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Quinoidal Porphyrinoids as High-Performance Electron Acceptors for Organic Solar Cells: Design, Photophysics, and
Rubén Caballero1, Fernando Langa1, Rahul Singhal2
1Instituto de Nanociencia Nanotecnología y Materiales Moleculares (INAMOL), Universidad de Castilla-La Mancha, Toledo 45071, Spain.
ACS Applied Materials & Interfaces
|July 2, 2026
Summary
Quinoidal porphyrinoids show promise as electron acceptors in organic solar cells. A novel nickel-based quinoidal porphyrinoid (NiQP) achieved a 12.51% power conversion efficiency after solvent vapor annealing.
Area of Science:
- Materials Science
- Organic Electronics
- Photovoltaics
Background:
- Quinoidal porphyrinoids offer excellent electron-accepting properties due to their structure.
- Their potential in organic solar cells (OSCs) was previously unexplored.
Purpose of the Study:
- To design and synthesize a nickel-based quinoidal porphyrinoid (NiQP).
- To evaluate NiQP as an n-type acceptor in bulk heterojunction OSCs.
Main Methods:
- Synthesis of NiQP and fabrication of PM6:NiQP based OSCs.
- Characterization using photophysical and electrical analyses.
- Optimization via solvent vapor annealing (SVA).
Main Results:
- NiQP exhibits broad absorption and a 1.44 eV bandgap, complementing PM6.
- PM6:NiQP devices achieved 12.51% power conversion efficiency after SVA.
- SVA improved morphology, exciton dynamics, and reduced recombination losses.
Conclusions:
- Quinoidal porphyrinoids are viable electron acceptors for OSCs.
- Molecular design and processing strategies are crucial for next-generation OSCs.
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