Panchromatic Cross-Conjugated π-Bridge NIR Dyes for DSCs
Polymers and High Performance Materials
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.
Physical Chemistry Chemical Physics
London, A. E.,
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