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Chemistry · L5 · Crystal Defects and Semiconductors · flowchart

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by @openstemUpdated Chemistry
How large is the band gap betweenthe valence band and the conduction band?Conductor(e.g. copper, silver)Semiconductor(e.g. silicon, germanium)Insulator(e.g. diamond, quartz)Electrons move freely;conducts at any ordinary temperatureSome electrons thermally crossthe gap at room temperatureEssentially no electronscross the gap thermallyNo gap / bands overlapSmall but nonzero gap (~0.1-3 eV)Large gap (several eV or more)

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