ArticleNature communications2024
Deuteration-enhanced neutron contrasts to probe amorphous domain sizes in organic photovoltaic bulk heterojunction films.
Article in Nature communications, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Evaporation Kinetics Engineering Suppressed Bimolecular Recombination in All-Polymer Solar Cells.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Perovskite-organic tandem solar cells with superior reverse-bias stability.Nature materials · 2026Article
- A Flexible Side-Chain Dispersant Enables Uniform Self-Assembled Monolayers for 18.67% Organic Solar Cells.Molecules (Basel, Switzerland) · 2026Article
- Microstructural Insights into Solid Dispersions: A Combined Small-Angle Neutron Scattering and Molecular Dynamics Approach.Molecular pharmaceutics · 2026Article
- Resolving Ternary Morphology for High-Performance Thickness-Insensitive Organic Solar Cells.ACS applied materials & interfaces · 2025Article
- Photocatalyst-free photochemical deuteration via H/D exchange with DNature communications · 2025Article
- Fast and reliable probabilistic reflectometry inversion with prior-amortized neural posterior estimation.Science advances · 2025Article
- Suppressed Degradation Process of PBDB-TF-T1:BTP-4F-12-Based Organic Solar Cells with Solid Additive Atums Green.ACS applied materials & interfaces · 2025Article
- Article
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Authors and funding
15 authors.
Funding
Abstract
An organic photovoltaic bulk heterojunction comprises of a mixture of donor and acceptor materials, forming a semi-crystalline thin film with both crystalline and amorphous domains. Domain sizes critically impact the device performance; however, conventional X-ray scattering techniques cannot detect the contrast between donor and acceptor materials within the amorphous intermixing regions. In this study, we employ neutron scattering and targeted deuteration of acceptor materials to enhance the scattering contrast by nearly one order of magnitude. Remarkably, the PM6:deuterated Y6 system reveals a new length scale, indicating short-range aggregation of Y6 molecules in the amorphous intermixing regions. All-atom molecular dynamics simulations confirm that this short-range aggregation is an inherent morphological advantage of Y6 which effectively assists charge extraction and suppresses charge recombination as shown by capacitance spectroscopy. Our findings uncover the amorphous nanomorphology of organic photovoltaic thin films, providing crucial insights into the morphology-driven device performance.
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