HALL EFFECT IN p-TYPE SEMICONDUCTOR. This demonstration shows Hall effect in semiconductor materials and shows how n-type and p-type semiconductors can be identified. The experimental setup shown in Figure 2.7.8, depicts a semiconductor bar with a rectangular cross section and length L. A voltage V x is applied between the two contacts, resulting in a field along the x-direction. A Hall effect transducer measuring small distances. Principle of Hall Effect. Figure 2. Hall Effect Consider the sample of p-type semiconductor with current density J x flowing in the x-direction. Being very simple and straight forward phenomena in physics, Hall effect is a fundamental principle in magnetic field sensing and have many practical applications in our daily life. Figure \(\PageIndex{2}\) shows a semiconductor ⦠Hall effect definition finds immense application in integrated circuits (ICs) in the form of Hall effect sensors. As shown consider a rectangular plate of a p-type semiconductor of width âwâ and thickness âdâ placed along x-axis. In the presence of a magnetic field B 0 along the z-direction, the holes will experience a force (the Lorentz force) driving them towards the bottom of the sample as shown in Figure 1. If both holes and electrons are conduction carriers, then a different derivation has to be done to solve for Hall coefficient. The Hall effect describes the behavior of the free carriers in a semiconductor when applying an electric as well as a magnetic field. Figure \(\PageIndex{2}\) Hall effect in presence of both holes (h) and electrons (e) \(^{[3]}\). When a potential difference is applied along its length âaâ current âIâ starts flowing through it in x direction. The Hall Effect is used for obtaining information regarding the semiconductor type, the sign of charge carriers, to measure electron or hole concentration and the mobility. The principle of Hall Effect states that when a current-carrying conductor or a semiconductor is introduced to a perpendicular magnetic field, a voltage can be measured at the right angle to the current path. Figure 3. Utilizing the Hall effect to measure blood flow. The Hall Eï¬ect 1 Background In this experiment, the Hall Eï¬ect will be used to study some of the physics of charge transport in metal and semiconductor samples. With a brief light shed on its applications, let us move on to how you can make the Hall effect derivation from scratch. THEORY :-If a current carrying semiconductor specimen is placed in a magnetic field , then an induced Electric field is generated , which will produced potential difference between two surfaces of semiconductor .This potential difference is known as âHall Voltageâ and is proportional to magnetic field and current () There by, we can also know whether the material is a conductor, insulator or a semiconductor. 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