Which outcome occurs when a crystalline semiconductor approaches absolute zero?

💡 Explanation

The band gap increases because thermal expansion decreases, leading to stronger interatomic interactions, increasing the band gap energy. Therefore, band gap increases, rather than conductivity increasing, because carriers are frozen out at those temperatures.

• Which mechanism fundamentally causes spectral line broadening due to electron energy uncertainty?
• Which risk increases when increasing grain size within ferromagnetic metals?
• Which risk increases when integrated circuit gate oxide thickness approaches the quantum tunneling threshold?
• What outcome occurs in a cryogenic refrigeration system when a gas leaks such that heat transfer increases during a phase shift?
• Which risk increases when nuclear medicine uses short-lived radioisotopes?
• Which consequence results the introduction of impurities within semiconductor crystalline structure?