Issue 22, 2014

The effect of different chalcogenophenes in isoindigo-based conjugated copolymers on photovoltaic properties

Abstract

New low bandgap conjugated copolymers based on isoindigo and three different chalcogenophenes (thiophene, selenophene and tellurophene) were synthesized (denoted as PIT, PISe and PITe, respectively) to investigate the effect of different chalcogenophenes on their photovoltaic properties. PISe and PITe show lower bandgaps and deeper HOMO energy levels as compared to PIT. The solar cell device based on PISe blended with PC61BM exhibits a promising PCE of 5.72% with a JSC of 10.21 mA cm−2, while PITe shows the lowest PCE of 1.16% with the lowest JSC of 2.51 mA cm−2 because of its coarse morphology although the field-effect hole mobility of PITe is the highest due to higher crystallinity than others.

Graphical abstract: The effect of different chalcogenophenes in isoindigo-based conjugated copolymers on photovoltaic properties

Supplementary files

Article information

Article type
Paper
Submitted
05 Jun 2014
Accepted
29 Jul 2014
First published
29 Jul 2014

Polym. Chem., 2014,5, 6545-6550

Author version available

The effect of different chalcogenophenes in isoindigo-based conjugated copolymers on photovoltaic properties

E. H. Jung, S. Bae, T. W. Yoo and W. H. Jo, Polym. Chem., 2014, 5, 6545 DOI: 10.1039/C4PY00791C

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