J. Mater. Sci. Technol. ›› 2026, Vol. 243: 256-264.DOI: 10.1016/j.jmst.2025.03.096

• Research article • Previous Articles     Next Articles

Efficient electrical properties modulation of wafer-scale top gated MoS2 transistors via non-destructive annealing

Jinshu Zhanga,1, Yuxuan Zhua,1, Xiangqi Donga,1, Zhejia Zhanga, Saifei Goua, Xinliu Hea, Haojie Chena, Mingrui Aoa, Jiahao Wanga, Sen Wanga, Yan Hua, Qicheng Suna, Xinyu Wanga, Yuchen Tiana, Jieya Shanga, Yufei Songa, Xiaofei Yueb, Chunxiao Congb, Lihui Zhouc, Sheng Daic, Zihan Xud, Jing Wanb, Haibing Qiue, Xiaojun Tanf,*, Yi Wanga,f,*, Wenzhong Baoa,f,*   

  1. aSchool of Microelectronics, Fudan University, Shanghai 200433, China;
    bSchool of Information Science and Technology, Fudan University, Shanghai 200433, China;
    cKey Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China;
    dShenzhen Six carbon Technology, Shenzhen 518055, China;
    eSchool of Semiconductor and Physics, North University of China, Taiyuan 030051, China;
    fShaoxin Laboratory, Shaoxing 312000, China
  • Received:2024-12-16 Revised:2025-02-28 Accepted:2025-03-25 Published:2026-02-01 Online:2025-05-22
  • Contact: *E-mail addresses: 20112020031@fudan.edu.cn (X. Tan), ywang16@gzu.edu.cn (Y. Wang), baowz@fudan.edu.cn (W. Bao).
  • About author:1These authors contributed equally to this work.

Abstract: Two-dimensional (2D) semiconductors have been widely investigated for next-generation electronic devices due to their advantages, such as the absence of dangling bonds, single-atomic-layer thickness, and tunable energy bands. The large-scale applications of 2D semiconductors in integrated circuits are contingent upon the homogeneity of the electrical properties in devices. However, the efficient and moderate modulation methods developed for top gated field-effect transistors (TG-FETs) based on 2D materials remain a major challenge. In this work, the electrical properties of TG-FETs made of monolayer MoS2 were investigated under non-destructive annealing conditions in oxygen (O2) and hydrogen-argon (H2-Ar) atmosphere. The results show that the threshold voltage of the TG-FETs can be effectively adjusted by different atmospheres, with O2 annealing that shifts it positively while H2-Ar that shifts it negatively, and in particular, O2 annealing at 150 °C significantly repairs the defects in the dielectric layer and reduces the hysteresis. Furthermore, both O2 and H2-Ar annealing can regulate the switching threshold voltage of the inverters, providing a new method for optimizing multilevel logic circuits. This work represents a significant advancement in the non-destructive modulation of electrical properties, which can facilitate the large-scale applications of 2D semiconductors in integrated circuits.

Key words: Two-dimensional (2D) semiconductors, Electrical properties modulation, Non-destructive annealing, Wafer-scale, Top-gate