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Tag: Semiconductors

PN Junction Diodes

Science > Physics > Semiconductors > PN Junction Diodes When a crystal of semiconductor is doped such that half the portion of the crystal is doped with a trivalent impurity and the other half is doped with a pentavalent impurity, then the junction (boundary) formed is called a PN junction. The crystal itself is called […]

Physical Chemistry

Semiconductors

Science > Chemistry > Solid State > Semiconductors On the basis of electrical conductivity, substances can be classified into three types conductors, insulators, and semiconductors. In this article, we shall have a brief idea of semiconductors. Semiconductors are the substances whose conductivity lies between the conductors and insulators e.g. Germanium, Silicon, etc. They are covalent solids. […]

Tags Chemistry, Conduction band, Conductors, Doping, Electrical conductivity, Electrical properties, Electricity, Extrinsic Semiconductors, Insulators, Intrinsic semiconductors, Metallic bonds, N-type semiconductors, P-type semiconductors, Pure silicon crystal, Semiconductors, Solid-state, Valence band

Physical Chemistry

Electrical Properties of Solids

Post author By Hemant More
Post date February 2, 2020
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Science > Chemistry > Solid State > Electrical Properties of Solids In the last article, we have studied the dielectric properties of solids. In this article, we shall study the electrical properties of solids. Electrical Conductivity: The electrical conductivity of solids is due to the motion of electron or positive holes. The conductivity due to the motion […]

Tags Chemistry, Conduction band, Conductors, Electrical conductivity, Electrical properties, Electricity, Insulators, Metallic bonds, Semiconductors, Solid-state, Valence band

Physics

Temperature Dependence of Resistance

Post author By Hemant More
Post date January 2, 2020
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Science > Physics > Current Electricity > Temperature Dependence of Resistance In this article, we shall study the effect of temperature on the value of resistance and thermistors and their uses. A metallic conductor consists of a large number of free electrons. These electrons are always in a state of random motion. When a potential […]

Tags Bad conductors, Conductivity, Conductor, Current Electricity, Effect of temperature on resistance, Electric current, Good conductors, Insulators, Ohm's law, Origin of resistance, Potential difference, Resistance, Resistivity, Semiconductors, Specific resistance, Temperature Coefficient of resistance, Uses of thermistors

Physics

Introduction to Current Electricity

Post author By Hemant More
Post date January 2, 2020
1 Comment on Introduction to Current Electricity

Science > Physics > Current Electricity > Introduction In this article, we shall study the concept of current electricity, the resistance, ohm’s law, and the conductance of a conductor. Electric Current Through Conductor: A conductor is made up of very minute particles called atoms. Atoms consist of a positively charged nucleus and negatively charged electrons […]

Tags Bad conductors, Conductivity, Conductor, Current Electricity, Electric current, Good conductors, Insulators, Ohm's law, Origin of resistance, Potential difference, Resistance, Resistivity, Semiconductors, Specific resistance