Which mechanism suppresses conductivity in intrinsic semiconductors as temperature decreases?

💡 Explanation

The *reduction in thermal electron excitation* across the band gap causes decreased conductivity because fewer electrons gain sufficient energy to transition into the conduction band. Therefore, conductivity decreases rather than increasing scattering impeding movement at higher temperatures.

• Which effect occurs when a reversible chemical reaction’s equilibrium constant greatly exceeds one?
• Which consequence results when interstitial carbon atoms distort iron's lattice?
• Which mechanism causes spherical aberration when focusing a laser?
• Which outcome impairs a refrigeration cycle operating beyond coolant pressure ratings?
• Which mechanism explains elevated magnetic susceptibility in iron?
• Which mechanism limits attainable spatial resolution in stimulated emission depletion (STED) microscopy?