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A Strategy to Design a Donor–π–Acceptor Polymeric Hole Conductor for an Efficient Perovskite Solar Cell

A Strategy to Design a Donor–π–Acceptor Polymeric Hole Conductor for an Efficient Perovskite... A strategy for developing a novel donor–π–acceptor conducting polymeric hole transport material (TTB–TTQ) based on thiophene and benzothiadiazole as an alternative to spiro‐MeOTAD is reported. The resulting polymer is highly soluble in many organic solvents and exhibits excellent film formability. The addition of lithium bis(trifluoromethanesulfonyl) imide salt and tert‐butylpyridine to TTB–TTQ results in a rough film surface with a fibril structure and improved charge transport. A perovskite solar cell with the highest power conversion efficiency (η) yet achieved in such cells, 14.1%, which is 22.6% greater than that of a device employing a spiro‐MeOTAD is demonstrated. This strategy provides a novel approach to developing solar cell materials for efficient perovskite solar cells. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Advanced Energy Materials Wiley

A Strategy to Design a Donor–π–Acceptor Polymeric Hole Conductor for an Efficient Perovskite Solar Cell

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Publisher
Wiley
Copyright
Copyright © 2015 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim
ISSN
1614-6832
eISSN
1614-6840
DOI
10.1002/aenm.201500471
Publisher site
See Article on Publisher Site

Abstract

A strategy for developing a novel donor–π–acceptor conducting polymeric hole transport material (TTB–TTQ) based on thiophene and benzothiadiazole as an alternative to spiro‐MeOTAD is reported. The resulting polymer is highly soluble in many organic solvents and exhibits excellent film formability. The addition of lithium bis(trifluoromethanesulfonyl) imide salt and tert‐butylpyridine to TTB–TTQ results in a rough film surface with a fibril structure and improved charge transport. A perovskite solar cell with the highest power conversion efficiency (η) yet achieved in such cells, 14.1%, which is 22.6% greater than that of a device employing a spiro‐MeOTAD is demonstrated. This strategy provides a novel approach to developing solar cell materials for efficient perovskite solar cells.

Journal

Advanced Energy Materials – Wiley

Published: Jul 1, 2015

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