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Showing 1–4 of 4 results
Advanced filters: Author: Sean A. Bourelle Clear advanced filters

  • Spintronic devices will require long spin lifetimes, but the effect of exciton-lattice coupling on spin lifetime in metal-halide perovskites is not well understood. Here, the authors find a 100-fold increase in the lifetime of exciton spins in a 2D perovskite by exciting with excess energy, resulting from strong coupling between excitons and optically excited phonons.

    • Sean A. Bourelle
    • Franco V. A. Camargo
    • Felix Deschler
    ResearchOpen Access
    Nature Communications
    Volume: 13, P: 1-8

  • Gate tunable and ultrabroadband third-harmonic generation can be achieved in graphene, paving the way for electrically tunable broadband frequency converters for applications in optical communications and signal processing.

    • Giancarlo Soavi
    • Gang Wang
    • Andrea C. Ferrari
    Research
    Nature Nanotechnology
    Volume: 13, P: 583-588

  • Anharmonic ultrafast structural dynamics are expected in lead halide perovskites due to their soft nature. Here Rivett et al. show that these dynamics lead to picosecond-long polarization anisotropy of photo-carriers in several halide perovskites, orders of magnitude slower than in conventional semiconductors.

    • Jasmine P. H. Rivett
    • Liang Z. Tan
    • Felix Deschler
    ResearchOpen Access
    Nature Communications
    Volume: 9, 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