Microstructural Characterization and Charge Transport in Thin Films of Conjugated Polymers

The performance of semiconducting polymers has been steadily increasing in the last 20 years. Improved control over the microstructure of these materials and a deeper understanding of how the microstructure affects charge transport are partially responsible for such trend. The development and widesp...

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Bibliographic Details
Published in:Advanced materials (Weinheim) 2010-09, Vol.22 (34), p.3812-3838
Main Authors: Salleo, Alberto, Kline, R. Joseph, DeLongchamp, Dean M., Chabinyc, Michael L.
Format: Article
Language:English
Subjects:
charge transport
conjugated polymers
Microscopy, Atomic Force
Nanostructures - chemistry
Photons
Polymers - chemistry
Scattering, Radiation
Semiconductors
thin films
Thiophenes - chemistry
X-Ray Absorption Spectroscopy
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Summary:The performance of semiconducting polymers has been steadily increasing in the last 20 years. Improved control over the microstructure of these materials and a deeper understanding of how the microstructure affects charge transport are partially responsible for such trend. The development and widespread use of techniques that allow to characterize the microstructure of semiconducting polymers is therefore instrumental for the advance of these materials. This article is a review of the characterization techniques that provide information used to enhance the understanding of structure/property relationships in semiconducting polymers. In particular, the applications of optical and X‐ray spectroscopy, X‐ray diffraction, and scanning probe techniques in this context are described. Charge transport in semiconducting polymers is governed by their structure at all lengthscales, from the nanoscale crystalline structure to the mesoscale arrangement between grains and how they are connected. The characterization techniques that help understand how the microstructure of these materials affects the carrier mobility and device performance are reviewed.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.200903712