Photodetector

[1] There are a wide variety of photodetectors which may be classified by mechanism of detection, such as photoelectric or photochemical effects, or by various performance metrics, such as spectral response.

Each type has its own characteristics, advantages, and applications in various fields, including imaging, communication, sensing, and scientific research.

There are a number of performance metrics, also called figures of merit, by which photodetectors are characterized and compared[2][3] Grouped by mechanism, photodetectors include the following devices: A graphene/n-type silicon heterojunction has been demonstrated to exhibit strong rectifying behavior and high photoresponsivity.

Si QDs cause an increase of the built-in potential of the graphene/Si Schottky junction while reducing the optical reflection of the photodetector.

Both the electrical and optical contributions of Si QDs enable a superior performance of the photodetector.