Organic molecules in materials science

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  • Research | | open

    The performance of organic semiconductor devices depends heavily on molecular parameters. Here, Schwarze et al. point out that the molecular quadrupole moment largely influences device energy levels and show how quadrupole moments can reduce the energy barrier for charge generation in solar cells.

    • Martin Schwarze
    • , Karl Sebastian Schellhammer
    • , Katrin Ortstein
    • , Johannes Benduhn
    • , Christopher Gaul
    • , Alexander Hinderhofer
    • , Lorena Perdigón Toro
    • , Reinhard Scholz
    • , Jonas Kublitski
    • , Steffen Roland
    • , Matthias Lau
    • , Carl Poelking
    • , Denis Andrienko
    • , Gianaurelio Cuniberti
    • , Frank Schreiber
    • , Dieter Neher
    • , Koen Vandewal
    • , Frank Ortmann
    •  & Karl Leo
  • Research |

    Scanning electron nanobeam diffraction is used to monitor the morphology of organic thin films with nanometre resolution, revealing information on the arrangement of crystalline domains useful for structure–property relationship understanding.

    • Ouliana Panova
    • , Colin Ophus
    • , Christopher J. Takacs
    • , Karen C. Bustillo
    • , Luke Balhorn
    • , Alberto Salleo
    • , Nitash Balsara
    •  & Andrew M. Minor
  • Research |

    Material depletion and accumulation at the crystallization front of organic semiconductors films induce the formation of large-area regular patterns, with a periodicity relevant to optoelectronic applications in the visible and near-infrared range.

    • John S. Bangsund
    • , Thomas R. Fielitz
    • , Trevor J. Steiner
    • , Kaicheng Shi
    • , Jack R. Van Sambeek
    • , Catherine P. Clark
    •  & Russell J. Holmes
    Nature Materials 18, 725-731
  • Research |

    Porous molecular crystals are easy to fabricate but thought to have limited stability as they are bound by non-covalent interactions. Here, a porous crystal composed of C60 and phthalocyanine is demonstrated with stability to heat, acid, base and high pressures.

    • C. Grazia Bezzu
    • , Luke A. Burt
    • , Charlie J. McMonagle
    • , Stephen A. Moggach
    • , Benson M. Kariuki
    • , David R. Allan
    • , Mark Warren
    •  & Neil B. McKeown
    Nature Materials 18, 740-745
  • Research | | open

    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
    • , John Armitage
    • , David Hanifi
    • , Peer J. Nowack
    • , Deepak Venkateshvaran
    • , Aditya Sadhanala
    • , Jan Saska
    • , Mark Mascal
    • , Seok-Heon Jung
    • , Jin‐Kyun Lee
    • , Iain McCulloch
    • , Alberto Salleo
    •  & Henning Sirringhaus
  • Research | | open

    The elimination of specific contaminants from high concentrations of competitors poses a significant challenge. Here the authors find that modifying the local environment of the direct contact site alters the interaction of a pyridinium-based anion nanotrap with pertechnetate.

    • Qi Sun
    • , Lin Zhu
    • , Briana Aguila
    • , Praveen K. Thallapally
    • , Chao Xu
    • , Jing Chen
    • , Shuao Wang
    • , David Rogers
    •  & Shengqian Ma

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