Electronics Engineering

Basic Structure of PN Junction in Semiconductor

Basic Structure of PN Junction in Semiconductor: Most semiconductor devices employ one or more P-N junctions. The P-N junction is the control element for the performance of all semiconductor devices such as rectifiers, amplifiers, switching devices, linear and digital integrated circuits. The PN Junction in Semiconductor is produced by placing a layer of P-type semiconductor …

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Continuity Equation in Semiconductor

Continuity Equation in Semiconductor: The Continuity Equation in Semiconductor states a condition of dynamic equilibrium for the concentration of mobile carriers in any elementary volume of the semiconductor. In Fig. 6.21 we have seen that on disturbing the equilibrium concentrations of carriers (electrons and holes) in a semiconductor, the concentrations of holes or electrons vary …

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Carrier Concentration in Intrinsic Semiconductor

Carrier Concentration in Intrinsic Semiconductor: For determination of the conductivity of a semiconductor, it is essential to know the Carrier Concentration in Intrinsic Semiconductor of free electrons in conduction band and concentration of holes in valence band. Number of Electrons in the Conduction Band: The product of the number of existing states at any energy …

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Explain Conduction in Intrinsic Semiconductors

Explain Conduction in Intrinsic Semiconductors: Explain Conduction in Intrinsic Semiconductors – As already explained, conduction through a semiconductor is due to two mechanisms viz. drift and diffusion. The movement of charge carriers (electrons and holes) under the influence of an applied electric field E is termed as the drift current. The conductivity of σe of …

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