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Band Theory: Metallic Bonding

Photoelectron Spectroscopy. Band Theory: Metallic Bonding. Photoelectron Spectroscopy. Band Theory: Metallic Bonding. Band Structure for Periods 4-6, Group 1A – 2B. http://employees.oneonta.edu/viningwj/sims/metallic_bonding_band_theory_s.html. Conduction in Solids. Silicon Semiconductors.

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Band Theory: Metallic Bonding

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  1. Photoelectron Spectroscopy Band Theory: Metallic Bonding

  2. Photoelectron Spectroscopy Band Theory: Metallic Bonding

  3. Band Structure for Periods 4-6, Group 1A – 2B http://employees.oneonta.edu/viningwj/sims/metallic_bonding_band_theory_s.html

  4. Conduction in Solids

  5. Silicon Semiconductors

  6. Silicon Semiconductors

  7. Chip Fabrication • Make really, really pure Si • Add impurities in a controlled way (doping) SiO2(s) + 4 HCl  SiCl4 (l) + H2O(l) SiCl4 purified by distillation. SiCl4 + 2 Zn  Si + ZnCl2 Si now 99.9% pure. Zone refining used to purify to 99.99999% pure.

  8. Doping • Apply coating • Illuminate through mask • Dissolve illuminated areas • Add gas phase dopant • Repeat

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