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#doping

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01 ·Device Physics·FREE·11 min read Band Theory from the Ground Up — Why It Had to Be Silicon What actually separates a conductor from an insulator? Starting from why atomic energy levels smear into bands, this piece builds up bandgaps, Fermi statistics and doping with no prior physics assumed — and lands on the real answer to 'why is every chip made of silicon', which turns out to be about the oxide, not the element.