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Showing 1–10 of 10 results
Advanced filters: Author: Dmitry N. Dirin Clear advanced filters

  • Greatly enhanced light absorption is reported in large perovskite quantum dots by realizing a transition with a giant oscillator strength at the optical bandgap.

    • Simon C. Boehme
    • Tan P. T. Nguyen
    • Gabriele Rainò
    ResearchOpen Access
    Nature Photonics
    Volume: 19, P: 864-870

  • Colloidal perovskite quantum dots hold promise for polaritonic devices with strong excitonic confinement. Here the authors report the observation of room-temperature cavity exciton-polariton condensation in a perovskite-based quantum dot solid, opening the door towards quantum and photonics applications.

    • Ioannis Georgakilas
    • David Tiede
    • Thilo Stöferle
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-8

  • Phospholipids enhance the structural and colloidal integrity of hybrid organic–inorganic lead halide perovskites and lead-free metal halide nanocrystals, which then exhibit enhanced robustness and optical properties.

    • Viktoriia Morad
    • Andriy Stelmakh
    • Maksym V. Kovalenko
    ResearchOpen Access
    Nature
    Volume: 626, P: 542-548

  • Excitonic single-photon superradiance is reported in individual perovskite quantum dots with a sub-100 ps radiative decay time, almost as short as the reported exciton coherence time.

    • Chenglian Zhu
    • Simon C. Boehme
    • Gabriele Rainò
    ResearchOpen Access
    Nature
    Volume: 626, P: 535-541

  • Despite remarkable optical properties in lead halide perovskites, spin control in these materials is largely unexplored. Herein Belykh et al. study the coherent spin dynamics of electrons and holes in cesium lead bromide perovskites, and evidence interaction of electron and lattice nuclear spins.

    • Vasilii V. Belykh
    • Dmitri R. Yakovlev
    • Manfred Bayer
    ResearchOpen Access
    Nature Communications
    Volume: 10, P: 1-6

  • X-ray scattering and density functional theory calculations reveal that ligand-induced tensile stress can distort the rock-salt structure of small PbS and PbSe colloidal quantum dots, creating a Pb-deficient core surrounded by a Pb-enriched shell.

    • Federica Bertolotti
    • Dmitry N. Dirin
    • Norberto Masciocchi
    Research
    Nature Materials
    Volume: 15, P: 987-994

  • Solution-grown single crystals (SCs) of semiconducting methylammonium lead halide perovskites are promising materials for full-colour imaging. Here we show one-pixel photodetector prototype, constructed by stacking three layers of blue-, green- and red-sensitive MAPbCl3, MAPbBr3 and MAPb(Br/I)3 crystals, respectively. This layered structure concept has several advantages: imparting a two- to three-fold reduction in the number of required pixels, three times more efficient light utilization (and thus higher sensitivity) than common Bayer filters scheme, colour moiré suppression and no need for de-mosaic image processing. In addition, the direct band gap structure of perovskites results in optical absorption that is several orders of magnitude greater than silicon.

    • Sergii Yakunin
    • Yevhen Shynkarenko
    • Maksym V Kovalenko
    ResearchOpen Access
    NPG Asia Materials
    Volume: 9, P: e431