Which mechanism reduces electron mobility within polycrystalline photovoltaic cells?

💡 Explanation

In polycrystalline cells, grain boundary scattering impedes electron flow because crystal lattice discontinuities disrupt electron waves; therefore mobility decreases, rather than increasing with other scattering that requires defects.

• Which electromagnetic interference increases when a waveguide narrows?
• Which mechanism accelerates oxygen production rate in catalytic converters?
• Which outcome results when coherence drops in LIDAR wind measurement?
• Which phenomenon limits the maximum achievable efficiency in an Organic Rankine Cycle waste heat recovery system?
• Which outcome occurs when exhaust turbine blades in a turbocharger experience prolonged exposure to extremely high temperatures?
• Which constraint becomes significant as exhaust velocity approaches lightspeed?