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← ScienceWhich phenomenon causes lower short-circuit current in amorphous silicon solar cells, rather than crystalline cells?
A)Density of localized tail states✓
B)Increased grain boundary recombination
C)Auger recombination event increase
D)Phonon scattering cross-section increase
💡 Explanation
Amorphous silicon exhibits lower current due to Urbach tail absorption because the increased density of localized tail states within the band gap causes electrons to be trapped, therefore reducing carrier mobility and collection, rather than allowing efficient conduction.
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