Photo Diode Characteristics Apparatus self-contained unit is designed for detailed investigations into how photodiodes respond to light. Precise voltage & current measurements are made easy with integrated digital meters, while regulated dials allow for accurate control of experimental parameters. A simple on/off switch ensures straightforward operation. Main Unit of Instrument housed in a robust metal cabinet for durability, this apparatus is ideal for physics demonstrations, electronics labs, and anyone exploring optoelectronic components. Gain a practical understanding of photodiode characteristics and their applications in light detection and measurement with this reliable and user-friendly apparatus. photodiode is enclosed in a box and light source with intensity control knob, terminals are provided on front panel to make connection externally with the help of connecting leads. Complete in all respects.

 

Experimental Objective

To study the V-I characteristics of a photodiode under different light intensities

 

Theory

A photodiode is a semiconductor device that converts light energy into electrical current. It is designed to operate in reverse bias and exhibits properties that make it suitable for light detection applications.

 

Working Principle

Photodiodes operate based on the photoelectric effect, where photons with energy greater than or equal to the band gap of the semiconductor material generate electron-hole pairs when they strike the device. These carriers are then separated by the built-in electric field in the depletion region, creating a photocurrent.