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Hybrid interfaces of conjugate polymers: Band edge alignment studied by ultraviolet photoelectron spectroscopy

Published online by Cambridge University Press:  03 March 2011

W.R. Salaneck  and
M. Fahlman
W.R. Salaneck*
Affiliation:
Department of Physics, Department of Physics, Linköping University, S-581 83 Linköping, Sweden
M. Fahlman
Affiliation:
Department of Science and Technology, ITN, Linköping University, S-581 83 Linköping, Sweden
*
a)Address all correspondence to this author. e-mail: wrs@ifm.liu.se
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Abstract

The control of hybrid interfaces in polymer-based electronic devices may be enabling in many applications. The engineering of hybrid interface involves (requires) an understanding of the electronic structure of materials—one organic and one inorganic—that form the two halves of hybrid interfaces, as well as the electronic and chemical consequences of the coupling of the two. Although much literature exists describing the interfaces between vapor-deposited organic molecules and model molecules for polymers on the surfaces of clean metals in ultrahigh vacuum, few studies have been reported on spin-coated, semiconducting polymer films on realistic substrates. Spin coating in an inert atmosphere (or even air) is a central part of the process of the fabrication of polymer-based light-emitting devices and other modern polymer-based electronic components. Here, work on the electronic structure of semiconducting (conjugated) polymer films spin-coated onto selected inorganic substrates, carried out using ultraviolet photoelectron spectroscopy, is reviewed and summarized to generate a generalized picture of the hybrid interfaces formed under realistic device fabrication conditions.

Keywords

Electron emissionElectronic structurePolymer
Type
Reviews—Organic Electronics Special Section
Information
Journal of Materials Research , Volume 19 , Issue 7 , July 2004 , pp. 1917 - 1923
Copyright
Copyright © Materials Research Society 2004

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