A5089383893- Conducting polymers and applications
- Organic Electronics and Photovoltaics
- Perovskite Materials and Applications
- Advanced Sensor and Energy Harvesting Materials
- Catalysis and Oxidation Reactions
- Force Microscopy Techniques and Applications
- Polydiacetylene-based materials and applications
- Organic Light-Emitting Diodes Research
- Semiconductor materials and devices
- Material Dynamics and Properties
- Ionic liquids properties and applications
- Thin-Film Transistor Technologies
- Molecular Junctions and Nanostructures
- Semiconductor Lasers and Optical Devices
- Zeolite Catalysis and Synthesis
- Silk-based biomaterials and applications
- Chalcogenide Semiconductor Thin Films
- Liquid Crystal Research Advancements
- Luminescence and Fluorescent Materials
- Photoreceptor and optogenetics research
- Advanced Physical and Chemical Molecular Interactions
- Polymer composites and self-healing
- Synthesis and Properties of Aromatic Compounds
- thermodynamics and calorimetric analyses
- Surface Modification and Superhydrophobicity
Chalmers University of Technology
2018-2024
Abstract The power conversion efficiency of ternary organic solar cells (TOSCs), consisting one host binary blend and guest component, remains limited by large voltage losses. fundamental understanding the open-circuit ( V OC ) in TOSCs is controversial, limiting rational design component. In this study, we systematically investigate how component affects radiative non-radiative related parts a series using detailed balanced principle. We highlight that thermal population charge-transfer...
Organic solar cells are thought to suffer from poor thermal stability of the active layer nanostructure, a common belief that is based on extensive work has been carried out fullerene-based systems. We show widely studied non-fullerene acceptor, indacenodithienothiophene-based acceptor ITIC, crystallizes in profoundly different way as compared fullerenes. Although fullerenes frozen below glass-transition temperature Tg photovoltaic blend, ITIC can undergo glass-crystal transition...
Non-fullerene based organic solar cells display a high initial power conversion efficiency but continue to suffer from poor thermal stability, especially in case of devices with thick active layers. Mixing five structurally similar acceptors electron affinities, and blending donor polymer is explored, yielding up 17.6%. The hexanary device performance unaffected by annealing the bulk-heterojunction layer for at least 23 days 130 °C dark an inert atmosphere. Moreover, blends offer degree...
Abstract Textiles are a promising base material for flexible and wearable electronic applications such as sensors, actuators, energy harvesters. An essential component in textiles (e‐textiles) is electrically conducting yarns. Here, continuous dyeing process presented to convert an off‐the‐shelf silk sewing thread into wash wear resistant functional with conductivity of about 70 S cm −1 ; record high value coated aqueous ink based on the polymer:polyelectrolyte complex...
Abstract While photovoltaic blends based on non‐fullerene acceptors are touted for their thermal stability, this type of acceptor tends to crystallize, which can result in a gradual decrease performance and affects the reproducibility devices. Two halogenated indacenodithienothiophene‐based that readily co‐crystallize upon mixing studied, indicates use an mixture alone does not guarantee formation disordered mixture. The addition donor polymer suppresses crystallization, results fine‐grained...
Doping of organic semiconductors is a powerful tool to optimize the performance various (opto)electronic and bioelectronic devices. Despite recent advances, low thermal stability electronic properties doped polymers still represents significant obstacle implementing these materials into practical applications. Hence, development conducting with excellent long-term at elevated temperatures highly desirable. Here, we report on sequential doping ladder-type polymer...
Molecular doping of a polythiophene with oligoethylene glycol side chains is found to strongly modulate not only the electrical but also mechanical properties polymer.
Abstract Liquid chromophores constitute a rare but intriguing class of molecules that are in high demand for the design luminescent inks, liquid semiconductors, and solar energy storage materials. The most common way to achieve involves introduction long alkyl chains, which, however, significantly reduces chromophore density. Here, strategy is presented allows preparation with minimal increase molecular weight, using important perylenes as an example. Two synergistic effects harnessed: (1)...
Poly(indacenodithiophene-<italic>alt</italic>-benzothiadiazole) with different side chains and molecular weight is made using two pathways in which all C–C coupling steps are achieved by C–H activation, the products comprehensively investigated.
The morphology of films containing photoactive materials is crucial for the performance solid-state dye applications. Organic dyes tend to crystallize due their usually planar molecular structure and resulting intermolecular interactions. This leads inhomogeneous with crystalline, aggregated, amorphous regions, decreasing device efficiency complicating spectral analysis. Improving glass-forming ability organic therefore presents a major challenge Here, we present guideline create glasses...
The interplay between the nanostructure of a doped polythiophene with oligoether side chains and its electrical as well mechanical properties is investigated.
Mixtures of similar molecules can display an ultralow fragility, which facilitates the design strong organic glass formers.
The formation of photoinduced traps resulting in the loss electron mobility deteriorates performance organic solar cells under continuous light soaking. genesis these mechanisms is elucidated by examining structural stability halogenated ITIC derivative films and phase behavior respective binary systems blending with donor polymer PBDBT‐2F. Under constant illumination, ITIC‐4Cl found to maintain its integrity, whereas fluorine on peripheral moieties ITIC‐4F undergoes chemical substitution...