Improved light harvesting <i>via</i> energy transfer within a benzothiadiazole-based antenna–sensitizer dyad for dye-sensitized solar cells
We describe the design, synthesis and application in dye-sensitized solar cells (DSSCs) of a fully organic dyad consisting of a visible light-harvesting D-A-π-A dye covalently linked to a small antenna that can absorb higher energy photons. Thanks to its precise molecular design, not previously applied in DSSCs, the dyad showed an excellent overlap between the antenna emission spectrum and the dye absorption spectrum, providing a high energy transfer efficiency of 88%, which is among the best reported for such systems. Cells featuring the dyad as a sensitizer showed increased light-harvesting efficiency compared to those built with a reference dye without the antenna, resulting in a 35% higher average power conversion efficiency.
Authors
- Adalgisa Sinicropi (ORCID: https://orcid.org/0000-0001-5605-6482)
- Alessio Dessì (ORCID: https://orcid.org/0000-0002-2813-2369)
- Gianna Reginato (ORCID: https://orcid.org/0000-0002-7712-3426)
- Carmen Coppola (ORCID: https://orcid.org/0000-0002-8050-7615)
- Alessandro Mordini (ORCID: https://orcid.org/0000-0002-1055-0976)
- Gregorio Bottaro (ORCID: https://orcid.org/0000-0001-6196-8638)
- Lorenzo Zani (ORCID: https://orcid.org/0000-0003-0621-2648)
- Lidia Armelao (ORCID: https://orcid.org/0000-0001-5162-3695)
- Daniele Franchi (ORCID: https://orcid.org/0000-0003-2811-247X)
- Rossella Infantino (ORCID: https://orcid.org/0000-0001-7975-2034)
- Elena Ermini (ORCID: https://orcid.org/0000-0001-6506-5049)
- Massimo Calamante (ORCID: https://orcid.org/0000-0003-3194-6395)
- Irene Motta (ORCID: https://orcid.org/0009-0008-2191-5361)
Institutions
- University of Siena (IT)
- University of Padua (IT)
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase (IT)
- Institute of Condensed Matter Chemistry and Technologies for Energy (IT)
- Institute for the Chemistry of OrganoMetallic Compounds (IT)
- National Research Council (IT)
- University of Florence (IT)
Publication Details
- Journal
- Chemical Communications
- Published
- 2025-01-01
- DOI
- https://doi.org/10.1039/d5cc02692j
- Citations
- 2
- Primary Topic
- TiO2 Photocatalysis and Solar Cells
- Type
- article
- Field-Weighted Citation Impact
- 0.73
Funders
- Consiglio Nazionale delle Ricerche
- Ministero dell'Ambiente e della Tutela del Territorio e del Mare