J. Mater. Sci. Technol. ›› 2026, Vol. 244: 129-141.DOI: 10.1016/j.jmst.2025.05.021

• Research Article • Previous Articles     Next Articles

Conductor-semiconductor heterointerface polarization enhancement for superior electromagnetic wave absorption

Yuelei Pana,b, Lei Chengc, Di Lana,*, Siyuan Zhangd, Mukun Hed, Guangrong Wue,*, Zhenguo Gaof, Zirui Jiab,*, Guanglei Wub,*   

  1. aSchool of Automotive Materials, Hubei University of Automotive Technology, Shiyan 442002, China;
    bCollege of Materials Science and Engineering, Qingdao University, Qingdao 266071, China;
    cAerospace Research Institute of Materials and Processing Technology, Beijing 100076, China;
    dSchool of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi’an 710072, China;
    eQingdao Hengxing University of Science and Technology, Qingdao 266100, China;
    fNanotechnology Center, School of Fashion and Textiles, The Hong Kong Polytechnic University, Hong Kong 999077, China
  • Received:2025-05-05 Revised:2025-05-22 Accepted:2025-05-23 Published:2026-02-10 Online:2025-06-02
  • Contact: *E-mail addresses: landi@mail.nwpu.edu.cn (D. Lan), guangrong0913@163.com (G. Wu), jiazirui@qdu.edu.cn (Z. Jia), wuguanglei@mail.xjtu.edu.cn , wuguanglei@qdu.edu.cn (G. Wu)

Abstract: The strategic engineering of conductor-semiconductor heterointerfaces has emerged as a pivotal approach for optimizing microwave attenuation performance. However, challenges persist in comprehensively understanding the synergistic mechanisms between conductor and semiconductor heterointerfaces. This study proposes a novel strategy to enhance polarization relaxation through deliberate heterointerface engineering. A heterostructured composite material consisting of WS2 nanosheet-encapsulated NiCo hollow spheres embedded in porous carbon fibers (WS2@NiCo-hc) was successfully fabricated via an integrated approach combining electrospinning, high-temperature annealing, and solvothermal synthesis. Experimental results demonstrate that the constructed semiconductor (WS2)-conductor (NiCo alloy) heterointerfaces play a pivotal role in synergistic polarization effects. Ultimately, the WS2@NiCo-hc composite exhibits exceptional electromagnetic wave absorption performance at 2.1 mm thickness, achieving a minimum RL of -64.5 dB with an EAB of 6.24 GHz. This work elucidates the structure-property correlation in heterointerface-mediated polarization dynamics, establishing a universal design principle for high-efficiency microwave absorbers via interfacial polarization engineering.

Key words: Conductor-semiconductor heterointerfaces, Interfacial polarization, Electromagnetic wave absorption