Panchromatic Cross-Conjugated π-Bridge NIR Dyes for DSCs

Authors

Yanbing Zhang, University of Mississippi
Hammad Cheema, University of Mississippi
Alexander E. London, University of Southern Mississippi
Amber Morales, University of Mississippi
Jason D. Azoulay, University of Southern MississippiFollow
Jared H. Delcamp, University of MississippiFollow

Document Type

Article

Publication Date

1-8-2018

Department

Polymers and High Performance Materials

Abstract

Four organic sensitizers incorporating a cross-conjugated cyclopenta[2,1-b:3,4-b′]dithiophene (CPDT) π-bridge have been synthesized. As a result of molecular engineering, broad high energy bands and red shifted absorption maxima and onset is observed relative to a benchmark analogue (C218) using a non-cross-conjugated CPDT π-bridge. The use of a cross-conjugated bridge allows a new strategy for tuning dye energetics and introduction of increased absorption uniformity by adding additional high-energy absorption bands. These dyes show solar-to-electric conversion up to 800 nm with one derivative exceeding the performance of C218 under identical conditions.

Publication Title

Physical Chemistry Chemical Physics

Volume

20

Issue

4

First Page

2438

Last Page

2443

Recommended Citation

Zhang, Y., Cheema, H., London, A. E., Morales, A., Azoulay, J. D., Delcamp, J. H. (2018). Panchromatic Cross-Conjugated π-Bridge NIR Dyes for DSCs. Physical Chemistry Chemical Physics, 20(4), 2438-2443.
Available at: https://aquila.usm.edu/fac_pubs/15131