Morphology Change of C60 Islands on Organic Crystals Observed by Atomic Force Microscopy

Freund, Sara; Hinaut, Antoine; Pawlak, Rémy; Liu, Shi-Xia; Decurtins, Silvio; Meyer, Ernst; Glatzel, Thilo (2016). Morphology Change of C60 Islands on Organic Crystals Observed by Atomic Force Microscopy. ACS nano, 10(6), pp. 5782-5788. American Chemical Society 10.1021/acsnano.5b07971

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Organic-organic heterojunctions are nowadays highly regarded materials for light-emitting diodes, field-effect transistors, and photovoltaic cells with the prospect of designing low-cost, flexible, and efficient electronic devices.1-3 However, the key parameter of optimized heterojunctions relies on the choice of the molecular compounds as well as on the morphology of the organic-organic interface,4 which thus requires fundamental studies. In this work, we investigated the deposition of C60 molecules at room temperature on an organic layer compound, the salt bis(benzylammonium)bis(oxalato)cupurate(II), by means of noncontact atomic force microscopy. Three-dimensional molecular islands of C60 having either triangular or hexagonal shapes are formed on the substrate following a "Volmer-Weber" type of growth. We demonstrate the dynamical reshaping of those C60 nanostructures under the local action of the AFM tip at room temperature. The dissipated energy is about 75 meV and can be interpreted as the activation energy required for this migration process.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Departement of Chemistry and Biochemistry

UniBE Contributor:

Liu, Shi-Xia and Decurtins, Silvio

Subjects:

500 Science > 570 Life sciences; biology
500 Science > 540 Chemistry

ISSN:

1936-0851

Publisher:

American Chemical Society

Language:

English

Submitter:

Silvio Decurtins

Date Deposited:

18 Jul 2016 10:43

Last Modified:

21 Jul 2016 12:15

Publisher DOI:

10.1021/acsnano.5b07971

PubMed ID:

27219352

Uncontrolled Keywords:

C60 molecule; diffusion; manipulation; noncontact atomic force microscopy; organic compound crystals

BORIS DOI:

10.7892/boris.84569

URI:

https://boris.unibe.ch/id/eprint/84569

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