We acknowledge Dr. N. S. Vidhyadhiraja for useful discussions, Prof. S. Ramakrishnan for providing MEHPPV and valuable suggestions, Prof. U. Scherf for providing PFO-TT and ITO-coated rubbed polyimide device substrates. Supporting Information is available online from Wiley InterScience or from the author.
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Communication
Direct Estimate of Transport Length Scales in Semiconducting Polymers†
Article first published online: 10 MAY 2007
DOI: 10.1002/adma.200602405
Copyright © 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Additional Information
How to Cite
Kabra, D. and Narayan, K. S. (2007), Direct Estimate of Transport Length Scales in Semiconducting Polymers. Adv. Mater., 19: 1465–1470. doi: 10.1002/adma.200602405
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Publication History
- Issue published online: 25 MAY 2007
- Article first published online: 10 MAY 2007
- Manuscript Received: 24 OCT 2006
- Manuscript Revised: 23 FEB 2006
Keywords:
- Polymers;
- Polymers, semiconducting;
- Semiconductors
A method for determining the electron/hole transport length scale of model semiconducting polymer systems by scanning a narrow-light probe beam over the nonoverlapping anode/cathode region in asymmetric sandwich device structures is presented (see figure). Electron versus hole collection efficacy, and disorder and spatial anisotropy in the electrical transport parameters can be estimated.