This article is part of the Journal of Raman Spectroscopy special issue entitled “Proceedings of the 9th European Conference on Nonlinear Optical Spectroscopy (ECONOS), Bremen, Germany, June 21–23, 2010” edited by Peter Radi, PSI, Villigen, Switzerland, and Arnulf Materny, Jacobs University, Bremen, Germany.
Raman spectroscopic identification of fullerene inclusions in polymer/fullerene blends†
Version of Record online: 11 MAY 2011
Copyright © 2011 John Wiley & Sons, Ltd.
Journal of Raman Spectroscopy
Volume 42, Issue 10, pages 1897–1900, October 2011
How to Cite
Falke, S., Eravuchira, P., Materny, A. and Lienau, C. (2011), Raman spectroscopic identification of fullerene inclusions in polymer/fullerene blends. J. Raman Spectrosc., 42: 1897–1900. doi: 10.1002/jrs.2966
- Issue online: 24 OCT 2011
- Version of Record online: 11 MAY 2011
- Manuscript Accepted: 15 MAR 2011
- Manuscript Received: 13 OCT 2010
- Raman spectroscopy;
- organic photovoltaics;
- C60 fullerene;
- conjugated polymer
Thin films of the conjugated polymer poly(3-hexylthiophene) (P3HT) and blends of the soluble fullerene derivative[6,6]-phenyl C61-butyric acid methyl ester (PCBM) with P3HT—a well studied but not completely understood donor–acceptor system for organic solar cells—have been studied by means of UV–visible absorption and resonant Raman spectroscopy. Additionally, we have employed atomic force microscopy phase imaging to characterize the nanomorphology of the P3HT : PCBM thin film, revealing a close intermixing of two phases with domain sizes ranging from a few to several tens of nanometers. A systematic analysis of pristine polymer and blend Raman spectra provides evidence that features attributable to PCBM, possibly even depending on the charge state of the fullerene molecule, can be observed. Hence our results suggest that fullerene inclusions in polymer/fullerene blends can be identified via Raman spectroscopy. Copyright © 2011 John Wiley & Sons, Ltd.