1. Research Background
Multifunctional sensors have extensive applications in health monitoring, environmental sensing, and intelligent electronics. Photocatalytic sensors and electrostatic field sensors have attracted attention due to their high sensitivity, especially in the detection of biological electrical signals (such as surface electromyography sEMG). However, traditional electrodes have problems such as weak signals and poor stability, which limit their practical applications. How to precisely control the microstructure and energy level matching of two-dimensional material-based heterojunction devices, and effectively combine the photonic and electrostatic coupling effects, has become a key challenge in current research on intelligent sensor applications.
2. New Research Highlights

This study proposes a hierarchical convergent defect engineering repair strategy, constructing a photovoltaic electrode structure of ZnO/Bi₂O₃/BiOCl/BP/MXene multi-dimensional heterojunction framework (Figure 1). By successively introducing two-dimensional BP and MXene, the nanoscale pore defects in the three-dimensional framework of BiOCl were precisely repaired, significantly increasing the contact area, energy level matching, and carrier transport path of the electrode, effectively improving the photonic and electrostatic coupling performance (Figure 2).

Original link:https://mp.weixin.qq.com/s/3hEauxs4Sm2Gm0n1Lky4dQ