Quantitative description of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mtext>C</mml:mtext><mml:mrow><mml:mn>60</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>diffusion on an insulating surface

Loske, Felix; Lübbe, Jannis; Schütte, Jens; Reichling, Michael; Kühnle, Angelika

doi:10.1103/physrevb.82.155428

Cited by 37 publications

(32 citation statements)

References 52 publications

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“…30 From the kinetic-rate equations that describe atom nucleation and growth behavior, a relationship between bonding energy, diffusion barrier, and island density can be established. This method has been used to describe C 60 diffusion on insulating substrate 31 and pentacene film aggregation. 32 It is conceivable that this method can also be applied to study supramolecular systems, which may enable us to obtain the information of the energies that control the supramolecular self-assembly.…”

Section: Introductionmentioning

confidence: 99%

Combined scanning tunneling microscopy and kinetic Monte Carlo study on kinetics of Cu-coordinated pyridyl-porphyrin supramolecular self-assembly on a Au(111) surface

Lin

2011

Phys. Rev. B

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We have studied the kinetics of Cu-coordinated pyridyl-porphyrin supramolecular self-assembly on Au(111) using scanning tunneling microscopy (STM) through evaluating the island density variation as a function of substrate temperature and molecular deposition rate. We analyzed the experimental data using the classical nucleation theory and derived a molecular diffusion barrier of 0.68 ± 0.06 eV, a pyridyl-Cu bonding energy of 0.20 ± 0.09 eV, and a critical nucleus size of three. These results are confirmed by kinetic Monte Carlo (KMC) simulations. We also studied the postnucleation phenomena and revealed that below 373 K unstable islands (with sizes equal or smaller than the critical nucleus size) were formed upon the deposition and dissolved subsequently.

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Section: Introductionmentioning

confidence: 99%

Combined scanning tunneling microscopy and kinetic Monte Carlo study on kinetics of Cu-coordinated pyridyl-porphyrin supramolecular self-assembly on a Au(111) surface

Lin

2011

Phys. Rev. B

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“…This behaviour is similar to C 60 adsorbed on ionic crystals. [34][35][36][37][38][39]44 However, in contrast to C 60 /ionic crystals, C 60 islands on BNL extend rather in height than in width (approximately 10 times narrower than on ionic crystals). Therefore, the growth is governed by a "Volmer-Weber-like" growth mode and suggests a weaker molecule/surface interaction on BNL than on bulk insulators.…”

Section: Resultsmentioning

confidence: 97%

“…[25][26][27] At room temperature (RT), two dimensional C 60 layers have been observed on metals [28][29][30] and semiconductors [31][32][33] while large three dimensional molecular islands or clusters have been revealed on ionic crystals. [34][35][36][37][38][39] Additionally, the controlled manipulation of C 60 molecules has also been demonstrated through the action of a SPM tip as single molecules [40][41][42][43] or as entire islands. 44 In the present work, we characterize the adsorption of the C 60 molecules on the organic lay- 20 The van der Walls diameter of one C 60 molecule is ∼ 1 nm and is close to 2c.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2016

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Organic-organic heterojunctions are nowadays highly regarded materials for lightemitting 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 C 60 molecules at room temperature on an organic layer compound, the salt bis(benzylammonium)bis(oxalato)-cupurate(II), by means of non-contact atomic force microscopy (nc-AFM). Threedimensional molecular islands of C 60 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 C 60 nano-structures 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.1

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“…13,15) Second, we investigated the molecular structures after sequential deposition of PTCDI followed by C 60 and vice versa. Finally, we investigated the structures obtained when depositing PTCDI and C 60 molecules simultaneously.…”

Section: Resultsmentioning

confidence: 99%

“…While PTCDI is known to arrange into ordered, needle-shaped islands on NaCl(001), 14) C 60 molecules form unusual islands with an aspect ratio close to unity. 12,15) Structures formed by coadsorption have, however, not yet been explored on an insulating surface.…”

Section: Introductionmentioning

confidence: 99%

Deposition Sequence Determines Morphology of C₆₀ and 3,4,9,10-Perylenetetracarboxylic Diimide Islands on CaF₂(111)

Loske

Reichling

Kühnle

2011

Jpn. J. Appl. Phys.

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The coadsorption of C 60 and 3,4,9,10-perylenetetracarboxylic diimide (PTCDI) molecules on atomically flat terraces of the CaF 2 (111) surface is studied under ultra-high vacuum conditions using non-contact atomic force microscopy (NC-AFM). Deposition of PTCDI molecules on CaF 2 (111) yields needle-shaped, molecularly well-ordered crystals. Upon following deposition of C 60 molecules, the PTCDI islands are completely covered by C 60 . For the opposite deposition order, the initially grown C 60 islands are not covered by PTCDI molecules, instead, most of the PTCDI molecules condense in pure islands, while only few PTCDI molecules nucleate at the edges of previously grown C 60 islands. Simultaneous deposition of both molecules results in an intermixed phase with yet another island morphology. The observed fundamental differences in island morphology suggest that different dewetting barriers are involved in the formation process. #

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Quantitative description ofC60diffusion on an insulating surface

Cited by 37 publications

References 52 publications

Combined scanning tunneling microscopy and kinetic Monte Carlo study on kinetics of Cu-coordinated pyridyl-porphyrin supramolecular self-assembly on a Au(111) surface

Combined scanning tunneling microscopy and kinetic Monte Carlo study on kinetics of Cu-coordinated pyridyl-porphyrin supramolecular self-assembly on a Au(111) surface

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

Deposition Sequence Determines Morphology of C₆₀ and 3,4,9,10-Perylenetetracarboxylic Diimide Islands on CaF₂(111)

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Quantitative description ofC60diffusion on an insulating surface

Cited by 37 publications

References 52 publications

Combined scanning tunneling microscopy and kinetic Monte Carlo study on kinetics of Cu-coordinated pyridyl-porphyrin supramolecular self-assembly on a Au(111) surface

Combined scanning tunneling microscopy and kinetic Monte Carlo study on kinetics of Cu-coordinated pyridyl-porphyrin supramolecular self-assembly on a Au(111) surface

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

Deposition Sequence Determines Morphology of C60 and 3,4,9,10-Perylenetetracarboxylic Diimide Islands on CaF2(111)

Contact Info

Product

Resources

About

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

Deposition Sequence Determines Morphology of C₆₀ and 3,4,9,10-Perylenetetracarboxylic Diimide Islands on CaF₂(111)