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
Q.  Describe the structure of grain boundary. Ans. One phase of metal contains many grains of various orientation, the individual crystals are called grains. Thus a grain is

write a note on tracing a closed loop.what are the characteristic,features of a closed loop.

Changes in temperature and pressure: The changes in temperature and pressure of the gases through a gas turbine engine are illustrated in Figure 1.5 The efficiency with which t


what is the importance of cetane number in crude oil assy?


Principles of Jet Propulsion: Newton 's Laws of Motion. To understand the basic principles of jet propulsion it is necessary to understand the practical application of Sir I

all about pepsi company symbol PEP 1. What is the name of the company? What is the industry sector? 2. What are the operating risks of the company? 3. What is the financial risk

Latches and flip-flop circuits: Latches and Flip-flop circuits are a combination of logic gates that perform basic memory functions for computers and peripherals. Both these c

examples dead end water distribution system