jeheron Posted May 7, 2007 Share Posted May 7, 2007 Is there any observable difference between the physical and electrical properties of n-type semiconductor materials and p-type semiconductor materials? Link to comment Share on other sites More sharing options...
brockrhodes Posted May 7, 2007 Share Posted May 7, 2007 Do you mean in terms of why we dope to make n-type or p-type semiconductors, or trends in the materials themselves based on the type? Link to comment Share on other sites More sharing options...
jeheron Posted May 7, 2007 Author Share Posted May 7, 2007 In terms of the proerties of the materials themselves. I am asking the question to better understand each individual kind of semiconductor matieral before moving onto p-n junctions and npn and pnp interfaces. Link to comment Share on other sites More sharing options...
Klaynos Posted May 7, 2007 Share Posted May 7, 2007 The density of states is different, so this leads to differences in the properties, but I can't really recall what these are right now, and I don't have the time to go check my notes :| But more importantly they both act as increased charge carrier semiconductors... Link to comment Share on other sites More sharing options...
BhavinB Posted May 7, 2007 Share Posted May 7, 2007 in the Hall experiment, both behave differently. Link to comment Share on other sites More sharing options...
theCPE Posted May 7, 2007 Share Posted May 7, 2007 N-type (nfets, nmos, etc) utilize electrons as charge carriers. P-type (pfets, pmos, etc) utilize holes as charge carriers. Holes are not as mobile or effecient at transporting charge and therefore n-type semiconductors are "stronger" or "faster". For example in CMOS, the width of a pfet is always made larger than a corresponding nfet to create equal pull up and pull down strengths. Link to comment Share on other sites More sharing options...
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