Scientists have recently developed a revolutionary photodetector device which produces ultra-broadband detection of light. This device, based on a bilayer structure of graphene and a topological insulator, is the first of its kind to take advantage of both graphene’s high speed and the topological insulator’s high responsivity. This combination of properties makes it the perfect tool for applications such as optical communication, imaging, and sensing. The device is able to detect light from the near infrared to the visible spectrum, across a range of frequencies, with amazing accuracy. This new technology promises to revolutionize how we interact with light, and will open up a whole new world of possibilities.

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source: Phys.org