dimensional Arsenene

Author: Xu Zhang, Hongze Ji, Lin Geng, Yu Teng, Pin Zhao, Yanyan Zhao, Haoyan Liang, Min Yu, Shuai Liu, Ziqi Wang, Yunfei Li, Hong Gu, Lin Wang, Song Qiu, Lixing Kang

Issue&Volume: November 20, 2025

Abstract: As the dimensionality decreases, the structure and properties of arsenene undergo significant changes. Meanwhile, the synthesis of materials and large-area assembly are prerequisites for physical property research and device applications. In this study, we successfully synthesized one-dimensional (1D) arsenene within semiconducting single-walled carbon nanotubes (As@s-SWCNTs) and prepared wafer-scale aligned thin films. Using aberration-corrected scanning transmission electron microscopy (AC-STEM), we observed the efficient filling of one-dimensional arsenene inside SWCNTs. UV–visible-near-infrared (UV–vis-NIR) absorption spectroscopy verified the effective separation of As@s-SWCNTs, which was due to charge transfer between the encapsulated substance and carbon nanotubes. Raman spectroscopy and X-ray photoelectron spectroscopy (XPS) further elucidated this charge transfer phenomenon. Subsequently, we employed the dimension-limited self-alignment (DLSA) technique to fabricate aligned thin films and assess their performance in field-effect transistors. Compared with randomly arranged films, the on-state current increased by nearly 20 times. This work provides new insights into the synthesis and assembly of 1D semiconductor materials.

DOI: 10.1021/jacs.5c10670

Source: https://pubs.acs.org/doi/abs/10.1021/jacs.5c10670