• A photodiode is a PN-junction diode that consumes light energy and converts it into an electric energy(current).
• Also known as photo-detector, a light detector, and a photo-sensor.
• works in reverse bias mode
• Typical photodiode materials are Silicon, Germanium and Indium gallium arsenide.
• Photodiodes are used in logic circuits, solar cell panels, detection circuits, lighting regulation, optical communication etc.
• photodiode can be used as a light sensor.
• Ultraviolet light is the type of light that is needed to cause the photoelectric effect.
• Symbol of photodiode is as shown below.
