Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronic Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

HOLE as a charge carrier

Status
Not open for further replies.

XT.5155

Member level 1
Joined
Mar 17, 2010
Messages
36
Helped
2
Reputation
4
Reaction score
2
Trophy points
1,288
Activity points
1,507
I still feel uneasy to accept HOLE as charge carrier.

according to WHAT pricinciple in physics that we can accept HOLE as positive charge carrier.

Positive charge carrier comparable in size to electron is POSITRON.
Which we don't have inside semiconductor material.

Please any one, your thought can be really helpful here.

XT
 

GiuseppeLaPiana

Newbie level 5
Joined
Jul 5, 2011
Messages
10
Helped
5
Reputation
10
Reaction score
5
Trophy points
1,283
Activity points
1,367
When the temperature of a semiconductor rises, electrons in the valence band gain enough thermal energy to jump to the conduction band. This leaves what we call a "hole" in the valence band, it is more or less a simplified way of naming an empty state in the valence band.

When an electric field is applied to a band with no empty states, the net electrical current generated is 0, this is because for every electron moving in this "full" band, there is an equal and opposite reaction by another electron. In a band with holes however, the electron that isn't accounted for must be removed from the current equation for that band. The result is a net current = qv (positve charge * velocity left over from the missing electron).
 
  • Like
Reactions: XT.5155

    XT.5155

    points: 2
    Helpful Answer Positive Rating
Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top