Ambipolar organic phototransistor
- 31 July 2007
- journal article
- Published by Elsevier BV in Optical Materials
- Vol. 29 (11), 1332-1337
- https://doi.org/10.1016/j.optmat.2006.07.001
Abstract
We report on the fabrication and characterization of ambipolar organic phototransistors based on amorphous thin films of donor/acceptor dyad N-[7-(N,N-diphenylamino)-9,9′-spirobifluoren-2-yl]-N′-(2,5-di-tert-butylphenyl)-3,4:9,10-perylenetetracarboxylicdiimide. The mechanism of light enhanced photocurrent is based on photoinduced charge transfer between the donor and the acceptor unit. The photoresponsivity of up to 0.2 A/W can be obtained. The drain current is significantly increased by a factor of nearly 100 as the light is used as an additional control parameter, making the device interesting for sensor applications.Keywords
This publication has 17 references indexed in Scilit:
- Light responsive amorphous organic field-effect transistor based on spiro-linked compoundOptical Materials, 2007
- High ON/OFF ratio and stability of amorphous organic field-effect transistors based on spiro-linked compoundsSynthetic Metals, 2005
- Fabrication of ambipolar field-effect transistor device with heterostructure of C60 and pentaceneApplied Physics Letters, 2004
- Organic phototransistor based on intramolecular charge transfer in a bifunctional spiro compoundApplied Physics Letters, 2004
- Organic Transistor Circuits for Application to Organic Light-Emitting-Diode DisplaysJapanese Journal of Applied Physics, 2003
- Optical amplification in spiro-type molecular glassesThin Solid Films, 2002
- Field-Effect Mobility and Morphology Study in Amorphous Films of Symmetric and Unsymmetrical Spiro-Linked CompoundsMRS Proceedings, 2002
- Light responsive polymer field-effect transistorApplied Physics Letters, 2001
- Solid-state dye-sensitized mesoporous TiO2 solar cells with high photon-to-electron conversion efficienciesNature, 1998
- Low molecular organic glasses for blue electroluminescenceSynthetic Metals, 1997