PhotoTransistors
Phototransistor is Photodiode + transistor. It is a semiconductor device having three terminals. It also used to convert incident light into photocurrent. The incident light( or radiation) falls on the base terminal and after that, it is converted into photocurrent which flows through collector and emitter. The transistor is used with photodiode because the current produced by the photodiode is low, that is why transistor is used to amplify the current.
Structure of phototransistor is same as transistor as above. The light falls on the base terminal as shown by arrow in fig which after converts into current.
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
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