Recently I read and knew that when pentavalent (Si) element mixed with tetravalent (Phosphorus), the mixer compound semiconductor becomes NPN because there's an electron extra on its outer cell (8+1). The extra electron is carrier.
And when pentavalent (Si) element mixed with trivalent (Boron), the mixer compound semiconductor becomes PNP because there's a space empty (hole) on its outer cell (7+0). The hole travels for conduction.
This is 'HUGE' thing I just learned as a chemistry. More than this in books are hard to understand for me. So I wish to use simple words and example while answering. One of my confusions is:
- it mean, the battery has electrons and holes both? And and we need electrons or holes (any one) to get the circuit working? And NPN conducts electrons & PNP conducts holes?
My confusion is in concept, so it might sound silly.
And when pentavalent (Si) element mixed with trivalent (Boron), the mixer compound semiconductor becomes PNP because there's a space empty (hole) on its outer cell (7+0). The hole travels for conduction.
This is 'HUGE' thing I just learned as a chemistry. More than this in books are hard to understand for me. So I wish to use simple words and example while answering. One of my confusions is:
- it mean, the battery has electrons and holes both? And and we need electrons or holes (any one) to get the circuit working? And NPN conducts electrons & PNP conducts holes?
My confusion is in concept, so it might sound silly.
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