Engineering and Technology

Chip-integrated van der Waals PN heterojunction photodetector with low dark current and high responsivity

R. Tian, X. Gan, et al.

Discover the groundbreaking advancements in photodetection with our van der Waals PN heterojunction device, integrating p-type black phosphorus and n-type molybdenum telluride on a silicon nitride waveguide. This innovative research, conducted by Ruijuan Tian and colleagues from Northwestern Polytechnical University, demonstrates dramatically reduced dark current and impressive responsivity, promising a new frontier in optical technologies.