ArticleNational science review2025
Vacuum-assisted vertical component distribution in pseudo-bulk heterojunctions: a pathway to high-performance and stable organic solar cells.
Article in National science review, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed.
- Chalcogen heteroatom engineering of solid additives with optimized excited-state properties enables the development of high-performance organic solar cells.Chemical science · 2026Article
- Molecular navigation strategy enables fibrillar self-assembly for efficient as-cast organic solar cells.Nature communications · 2026Article
- Conformational entropy tuning in nonfused-ring electron acceptors for low-cost and record-efficiency organic solar cells.National science review · 2026Article
- Towards optimal morphology in organic solar cells?National science review · 2026Article
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12 authors.
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Abstract
Precise control over the vertical component distribution and molecular packing within the photoactive layer is paramount for achieving high-performance organic solar cells (OSCs). However, optimizing these parameters in sequentially deposited pseudo-bulk heterojunction (p-BHJ) architecture remains challenging, often limited by inefficient self-assembly of organic semiconductors. In this work, a post-treatment combining vacuum and thermal annealing (VTA) is adopted. A range of morphological measurements demonstrate that compared with the traditional thermal annealing (TA) treatment, VTA can accelerate solvent evaporation, promoting the crystallization of acceptor at the top surface and inhibiting excessive intermixing between donor and acceptor, and therefore leads to a more stratified p-i-n configuration with interpenetrated donor-acceptor networks. This morphology modulation enhances carrier mobility and suppresses charge recombination, culminating in a champion power conversion efficiency (PCE) of 20.5% for binary OSCs. Furthermore, due to the enhanced crystallinity and more compact molecular packing, the optimized film also exhibits exceptional photo and morphological stability, achieving a
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