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Showing 1–10 of 10 results
Advanced filters: Author: Katharina Broch Clear advanced filters

  • Singlet fission is desirable for highly efficient solar cells, yet the details of the process remain elusive. Here, Broch et al. show that the changes in bulk intermolecular interactions can have little effect on the singlet fission rate in a mixture of pentacene and weakly interacting spacer molecules.

    • K. Broch
    • J. Dieterle
    • F. Schreiber
    ResearchOpen Access
    Nature Communications
    Volume: 9, P: 1-9

  • A complete understanding of singlet fission (SF) in molecular materials will enable the design of optimised optoelectronic devices. Here, the authors use vacancy control in acene-based blends to link coherent and incoherent SF pathways to energetics.

    • Clemens Zeiser
    • Chad Cruz
    • Katharina Broch
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-9

  • Measurements and simulations of several high-mobility conjugated polymers show that their charge transport properties reflect an almost complete lack of disorder in the polymers, despite their amorphous microstructures, resulting from the resilience of the planar polymer backbone conformations to side-chain disorder.

    • Deepak Venkateshvaran
    • Mark Nikolka
    • Henning Sirringhaus
    Research
    Nature
    Volume: 515, P: 384-388

  • Dynamic disorder reduces the carrier mobility in organic semiconductors (OSs) to an extent that depends on their specific electronic band structure. Here the authors study the temperature-dependent hole mobility of two structurally similar OSs and find that thermal access to transiently delocalized states enhances hole mobility in C8-DNTT-C8 compared to DNTT.

    • Samuele Giannini
    • Lucia Di Virgilio
    • David Beljonne
    Research
    Nature Materials
    Volume: 22, P: 1361-1369

  • The use of organic–inorganic metal-halide perovskites in hot-carrier devices depends on deepening the understanding of photoexcitations in these materials. Here, Price et al. use transient absorption spectroscopy to study hot-carrier distributions in CH3NH3PbI3and quantify key semiconductors parameters.

    • Michael B. Price
    • Justinas Butkus
    • Felix Deschler
    ResearchOpen Access
    Nature Communications
    Volume: 6, P: 1-8

  • Charge transport in organic diodes based on conjugated polymers is severely limited by the high water-related trap concentration and energetic disorder. Here, the authors report high-mobility trap-free charge transport in low-disorder conjugated polymers by incorporating small molecular additives.

    • Mark Nikolka
    • Katharina Broch
    • Henning Sirringhaus
    ResearchOpen Access
    Nature Communications
    Volume: 10, P: 1-9

  • Singlet fission — the conversion of one singlet exciton into two triplet excitons, could improve the efficiency of photovoltaic devices — but its mechanism is still to be fully understood. Now, in films of TIPS-tetracene, it has been shown that the formation of the triplet pair state, which has been proposed to mediate singlet fission, is ultrafast and vibronically coherent in this endothermic fission system.

    • Hannah L. Stern
    • Alexandre Cheminal
    • Richard H. Friend
    Research
    Nature Chemistry
    Volume: 9, P: 1205-1212

  • Mutations in the RNA binding protein FUS are associated with ALS. Here the authors show that in FUS knock-in mice there is a progressive increase in neuronal activity in the frontal cortex which is associated with altered synaptic gene expression.

    • Jelena Scekic-Zahirovic
    • Inmaculada Sanjuan-Ruiz
    • Luc Dupuis
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-19