Jump to main content
Jump to site search

Issue 16, 2015
Previous Article Next Article

Morphology and local electrical properties of PTB7:PC71BM blends

Author affiliations

Abstract

The power conversion efficiency of single layer organic solar cells can approach 10% with blends such as the polymer PTB7 and the fullerene derivative PC71BM. Here the detailed structure of PTB7:PC71BM blends deposited with and without addition of diiodooctane is studied by transmission electron microscopy and scanning probe microscopy. The details of bulk structure, such as the thickness of the layer covering fullerene domains and the grain structure of the film are examined. We find that fullerene-rich domains can be near the surface of the film or buried deeper, near the substrate. The local electrical properties of these blends are studied by conductive atomic force microscopy for different configurations of electrodes. Different power conversion efficiencies of blends with and without diiodooctane are explained in terms of local photoconductive properties.

Graphical abstract: Morphology and local electrical properties of PTB7:PC71BM blends

Back to tab navigation

Supplementary files

Article information


Submitted
13 Feb 2015
Accepted
12 Mar 2015
First published
12 Mar 2015

This article is Open Access

J. Mater. Chem. A, 2015,3, 8706-8714
Article type
Paper

Morphology and local electrical properties of PTB7:PC71BM blends

A. Alekseev, G. J. Hedley, A. Al-Afeef, O. A. Ageev and I. D. W. Samuel, J. Mater. Chem. A, 2015, 3, 8706
DOI: 10.1039/C5TA01224D

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material.

Reproduced material should be attributed as follows:

  • For reproduction of material from NJC:
    [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC.
  • For reproduction of material from PCCP:
    [Original citation] - Published by the PCCP Owner Societies.
  • For reproduction of material from PPS:
    [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
  • For reproduction of material from all other RSC journals:
    [Original citation] - Published by The Royal Society of Chemistry.

Information about reproducing material from RSC articles with different licences is available on our Permission Requests page.


Social activity

Search articles by author

Spotlight

Advertisements