Pyridine End-Capped Polymer to Stabilize Organic Nanoparticle Dispersions for Solar Cell Fabrication through Reversible Pyridinium Salt Formation
Sonam Saxena, Philipp Marlow, Jegadesan Subbiah, Alexander Colsmann, Wallace WH Wong, David J Jones
ACS APPLIED MATERIALS & INTERFACES | AMER CHEMICAL SOC | Published : 2021
Bulk-heterojunction nanoparticle dispersions in water or alcohol can be employed as eco-friendly inks for the fabrication of organic solar cells by printing or coating. However, one major drawback is the need for stabilizing surfactants, which facilitate nanoparticle formation but later hamper device performance. When surfactant-free dispersions are formulated, a strong limitation is imposed by the dispersion concentration due to the tendency of nanoparticles to aggregate. In this work, pyridine end-capped poly(3-hexylthiophene) (P3HT-Py) is synthesized and included as an additive for the stabilization of P3HT:indene-C60 bis-adduct (ICBA) nanoparticle dispersions. In the presence of acetic a..View full abstract
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Awarded by German Federal Ministry for Education and Research
Awarded by ARC Centre of Excellence in Exciton Science
This work was made possible by the support from the Australian Renewable Energy Agency (ARENA) which funds the project grants within the Australian Centre for Advanced Photovoltaics (ACAP). PM and AC thank the German Federal Ministry for Education and Research for support under contract 03EK3571 (project TAURUS 2). Extending thanks to Frank Caruso for allowing us to use the Zetasizer for NP characterization. WWHW is supported by the ARC Centre of Excellence in Exciton Science (CE170100026).