Which mechanism causes reduced electron mobility when dopants accumulate at grain boundaries?

💡 Explanation

Dopant segregation creates charged regions depleting carriers nearby; therefore, electron mobility reduces because space charge layer formation impedes their trajectories, rather than phonons or quantum effects dominating conduction.

• Which effect arises within active galactic nuclei experiencing curvature?
• Which outcome occurs when oil viscosity increases in hydraulic actuators?
• Which risk increases when a laser's coherence length degrades?
• Which outcome occurs when high-pressure liquid water flashes to steam in a turbine?
• Which outcome is intensified when a black hole evaporates?
• Which consequence would occur to an observer inside an elevator accelerating upwards in empty space, due to Einstein's equivalence principle?