: Unlike the strong covalent bonds in Silicon, organic molecular solids are held together by weak van der Waals forces
Typically includes a hole-injection layer (HIL), hole-transport layer (HTL), emission layer (EML), and electron-transport layer (ETL). Advantage: OLEDs provide superior contrast and flexibility. 4.2 Organic Photovoltaics (OPVs)
) is the key metric. While lower than silicon, optimization of molecular alignment (crystalline films) has led to significant improvements. 5. Summary and Future Directions
OFETs serve as the fundamental building blocks for flexible microelectronics and active-matrix displays. They operate by modulating the charge density within an organic semiconductor channel via a gate voltage ( VGcap V sub cap G
Proposed by Bässler, this is the standard model for describing transport in disordered organics.
orbital sits perpendicular to the molecular plane. When adjacent carbon atoms share these orbitals, they overlap laterally to form . HOMO and LUMO Levels The delocalization of
electrons across the conjugated chain splits the atomic orbitals into molecular orbitals:
Utilize a gate voltage to modulate the density of charge carriers in a thin organic layer, acting as a switch or amplifier. Challenges and Future Directions
– Physics of Organic Semiconductors (Ed. Wolfgang Brütting)
