物理化学学报 >> 2026, Vol. 42 >> Issue (7): 100289.doi: 10.1016/j.actphy.2026.100289

论文 上一篇    下一篇

掺杂调控的肖特基界面用于内建电场增强电磁波吸收

刘天增1, 兰笛2, 张世杰1,*(), 王培1, 张淑慧1, 赵小苗1,*(), 梁笑微1, 赵志伟1,*()   

  1. 1 河南工业大学材料科学与工程学院, 河南 郑州 450001
    2 湖北汽车工业学院汽车材料学院, 湖北 十堰 442002
  • 收稿日期:2026-02-16 修回日期:2026-03-18 录用日期:2026-03-18 发布日期:2026-05-22
  • 通讯作者: Email: shijie_zhang@haut.edu.cn/zsj562389@sina.com (张世杰)zhaoxiaomiao88@163.com (赵小苗)zzw3217@163.com (赵志伟)

Doping-regulated schottky interfaces for built-in electric field enhanced electromagnetic wave absorption

Tianzeng Liu1, Di Lan2, Shijie Zhang1,*(), Pei Wang1, Shuhui Zhang1, Xiaomiao Zhao1,*(), Xiaowei Liang1, Zhiwei Zhao1,*()   

  1. 1 School of Material Science and Engineering, Henan University of Technology, Zhengzhou 450001, Henan Province, China
    2 School of Automotive Materials, Hubei University of Automotive Technology, Shiyan 442002, Hubei Province, China
  • Received:2026-02-16 Revised:2026-03-18 Accepted:2026-03-18 Published:2026-05-22
  • Contact: Email: shijie_zhang@haut.edu.cn/zsj562389@sina.com (Shijie Zhang)zhaoxiaomiao88@163.com (Xiaomiao Zhao)zzw3217@163.com (Zhiwei Zhao)

RichHTML

30

PDF

269

赞

补充材料

1

摘要：

近年来，杂原子掺杂与内建电场(BIEF)的引入已成为增强电磁波(EW)吸收的关键策略。BIEF促进材料界面处离散电荷的重新分布，诱导空间电荷极化；而杂原子掺杂则进一步调节电子迁移率并引入内部缺陷。这些效应协同作用，显著提升了材料的电磁波吸收性能。本研究通过烧结与简易水热反应的组合工艺，在碳纤维(CF)表面沉积MoS2，构建出稳定的莫特-肖特基异质结。随后制备三种变体样品以探究杂原素掺杂与BIEF效应：MoS2包覆CF (CM)、N-MoS2包覆CF (CNM)及N-MoS2包覆P-CF (PCNM)。系统考察了杂原子掺杂对具有内部电场材料的吸收特性影响，以及N-MoS2含量对电场吸收性能的影响。值得注意的是，PCNM-1样品展现出卓越的电场吸收性能，这可归因于杂原子掺杂与BIEF之间的协同作用，结合了优化的材料组成。具体而言，PCNM-1在17.52 GHz频率下以1.2 mm厚度实现−45.76 dB的反射损耗(RL)优化值，同时具备4.0 GHz的有效吸收带宽(EAB)。雷达截面积(RCS)模拟进一步证实了其卓越性能。

关键词: 内建电场, 杂原子掺杂, 设计策略, 组分, 复合策略

Abstract:

In recent years, heteroatom doping and the introduction of built-in electric fields (BIEF) have emerged as key strategies for enhancing electromagnetic wave (EW) absorption. BIEF facilitates the redistribution of discrete charges at material interfaces, inducing spatial charge polarization, while heteroatom doping further modulates electron mobility and introduces internal defects. Together, these effects synergistically enhance the material's EW absorption properties. In this study, a stable Mott-Schottky heterojunction was constructed by coating MoS2 onto the surface of carbon fiber (CF) via a combination of sintering and a simple hydrothermal reaction. Three variations were subsequently prepared to investigate the effects of heteroatom doping and BIEF: MoS2-coated CF (CM), N-MoS2-coated CF (CNM), and N-MoS2-coated P-CF (PCNM). The influence of heteroatom doping on the absorption properties of materials with an internal electric field, as well as the effect of N-MoS2 content on EW absorption performance, was systematically examined. Notably, the PCNM-1 sample exhibited exceptional EW absorption performance, which can be attributed to the synergistic interaction between heteroatom doping and BIEF, combined with the optimized material composition. Specifically, PCNM-1 achieved an optimal reflection loss (RL) of −45.76 dB at 17.52 GHz with a thickness of 1.2 mm, alongside an effective absorption bandwidth (EAB) of 4.0 GHz. Radar cross-section (RCS) simulations further demonstrated its remarkable EW stealth capability. Overall, this study provides valuable insights into the rational design of advanced EW absorbers by leveraging the synergistic effects of heteroatom doping and BIEFs, offering a promising approach for developing high-performance, compositionally tunable EW absorption materials.

Key words: Built-in Electric Field, Heteroatom doping, Design strategies, Component, Composite strategy