Photo Conductors
When photons are absorbed by a semiconductor material when light falls on the surface of the material it leads to the generation of mobile charged carriers (electron-hole pairs). There is a rise in the conductivity of the material in proportion to the amount of photon flux. An electric field due to an external voltage source causes the transportation of electrons and holes which results in a measurable electric current in the circuit.
This type of detector operates by registering either the current produced by the photons i.e., photocurrent ip, which is proportional to the photon flux, or the voltage drop across a resistance as a load that is connected in series with the external circuit.
Photodetector
A photo is nothing but light. A detector is nothing but a device that detects something. Therefore, we can directly conclude that a photodetector can be defined as a device that is used to detect light radiations by absorption. In this Article, We will be going through Photodetector, We will start our Article with What is Photodetector?, Then we will go through its brief Working, then we will go through its properties and go through all the types, At last, we will conclude our Article with Advantages, Disadvantages and Some FAQs.
Table of Content
- What is PhotoDetectors ?
- Working of PhotoDetector
- Classes of PhotoDetector
- Photodetector Properties
- Types of PhotoDetector
- Comparison Between Photodetector and Photodiode
- Applications of Photodetector