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Showing 1–12 of 12 results
Advanced filters: Author: Moritz Riede Clear advanced filters

  • The efficiency of organic blends used for photovoltaic applications depends on their ability to convert photoexcited charges into free holes and electrons. It is now demonstrated that the lowermost energetic states formed at the donor/acceptor interface can reach conversion efficiencies close to 100%, and therefore do not behave as traps for charge carriers.

    • Koen Vandewal
    • Steve Albrecht
    • Alberto Salleo
    Research
    Nature Materials
    Volume: 13, P: 63-68

  • Fullerene acceptors are relevant for upscaling industrial production of organic solar cells. Here, authors reveal that for donor-acceptor blends with low energetic offset, charge transfer state dissociation rather than charge transfer state formation presents a bottleneck for free charge generation.

    • Anna Jungbluth
    • Eunkyung Cho
    • Moritz Riede
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-11

  • The commercialisation of organic photovoltaic technology calls for research on material degradation mechanisms. Ramirez et al. show that triplet excitons produced by back charge transfer can significantly impact the photo-stability of fullerene-based devices even in the absence of water and oxygen.

    • Ivan Ramirez
    • Alberto Privitera
    • Moritz Riede
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-10

  • The realization of organic semiconductors with simultaneous independent control of molecular energy levels and Fermi level remains a challenge. Here, the authors combine band structure engineering and molecular doping to independently tune the energy and Fermi levels in ternary organic blends.

    • Ross Warren
    • Alberto Privitera
    • Moritz K. Riede
    ResearchOpen Access
    Nature Communications
    Volume: 10, P: 1-7

  • The interconversion dynamics between charge transfer state charges and separated charges remains an unresolved issue. Here, the authors spectrally resolve those charges and report a kinetic model to reveal the charge generation, separation, and recombination mechanism in α6T:C60 systems.

    • Gareth John Moore
    • Florian Günther
    • Natalie Banerji
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-11

  • The authors demonstrate that the band structure of graphene nanoribbons is modulated by cove edges, brightening the luminescence 4-fold via emission from otherwise dark twilight states. High spectral resolution of the optical response reveals strong vibron-electron coupling

    • Bernd K. Sturdza
    • Fanmiao Kong
    • Robin J. Nicholas
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-8

  • Adducts of dimethyl sulfoxide and hydrobromic acid demonstrate efficient p-doping of various organic semiconductors and compatibility with other counterions used to improve stability and other performance parameters of organic-based optoelectronic devices.

    • Nobuya Sakai
    • Ross Warren
    • Henry J. Snaith
    Research
    Nature Materials
    Volume: 20, P: 1248-1254

  • A substantial pathway for energy loss in organic solar cells may be suppressed by engineering hybridization between non-fullerene acceptor triplet excitons and spin-triplet charge transfer excitons.

    • Alexander J. Gillett
    • Alberto Privitera
    • Richard H. Friend
    Research
    Nature
    Volume: 597, P: 666-671

  • The conversion efficiency of organic solar cells suffers from their low open-circuit voltages. Here, the authors expose a link between electron-vibrations coupling and non-radiative recombinations, derive a new limit for the efficiency of organic solar cells, and redefine their optimal optical gap.

    • Johannes Benduhn
    • Kristofer Tvingstedt
    • Koen Vandewal
    Research
    Nature Energy
    Volume: 2, P: 1-6

  • Stojanov et al. updated and internally validated a prediction model for the occurrence of post-operative shoulder stiffness following primary arthroscopic rotator cuff repair in Switzerland. Their findings support the development of further prediction models for an evidence-based and individualized decision-making in orthopedics.

    • Thomas Stojanov
    • Soheila Aghlmandi
    • Laurent Audigé
    ResearchOpen Access
    Communications Medicine
    Volume: 5, P: 1-8