They have an energy gap less than 4eV (about 1eV).
The name semiconductor comes from the fact that these materials have an electrical conductivity between that of a metal, like copper, gold, etc. Semiconductors are materials, inorganic or organic, which have the ability to control their conduction depending on chemical structure, temperature, illumination, and presence of dopants. Insulators, on the other hand, are made of a wide variety of materials depending on factors such as the desired resistance. Conductors are made of high-conductivity materials such as metals, in particular copper and aluminium. Substances in which electricity can flow are called conductors. While resistivity is a material property, resistance is the property of an object. Electrical resistance is expressed in Ohms. Note that, electrical resistivity is not the same as electrical resistance. The SI unit of electrical resistivity is the ohm-metre (Ω⋅m). The symbol of resistivity is usually the Greek letter ρ (rho). A low resistivity indicates a material that readily allows the flow of electric current. m.Įlectrical resistivity and its converse, electrical conductivity, is a fundamental property of a material that quantifies how strongly it resists or conducts the flow of electric current.Nickel – Electrical Resistivity and Electrical ConductivityĮlectrical resistivity of Nickel is 69.3 nΩ
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