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Unravelling the multilayer growth of the fullerene C60 in real time

Author

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  • S. Bommel

    (Institut für Physik, Humboldt-Universität zu Berlin
    Deutsches Elektronen-Synchrotron (DESY))

  • N. Kleppmann

    (Institut für Theoretische Physik, Technische Universität Berlin)

  • C. Weber

    (Institut für Physik, Humboldt-Universität zu Berlin)

  • H. Spranger

    (Institut für Physik, Humboldt-Universität zu Berlin)

  • P. Schäfer

    (Institut für Physik, Humboldt-Universität zu Berlin)

  • J. Novak

    (Institut für Angewandte Physik, Universität Tübingen)

  • S.V. Roth

    (Deutsches Elektronen-Synchrotron (DESY))

  • F. Schreiber

    (Institut für Angewandte Physik, Universität Tübingen)

  • S.H.L. Klapp

    (Institut für Theoretische Physik, Technische Universität Berlin)

  • S. Kowarik

    (Institut für Physik, Humboldt-Universität zu Berlin)

Abstract

Molecular semiconductors are increasingly used in devices, but understanding of elementary nanoscopic processes in molecular film growth is in its infancy. Here we use real-time in situ specular and diffuse X-ray scattering in combination with kinetic Monte Carlo simulations to study C60 nucleation and multilayer growth. We determine a self-consistent set of energy parameters describing both intra- and interlayer diffusion processes in C60 growth. This approach yields an effective Ehrlich–Schwoebel barrier of EES=110 meV, diffusion barrier of ED=540 meV and binding energy of EB=130 meV. Analysing the particle-resolved dynamics, we find that the lateral diffusion is similar to colloids, but characterized by an atom-like Schwoebel barrier. Our results contribute to a fundamental understanding of molecular growth processes in a system, which forms an important intermediate case between atoms and colloids.

Suggested Citation

  • S. Bommel & N. Kleppmann & C. Weber & H. Spranger & P. Schäfer & J. Novak & S.V. Roth & F. Schreiber & S.H.L. Klapp & S. Kowarik, 2014. "Unravelling the multilayer growth of the fullerene C60 in real time," Nature Communications, Nature, vol. 5(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms6388
    DOI: 10.1038/ncomms6388
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    Cited by:

    1. To, Tung B.T. & de Sousa, Vitor B. & Aarão Reis, Fábio D.A., 2018. "Thin film growth models with long surface diffusion lengths," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 511(C), pages 240-250.

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