Photo-induced charge transfer across the interface between organic molecular crystals and polymers

Abstract

Photo-induced charge transfer of positive and negative charges across the interface between an ordered organic semiconductor and a polymeric insulator is observed in the field-effect experiments. Immobilization of the transferred charge in the polymer results in a shift of the field-effect threshold of polaronic conduction along the interface in the semiconductor, which allows for direct measurements of the charge transfer rate. The transfer occurs when the photon energy exceeds the absorption edge of the semiconductor. The direction of the transverse electric field at the interface determines the sign of the transferred charge; the transfer rate is controlled by the field magnitude and light intensity.

References in corpus (7)

• Intrinsic charge transport on the surface of organic semiconductors
• Organic Single-Crystal Field-Effect Transistors
• Field Effect Transistors on Rubrene Single Crystals with Parylene Gate Insulator
• Single-Crystal Organic Field Effect Transistors with the Hole Mobility ~ 8 cm2/Vs
• Effects of polarized organosilane self-assembled monolayers on organic single-crystal field-effect transistors
• Electric field induced charge injection or exhaustion in organic thin film transistor
• Nonexponetial relaxation of photoinduced conductance in organic field effect transistor

Cited by in corpus (5)

• Hall effect of quasi-hole gas in organic single-crystal transistors
• Primary Photoexcitations and the Origin of the Photocurrent in Rubrene Single Crystals
• Effect of shallow traps on polaron transport at the surface of organic semiconductors
• Quantum Beats of a Multiexciton State in Rubrene Single Crystals
• Low-voltage Driving Phototransistor Based on Dye-sensitized Nanocrystalline Titanium Dioxide Thin Films