Issue 41, 2012

Effect of thermal annealing on exciton diffusion in a diketopyrrolopyrrole derivative

Abstract

We show that the method we have developed for measuring the singlet exciton diffusion length in blends with [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) can be applied not only to polymeric materials, but also to small molecule organic semiconductors. Small organic molecules have a large potential for molecular re-organization upon thermal annealing. Here we show that the exciton diffusion length is decreased upon annealing from 9 to 3 nm in a thin film of a diketopyrrolopyrrole derivative. Such a variation is attributed to exciton delocalization effects in the crystalline domains that are formed during the annealing process as well as to the exciton quenching at grain boundaries.

Graphical abstract: Effect of thermal annealing on exciton diffusion in a diketopyrrolopyrrole derivative

Supplementary files

Article information

Article type
Paper
Submitted
28 Apr 2012
Accepted
13 Jun 2012
First published
13 Jun 2012

Phys. Chem. Chem. Phys., 2012,14, 14196-14201

Effect of thermal annealing on exciton diffusion in a diketopyrrolopyrrole derivative

O. V. Mikhnenko, J. Lin, Y. Shu, J. E. Anthony, P. W. M. Blom, T. Nguyen and M. A. Loi, Phys. Chem. Chem. Phys., 2012, 14, 14196 DOI: 10.1039/C2CP41359K

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements