Publication date: 11th March 2026
In recent years, the A-DA′D-A acceptor architecture, represented by Y6[1], has established a fundamental molecular design framework for low energetic disorder non-fullerene acceptors and enabled rapid efficiency advances in organic solar cells (OSCs). To date, single-junction OSCs based on this class of small-molecule acceptors have achieved power conversion efficiencies exceeding 20%. Despite these achievements, device operational stability remains one of the most critical challenges.
To address this issue, A-DA′D-A type acceptors (A) were employed as modular precursors, and two A units were covalently coupled through functionalized π-bridges to construct A–π–A type quasi-macromolecular acceptors with defined molecular weights (>3.5 kDa)[2]. Systematic molecular weight enlargement modulates the thermal and morphological properties of the materials, leading to an elevated glass transition temperature, suppressed thermodynamic relaxation in blend films, and reduced voltage losses, enabling stable OSCs with efficiencies exceeding 19% without performance degradation. Furthermore, a conjugated cyclic quasi-macromolecular acceptor (RCM) with multiple D-A interactions was constructed to suppress molecular vibrations and structural disorder. Owing to its rigid cyclic topology, RCM exhibits a thermal decomposition temperature approaching 400 °C, and devices retain over 92% of their initial efficiency after heating at 80 °C for 600 h[3,4]. Collectively, this series of quasi-macromolecular acceptors establishes a coherent molecular design strategy and material platform for achieving high-efficiency and long-term stable OSCs.
nanoGe is a prestigious brand of successful science conferences that are developed along the year in different areas of the world since 2009. Our worldwide conferences cover cutting-edge materials topics like perovskite solar cells, photovoltaics, optoelectronics, solar fuel conversion, surface science, catalysis and two-dimensional materials, among many others.
Previously nanoGe Spring Meeting (NSM) and nanoGe Fall Meeting (NFM), MATSUS is a multiple symposia conference focused on a broad set of topics of advanced materials preparation, their fundamental properties, and their applications, in fields such as renewable energy, photovoltaics, lighting, semiconductor quantum dots, 2-D materials synthesis, charge carriers dynamics, microscopy and spectroscopy semiconductors fundamentals, etc.
International Conference on Hybrid and Organic Photovoltaics
International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.
Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics
The main topics of the Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP) are discussed every year in Asia-Pacific for gathering the recent advances in the fields of material preparation, modeling and fabrication of perovskite and hybrid and organic materials. Photovoltaic devices are analyzed from fundamental physics and materials properties to a broad set of applications. The conference also covers the developments of perovskite optoelectronics, including light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.
The International Conference on Perovskite Thin Film Photovoltaics Perovskite Photonics and Optoelectronics (NIPHO) is the best place to hear the latest developments in perovskite solar cells as well as on recent advances in the fields of perovskite light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.