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← ScienceWhich outcome occurs when an organic photovoltaic's active region's morphology causes poorly overlapping orbitals?
A)Decreased charge carrier mobility✓
B)Increased exciton dissociation rate
C)Enhanced light absorption spectrum
D)Improved thermal stability limits
💡 Explanation
Decreased charge carrier mobility occurs because inefficient orbital overlap hinders *electron hopping*, thus impeding charge transport. The energy barrier for electrons increases; therefore, mobility is lessened rather than having a higher rate of excitons dissociating in other efficient systems.
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