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I read online that transistors are made by doping silicon with other elements such as arsenic, phosphorus, or aluminium in order to increase its conductivity. How are these doping materials selected?

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  • $\begingroup$ This has an answer over on Physics (note it is my answer, so reader beware): physics.stackexchange.com/questions/132604/… $\endgroup$ – Jon Custer Jun 28 '16 at 12:55
  • $\begingroup$ @JonCuster can we increase the conductivity of a conductor(like aluminium) by doping? $\endgroup$ – Jasmeet singh Jul 2 '16 at 12:29
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    $\begingroup$ Typically 'doping' a metal results in increased scattering and a decrease in conductivity. Not an absolute rule, but pretty good bet for most metals. $\endgroup$ – Jon Custer Jul 3 '16 at 10:38
  • $\begingroup$ @JonCuster what do you mean by 'increased scattering'?? $\endgroup$ – Jasmeet singh Aug 10 '16 at 18:23
  • $\begingroup$ The impurities are different than the lattice, interrupting the normal electronic structure, causing more carrier scattering. $\endgroup$ – Jon Custer Aug 10 '16 at 21:46

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