Charge carriers in semiconductors, Electrical Engineering

Charge Carriers in Semiconductors

  1. In a metal, the atoms are imbedded in a "sea" of free electrons, and these electrons can move as a group under the influence of an applied electric field.
  2. In semiconductors at 0 K, all states in the valence band are full, and all states in the conduction band are empty.
  3. At T > 0 K, electrons get thermally excited from the valence band to the conduction band, and contribute to the conduction process in the conduction band.
  4. The empty states left in the valence band can also contribute to current conduction.
  5. Also, introduction of impurities has an important effect on the availability of the charge carriers
  6. Considerable flexibility in controlling the electrical properties of semiconductors.
Posted Date: 1/11/2013 4:09:05 AM | Location : United States







Related Discussions:- Charge carriers in semiconductors, Assignment Help, Ask Question on Charge carriers in semiconductors, Get Answer, Expert's Help, Charge carriers in semiconductors Discussions

Write discussion on Charge carriers in semiconductors
Your posts are moderated
Related Questions
Hi can you help to work on my project...I want you to help me writing my graduation thesis

Using star-delta transformation, calculate the current flow through RL.

Electrical circuits and systems : Electrical systems allow energy to be conveniently delivered from the point of supply to the point of application - e.g. electric railways, ca

The corners of wedge-shaped block are A(0,0,2), B(0,0,3), C(0,2,3), D(0,2,2), E(-1,2,2) and F(-1,2,3) and the reflection plane goes the Y-axis at 450 between (-X) & (Z) axis. Calcu

A 3-bit quantizer is utilized to transform the following signal into a binary digital signal. Determine the binary values of the first three samples (assuming the quantizer rounds

Q. Transformer-coupled Amplifiers? Transformer-coupled Amplifiers: The figure illustrates another type of coupling often used to couple audio frequencies - the untuned transf

Q. With a cross sectional view, explain the working of a depletion type MOSFET Draw a biasing amplifier circuit DEPLETION-TYPE MOSFET: Two types of FETs: JFETs and MOSFETs. MOS

fdsf


Draw layout of hydro-electric power plant and illustrate it briefly. Explain the following: a. Types of power plants b. Selection of power Plants