Self-powered 2D molybdenum disulfide semiconductor photodetector achieves 20X sensitivity boost for smartphones and electronic devices

https://techxplore.com/news/2025-08-powered-photodetector-sensitivity-boost-device.html

"silicon semiconductors have low light responsivity, and 2D semiconductor MoS₂ too thin for doping, overcome using: van der Waals bottom electrode making semiconductors extremely sensitive to electrical signals without doping, partial gate structure applying electrical signal only to part of 2D semiconductor, controlling 1 side to behave like p-type and other like n-type... operates without electricity in environments with light source... wearables, biosignal monitoring, IoT, autonomous vehicles, robots"