Organic Semiconductors: Pdf !!top!!

When a hole (positive charge) or electron is injected from a metal electrode, it moves not as a free particle but as a polaron —a charge distorted by the surrounding molecular lattice.

In contrast to the band transport seen in highly ordered inorganic crystals, charge transport in many OSCs (especially thin films) occurs through . organic semiconductors pdf

| Parameter | Typical Value (Organic) | Silicon Value | | :--- | :--- | :--- | | Mobility (cm²/Vs) | 0.01 – 10 | ~1500 | | Bandgap (eV) | 1.5 – 3.0 | 1.12 | | Absorption Coefficient (cm⁻¹) | ~10⁵ (direct) | ~10³ (indirect) | | Operating Temp. | <150°C | >1000°C | | Mechanical Flexibility | High | Rigid | When a hole (positive charge) or electron is