The physics of organic semiconductors focuses on how carbon-based molecules and polymers conduct electricity, a process fundamentally different from traditional inorganic semiconductors like silicon. Instead of rigid crystal lattices, these materials rely on -conjugated systems where overlapping p-orbitals allow electron delocalization. Key Physical Concepts Charge Transport
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(bound electron-hole pairs) rather than free carriers. Because of high localization, these excitons require specific interfaces (heterojunctions) to separate into usable electricity. cpb-us-e1.wpmucdn.com Key Applications Used in modern smartphone and TV displays. OPVCs (Organic Photovoltaics): The physics of organic semiconductors focuses on how
Carrier Mobility: Generally much lower than in silicon, rarely exceeding Key Materials and Device Physics Mechanism: Electrons and holes are injected from opposite
Before looking at solids, we must understand the individual molecules.
Because of the weak intermolecular coupling, charge transport is often "disordered" compared to traditional semiconductors. ScienceDirect.com Polaron Hopping