Definition: A Schottky diode is a 2 terminal metal-semiconductor device that is formed by diffusing an n-type semiconductor over a metal. Both metal and n-type semiconductor have electrons as their majority carriers, as almost negligible holes are present in a metal. As in Schottky diode, only majority charge carrier i.e., electrons are responsible for conduction. …
Definition: LCD is an acronym used for Liquid Crystal Display. It is basically a display technique in which liquid crystals are used in order to produce an image on the screen. Unlike an LED, an LCD does not hold the property of producing light. However, it allows some regions to appear either bright or dark …
Definition: JFET is the shortened form for Junction Field Effect Transistor. It is a 3 terminal semiconductor device in which current conduction takes place only due to the flow of majority charge carriers. Thus, it is a unipolar transistor. The 3 terminals of the JFET are source, drain and gate. Unlike BJT, JFET is a …
Definition: A PNP transistor is an acronym used for a positive-negative-positive transistor. It a mainly a classification of bipolar junction transistor and is a three terminal device consisting of the emitter, base and collector. Here, majority charge carriers are holes and hence they are responsible for the flow of current through the device. In PNP …
Definition: Photovoltaic cells are basically those semiconductor devices that show sensitivity towards light. It has the ability to change radiation energy into equivalent electrical energy. The name of the device itself shows its operation. As the word photo is used for light and voltaic is used for electricity. Photovoltaic cells are also known as solar cells as …
Both p-type and n-type semiconductor is the classification of extrinsic semiconductors. The major factor that generates a difference between p-type and n-type semiconductor lies in their doping material. A p-type semiconductor material is formed by the addition of group III elements or we can say trivalent impurity to a pure (intrinsic) semiconductor. On the contrary, …
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Definition: Thyristor (SCR) is a semiconductor device that performs the action of switching as well as rectification. It is a 4 layer and 3 junction device formed by the combination of alternating p and n-type semiconductor material. Thyristor is a word formed by the merger of thyratron and transistor. As it exhibits the rectification action of …
Definition: A Phototransistor is a device that has the ability to detect the level of the incident radiation and accordingly change the flow of electric current between emitter and collector terminal. It is a 3-layer semiconductor device that consists of a light sensitive base region. It is basically a transistor whose action depends on the application …
Both NPN and PNP transistors are the two major classifications of Bipolar Junction Transistor (BJT). However, there exist several differences between the two. One of the major differences between NPN and PNP transistor is that in NPN transistors, electrons are the majority carriers, hence electrons are responsible for current flow. While, in PNP transistors, holes …
The crucial difference between conductor, semiconductor and insulator rely on their level of conductivity. Conductors are basically the materials that allow easy flow of electric current, hence exhibiting high conductivity, semiconductors are the materials that possess moderate conductivity. As against, insulators are the materials that prevent the flow of charge through them, thus exhibiting low …
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