What are the PN Junction Diode characteristics?

1. What are the PN Junction Diode characteristics? A PN junction diode, as the name itself suggests, is an interface that acts as a boundary between two types, P and N, especially inside a semiconductor. This diode is created by a method called doping. This process is possible because the P diode has an excess number of holes, and the N diode has an excess number of electrons. Moreover, the region formed between the two diodes is also known as the depletion region, where both positive and negative charges are located on either side of the junctions. PN Junction Diode A semiconductor is a material with its conductivity lying between conductors and insulators. Semiconductors fall under the category of intrinsic and extrinsic semiconductors, where the latter are sub-segmented as N-type and P-type semiconductors. Where a junction is created between these two semiconductors, it is referred to as P-N Junction. A diode in this regard is a device that regulates the electric flow inside a circuit. In the reverse bias of the P-N Junction, the p-type is connected to the battery’s negative terminal, and the n-type is connected to its positive side. Here, the built- in electric field and the applied electric field are spotted in the same direction. As the two fields integrate, it results in the formation of an electric field that lies in the same direction as the built-in electric field. This creates a more resistive and far thicker region of depletion. This region becomes more resistive and thicker when the applied voltage gets larger. So, as you can guess from the above sections, in the reverse bias of the PN Junction, the p-type diode is directly connected to the negative terminal, whereas the n-type diode is linked to the positive terminal. Unlike the forwards bias system, in the case of reverse bias, both the built-in electric field, as well as the electric current is in the same direction, which in turn creates more resistance inside the semi-conductor. That will result in the increase of the depleted region in PN Junction diode. And along with the increase, the size of the depleted region will also increase.

2. In case of reverse bias, please make note of the following aspects for improved learning – battery-induced electric field and built-in electric field PN Junction Diode Characteristics The above picture will help you understand the characteristics of the PN junction diode, and how they vary along with the change in the current (I) and Voltage (V). Besides, in this graph, you can also observe the three bias regions in the graph above. Of the typical P-N Junction Diode characteristics, as one can see in the graph, in the forward base region, the increase in the current and voltage will result in a non-linear curve. However, once the potential barrier crosses the diode behaves normally, as the curve becomes more linear. And similarly, you can absorb the decrease of the depleted region, as the voltage and electricity vary. In the graph, you can see, as the reverse bias, will increase the potential barrier, with rising in electricity and current. Through this process, the Kinetic energy will rise, which in turn will end up damaging the diode, as it causes reverse current leakage and voltage breakdown, as mentioned in the graph. Application of PN Junction Diode Technical applications In general, the PN junction diode is used as a rectifier to convert AC current into DC current Zener diode is a special kind of P-N junction diode is used in circuits to manage the regulation of voltage In electrical circuit, the diode is deployed as a switch that turns on and off small circuits inside a more complex circuit As a reverse-biased P-N junction diode, it is used as a photodiode since it is light- sensitive. LED also constitutes a distinct kind of P-N junction diode, in the case of a forward basis that emits light. P-N junction Diode in regular uses It can be used as solar cells LED applications Equipment like oscillators and electric circuits There are many other difficult topics like the PN Junction diode in Physics, which in general, the students will find hard to understand at first, and they must continuously practice understanding them better. If you are facing

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