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Anchorable Polymers Enabling Ultra-Thin and Robust Hole-Transporting Layers for High-Efficiency Inverted Perovskite Solar Cells.
Angew Chem Int Ed Engl
January 2025
Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Shanghai Key Laboratory of Functional Materials Chemistry, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, China.
Currently, the development of polymeric hole-transporting materials (HTMs) lags behind that of small-molecule HTMs in inverted perovskite solar cells (PSCs). A critical challenge is that conventional polymeric HTMs are incapable of forming ultra-thin and conformal coatings like self-assembly monolayers (SAMs), especially for substrates with rough surface morphology. Herein, we address this challenge by designing anchorable polymeric HTMs (CP1 to CP5).
View Article and Find Full Text PDFMolecular Design and Alignment for Ambipolar SCLC Mobility in Self-Assembled Columnar Discogens.
Small Methods
December 2024
Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali, Knowledge city, Sector 81 Manauli PO, SAS Nagar, 140306, India.
The future of next-generation electronics relies on low-cost organic semiconductors that are tailored to simultaneously provide all requisite optoelectronic properties, focusing greatly on ambipolar charge-transport and solution processability. In this regard, room-temperature discotic liquid crystals (DLCs) are potential candidates, where quasi-1D self-assembly affords a charge-transport channel along their columnar axis. This work shows a molecular design strategy by utilizing anthraquinone as the primary motif, surrounded by ester functionalized tri-alkoxy phenyl units to develop room-temperature DLCs (1.
View Article and Find Full Text PDFProduction of Ultrathin and High-Quality Nanosheet Networks via Layer-by-Layer Assembly at Liquid-Liquid Interfaces.
ACS Nano
November 2024
School of Physics, CRANN & AMBER Research Centres, Trinity College Dublin, Dublin 2, Ireland.
Solution-processable 2D materials are promising candidates for a range of printed electronics applications. Yet maximizing their potential requires solution-phase processing of nanosheets into high-quality networks with carrier mobility (μ) as close as possible to that of individual nanosheets (μ). In practice, the presence of internanosheet junctions generally limits electronic conduction, such that the ratio of junction resistance () to nanosheet resistance (), determines the network mobility via μ/μ ≈ / + 1.
View Article and Find Full Text PDFTunable Charge Transport Using Heterocycles-Flanked Alkoxyphenanthrenes for High-Performing OFETs.
ACS Omega
October 2024
Division of Organic Electronics, Department of Chemistry, Central University of Tamil Nadu, Thiruvarur 610 005, India.
Article Synopsis
- New alkoxyphenanthrenes with unique structures were created for efficient organic field-effect transistors, boasting options for high-performance electron and hole transport.* ! -
- The presence of sulfur and nitrogen in these molecules enhances their optical and electrical properties, promoting better packing and molecular interactions for improved conductivity.* ! -
- Devices made with these compounds showed impressive mobility rates for both electron and hole transport, with significant findings on how molecular structure influences charge transfer efficiency through advanced computational methods.* !
Fluoranthene imide dimers with strong isomeric effects on the charge transport properties.
Phys Chem Chem Phys
October 2024
Department of Chemical Engineering, National Taiwan University, Taipei, 10617, Taiwan.
To date, the development of high-performance n-type organic semiconductors has remained challenging due to the scarcity of highly electron-deficient π-conjugated structural units and the difficulty of controlling intermolecular packing in the thin-film state. In addition, there have been few reports on the use of dimer design to tune the optoelectronic properties of materials. Herein, we report new cyano-substituted fluoranthene imide-based dimers (F16 and F17) for small-molecule n-type organic semiconductors.
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