A Universal Method to Produce Low-Work Function Electrodes for Organic Electronics

Organic and printed electronics technologies require conductors with a work function that is sufficiently low to facilitate the transport of electrons in and out of various optoelectronic devices. We show that surface modifiers based on polymers containing simple aliphatic amine groups substantially...

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Bibliographic Details
Published in:Science (American Association for the Advancement of Science) 2012-04, Vol.336 (6079), p.327-332
Main Authors: Zhou, Yinhua, Fuentes-Hernandez, Canek, Shim, Jaewon, Meyer, Jens, Giordano, Anthony J., Li, Hong, Winget, Paul, Papadopoulos, Theodoros, Cheun, Hyeunseok, Kim, Jungbae, Fenoll, Mathieu, Dindar, Amir, Haske, Wojciech, Najafabadi, Ehsan, Khan, Talha M., Sojoudi, Hossein, Barlow, Stephen, Graham, Samuel, Brédas, Jean-Luc, Marder, Seth R., Kahn, Antoine, Kippelen, Bernard
Format: Article
Language:English
Subjects:
Amines
Application fields
Applied sciences
Conducting polymers
Conductors
Drains
Electric potential
Electrodes
Electronics
Electrons
Energy
Exact sciences and technology
Graphene
Light emitting diodes
Molecules
Natural energy
Optoelectronic devices
Organic chemistry
Photovoltaic cells
Photovoltaic conversion
Polymer industry, paints, wood
Polymers
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Solar cells. Photoelectrochemical cells
Solar energy
Technology of polymers
Transistors
Washing
Work functions
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Summary:Organic and printed electronics technologies require conductors with a work function that is sufficiently low to facilitate the transport of electrons in and out of various optoelectronic devices. We show that surface modifiers based on polymers containing simple aliphatic amine groups substantially reduce the work function of conductors including metals, transparent conductive metal oxides, conducting polymers, and graphene. The reduction arises from physisorption of the neutral polymer, which turns the modified conductors into efficient electron-selective electrodes in organic optoelectronic devices. These polymer surface modifiers are processed in air from solution, providing an appealing alternative to chemically reactive low-work function metals. Their use can pave the way to simplified manufacturing of low-cost and large-area organic electronic technologies.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.1218829