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Heavy hole's and light holes

  • Thread starter ehrenfest
  • Start date
1,996
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1. Homework Statement
A hole is just a valence band with one missing electron. A semiconductor is just a material that has its conduction electron concentration within a certain range. A direct-gap semiconductor is just a semiconductor with the conduction band edge and the valence band edge on the same vertical in the k-E graph.

But then my book talks about heavy holes and light holes and split off holes and I just don't understand what they are.


2. Homework Equations



3. The Attempt at a Solution
 

Answers and Replies

tiny-tim
Science Advisor
Homework Helper
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Does this help?

http://touch.caltech.edu/courses/EE40%20Web%20Files/Supplements/01_Effective_Mass.pdf [Broken]​
 
Last edited by a moderator:
1,996
1
Does this help?

http://touch.caltech.edu/courses/EE40%20Web%20Files/Supplements/01_Effective_Mass.pdf [Broken]​
Sorry, not really. I just don't understand what they are. I don't understand how you can have three different valence bands when I thought by definition there was only one?
 
Last edited by a moderator:
1,996
1
anyone?

SOMEONE PLEASE HELP!! I NEED TO UNDERSTAND THIS!! What is a heavy hole and what is a light hole?
 
Last edited:
1,996
1
Help!
 

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