What is semiconductor device physics?

A semiconductor device is an electronic component that relies on the electronic properties of a semiconductor material (primarily silicon, germanium, and gallium arsenide, as well as organic semiconductors) for its function. Its conductivity lies between conductors and insulators.

How does a semiconductor work physics?

Semiconductors works due to imbalance of electrons that carry negative charge. This imbalance of electrons generates positive (where there are excess protons) and negative charges (where there are excess electrons) at two ends of surfaces of the semiconductor material. This is how semiconductor works.

What are examples of semiconductor devices?

Some examples of three-terminal semiconductor devices include Bipolar transistor, IGBT, TRIAC, Field-effect transistor, Silicon-controlled rectifier, Thyristor, and more.

What are the properties of semiconductor devices?

Properties of Semiconductors

  • Resistivity: 10-5 to 106 Ωm.
  • Conductivity: 105 to 10-6 mho/m.
  • Temperature coefficient of resistance: Negative.
  • Current Flow: Due to electrons and holes.

What is semiconductor diode in physics?

A diode made of semiconductor components, usually silicon. The cathode, which is negatively charged and has an excess of electrons, is placed adjacent to the anode, which has an inherently positive charge, carrying an excess of holes. At this junction a depletion region forms, with neither holes nor electrons.

What is P-type and n-type semiconductor?

The majority carriers in a p-type semiconductor are holes. In an n-type semiconductor, pentavalent impurity from the V group is added to the pure semiconductor. Examples of pentavalent impurities are Arsenic, Antimony, Bismuth etc. The pentavalent impurities provide extra electrons and are termed as donor atoms.

What is the conductivity of semiconductor?

Table 1 shows the room-temperature resistivities and conductivities for a number of metals, intrinsic semiconductors and insulators….Electrical Conduction in Semiconductors.

Material Resistivity (Ω-cm) Conductivity (Ω-1-cm-1)
Carbon (Graphite) 3-60 x 10-5 1.67 × 103 to 3.33 × 104
Germanium 1-500 x 10-3 2.0 to 1.00 × 103