Question
Thu April 05, 2012 By: Prkriti Gupta
 

DIFFERENCE BETWEEN N TYPE AND P TYPE SEMICONDUCTORS OF 3 MARKS INEED IT IMMEDIATELY PLS WITH RGDS

Expert Reply
Sat April 07, 2012
N-type semiconductor materials are doped with elements which have spare electrons in their outer shells. This gives N-type silicon free electrons (which are negatively charged particals) which can move about at will - with the potential to create current.

P-type semiconductor materials are doped with elements that have too few electrons in their outer shells. Therefore the opposite of electrons - holes - are free to move about within the material - with the potential to create current. 
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