Which phenomenon causes increased scattering in polycrystalline silicon?

💡 Explanation

Grain boundary electron deflection occurs, because lattice discontinuities impede electron movement; therefore, scattering increases rather than decreasing carrier concentration or band damping at grain interfaces.

• Which mechanism causes increased electron tunneling when bias increases?
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• Which effect causes shifting interference fringes when crystal surface oxidizes?
• Which outcome occurs when an exhaust catalyst operates near its lower activation energy threshold?
• Which outcome slows down when catalyst deactivation occurs?