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Showing 1–14 of 14 results
Advanced filters: Author: Sascha Feldmann Clear advanced filters

  • A high-sensitivity, broadband, transient, full-Stokes spectroscopy setup is demonstrated, which can detect quickly varying small signals from chiral emitters.

    • Antti-Pekka M. Reponen
    • Marcel Mattes
    • Sascha Feldmann
    ResearchOpen Access
    Nature
    Volume: 643, P: 675-682

  • Solution-processable semiconductors based on small molecules, polymers or halide perovskites combine sustainable manufacturing with exceptional optoelectronic properties that can be chemically tailored to achieve flexible and highly efficient optoelectronic and photonic devices. A new exciting research direction is the study of the influence of chirality on light–matter interactions in these soft materials and its exploitation for the simultaneous control of charge, spin and light. In this Viewpoint, researchers working on different types of chiral semiconductors discuss the most interesting directions in this rapidly expanding field.

    • Jeanne Crassous
    • Matthew J. Fuchter
    • Sascha Feldmann
    Reviews
    Nature Reviews Materials
    Volume: 8, P: 365-371

  • Phosphorene nanoribbons demonstrate extraordinary magnetic properties, ranging from large internal fields in films to macroscopic alignment in solution, which can be coupled to photoexcitations that localize to the magnetic edge of these ribbons.

    • Arjun Ashoka
    • Adam J. Clancy
    • Raj Pandya
    ResearchOpen Access
    Nature
    Volume: 639, P: 348-353

  • Perovskite solar cells have stability issues that prevent their widespread adoption as a photovoltaic technology. This Review explores how natural biomaterial structures have evolved to solve similar problems at the chemical, microstructural and macroscopic levels, and how these natural solutions can be applied to perovskite solar cells.

    • Tianwei Duan
    • Peijun Guo
    • Yuanyuan Zhou
    Reviews
    Nature Reviews Clean Technology
    Volume: 1, P: 638-655

  • A discrepancy exists between the low diffusion coefficients and near-unity charge collection efficiencies achieved in practical halide perovskite solar cells. Here, the authors explain this through the discovery of strong heterogeneity in vertical charge diffusivities in a 3D perovskite film.

    • Changsoon Cho
    • Sascha Feldmann
    • Neil C. Greenham
    Research
    Nature Materials
    Volume: 21, P: 1388-1395

  • Endowing chirality onto solution-processable semiconductors unlocks new bounds for their spin and optoelectronic properties. This Review discusses the synthesis, properties, characterization methods, novel light–matter interactions and applications of this exciting class of materials.

    • Zachary A. VanOrman
    • Winald R. Kitzmann
    • Sascha Feldmann
    Reviews
    Nature Reviews Chemistry
    Volume: 9, P: 208-223

  • The enantioselective functionalization of C60 is highly challenging, typically requiring complex chiral tethers or demanding chromatography. Fullerenes have now been shown to undergo Diels–Alder reactions in a chemo-, regio- and enantio-selective fashion through confinement within an enantiopure metal–organic cage functionalized with a chiral formylpyridine group.

    • Zifei Lu
    • Tanya K. Ronson
    • Jonathan R. Nitschke
    Research
    Nature Chemistry
    Volume: 15, P: 405-412

  • The role of the dielectric environment in thermally activated delayed fluorescence (TADF) is not yet fully understood. Here the authors reveal the relevance of environment–emitter interactions in gating the reverse intersystem crossing and its particular relevance in dipolar TADF emitters.

    • Alexander J. Gillett
    • Anton Pershin
    • David Beljonne
    Research
    Nature Materials
    Volume: 21, P: 1150-1157

  • Combining magnetic and semiconducting properties in a single material offers great technological potential, all the more so if these are coupled with good optical properties. Here, Neumann et al. present a Manganese doped Ruddlesden-Popper perovskite with this trifecta of attributes.

    • Timo Neumann
    • Sascha Feldmann
    • Felix Deschler
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-8

  • Diffuse X-ray scattering with femtosecond resolution shows the formation and relaxation of polaronic distortions in halide perovskites. These structural changes are also quantified and correlated to transient changes in carrier effective mass.

    • Burak Guzelturk
    • Thomas Winkler
    • Aaron M. Lindenberg
    Research
    Nature Materials
    Volume: 20, P: 618-623