Doping (1 Viewer)

[passion89]

I came across a question that asked what doping would do to a conductor.

I know that doping increases a semi-conductor's conductivity through the addition/removal of electrons.

I wrote that doping would do the opposite to a conductor ie: decrease it's conductivity.

Is that true? Does doping decrease a conductor's ability to conduct?

 

[jest]

yeh it does, the conductor wouldn't work as well if it was doped

 

[angmor]

does anyone know why this happens though?

 

[Jase]

what the.. that's certainly not in the syllabus.

I don't think doping a conductor would make much difference to it's conductivity.

 

[Naylyn]

Donping a conductor add impurities to the conductors crystal matrix, which increases its resistance because it is then harder for the electrons to flow.

 

[passion89]

what the.. that's certainly not in the syllabus.

It isn't - but it was in my trials so my teacher seems to think so.

 

[helper]

My initial reaction was that it isn't but is just a rewording on the dot point

"identify that resistance in metals is increased by the presence of impurities and scattering of electrons by lattice vibrations"