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.
Direct Estimate of Transport Length Scales in Semiconducting Polymers†
Article first published online: 10 MAY 2007
Copyright © 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Volume 19, Issue 11, pages 1465–1470, June, 2007
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
- Issue published online: 25 MAY 2007
- Article first published online: 10 MAY 2007
- Manuscript Received: 24 OCT 2006
- Manuscript Revised: 23 FEB 2006
- Polymers, semiconducting;
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.