Question

The current that exists in the circuit of a photodiode even when no visible light is made incident on it is called _______.

Answer 1

In order to the given question, to know the exact term for the given statement of the question, we will explain that term, which is a type of current. We will discuss how the current exists in the circuit of a photodiode even when no visible light is made incident on it.

Complete answer:
Dark Current is the current that exists in the circuit of a photodiode even when no visible light is made incident on it. In physics and electronic engineering, dark current is the relatively small electric current that flows through photosensitive devices such as a photomultiplier tube, photodiode, or charge-coupled device even when no photons reach the device; it is made up of the charges produced in the finder when no external radiation reaches the detector. "Opposite predisposition" is the term for it.

Explicit crystallographic defects within the consumption district are used to determine the charge generation rate. The tops in the obscurity current histogram's progression with temperature can be used to determine the imperfections present using dim current spectroscopy.

Note: Since dark current noise follows Poisson statistics, the rms dark current noise is the square root of the dark current or, in this case, $2{\text{ }}{e^ - }/p$ . Quadrature is added by noise sources in CCD cameras (the square root of the sum of the squares). Read noise and dark current noise are important noise sources in the low-light regime.