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← ScienceWhich mechanism causes increased conductivity when light strikes amorphous silicon?
A)Photogeneration of electron-hole pairs✓
B)Increased phonon scattering at defects
C)Dopant atom photo-ionization
D)Light stimulated crystal recrystallization
💡 Explanation
The increased conductivity arises because photogeneration of electron-hole pairs increases the number of charge carriers within the material's band structure. Therefore, more current flows, rather than alternatives involving lattice defects or doping which have different preconditions.
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