Semiconductor basics summary, Other Engineering

N-type (for example add Antimony)

The are materials which have Pentavalent impurity atoms (Donors) added and conduct by the "electron" movement and are called as N-type Semiconductors. In these types of materials:

  • Donors are positively charged.
  • There exists large number of free electrons.
  • A small number of holes in the relation to number of free electrons.
  • Doping gives:
    • the positively charged donors.
    • the negatively charged free electrons.
  • Supply of energy gives:
    • the negatively charged free electrons.
    • the positively charged holes.

P-type (for example add Boron)

These are materials which have Trivalent impurity atoms (Acceptors) added and conduct by the "hole" movement and are known as, P-type Semiconductors.

In these types of materials are:

  • Acceptors are charged negative.
  • Large number of holes is there.
  • There is small number of free electrons in relation to number of holes.
  • Doping provides:
    • acceptors which are negatively charged.
    • holes which are positively charged.
  • The supply of energy gives:
    • positively charged holes.
    • negatively charged free electrons.

and P and N-types both as a whole, are electrically neutral.

Posted Date: 9/3/2012 8:36:42 AM | Location : United States

Related Discussions:- Semiconductor basics summary, Assignment Help, Ask Question on Semiconductor basics summary, Get Answer, Expert's Help, Semiconductor basics summary Discussions

Write discussion on Semiconductor basics summary
Your posts are moderated
Related Questions
hardness of bore well water is less than sea water

Electronics Engineering Assignment# Solve problems using DC electrical principles 1.3 A 220 F capacitor is required to store 11mJ of energy. What voltage needs to appear

A half skeleton pattern for a hollow pipe is shown. Since the pipe is symmetrical about the pouring line, the same pattern will serve the purpose of moulding both the halves in two

Artificial Intelligence Artificial Intelligence is a typical science to describe, because it has fuzzy borders with, psychology, computer science, mathematics, philosophy, stat

Q. What are the ingredients of moulding components? Ans. Polymer Additives: One or more of the following materials are added to the polymers, either before or during poly

explain the objective of capital budgeting

Problem 1 Case Study - Development of a new sewage secondary treatment plant Context and location: Consideration is being given to the development of a new major sewage seco

show that heat and work are path functons

Students are to undertake a tunnel blast design for the following conditions: • Tunnel is 5.5m wide by 5.5.m high • Rock is a sandstone with a UCS of 400 MPa • Drill hole diameter