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Which outcome occurs when a molecular crystal of an organic semiconductor is subjected to high pressure?

A)Band gap energy generally increases
B)Increased exciton diffusion length occurs
C)Intermolecular orbital overlap typically increases
D)Charge carrier mobility decreases sharply

💡 Explanation

Increased pressure enhances intermolecular interactions, causing enhanced orbital overlap because this reduces the overall electronic energy. This improves charge transport within grains; therefore, increased orbital overlap occurs, rather than decreased mobility or modified band structures caused by electronic transitions.

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