Liquid-solid surface phase transformation of fluorinated fullerene on monolayer tungsten diselenide

Handle URI:
http://hdl.handle.net/10754/627408
Title:
Liquid-solid surface phase transformation of fluorinated fullerene on monolayer tungsten diselenide
Authors:
Song, Zhibo; Wang, Qixing; Li, Ming-yang; Li, Lain-Jong ( 0000-0002-4059-7783 ) ; Zheng, Yu Jie; Wang, Zhuo; Lin, Tingting; Chi, Dongzhi; Ding, Zijing; Huang, Yu Li; Wee, Andrew Thye Shen
Abstract:
Hybrid van der Waals (vdW) heterostructures constructed by the integration of organic molecules and two-dimensional (2D) transition metal dichalcogenide (TMD) materials have useful tunable properties for flexible electronic devices. Due to the chemically inert and atomically smooth nature of the TMD surface, well-defined crystalline organic films form atomically sharp interfaces facilitating optimal device performance. Here, the surface phase transformation of the supramolecular packing structure of fluorinated fullerene (C60F48) on single-layer (SL) tungsten diselenide (WSe2) is revealed by low-temperature (LT) scanning tunnelling microscopy (STM), from thermally stable liquid to solid phases as the coverage increases. Statistical analysis of the intermolecular interaction potential reveals that the repulsive dipole-dipole interaction induced by interfacial charge transfer and substrate-mediated interactions play important roles in stabilizing the liquid C60F48 phases. Theoretical calculations further suggest that the dipole moment per C60F48 molecule varies with the surface molecule density, and the liquid-solid transformation could be understood from the perspective of the thermodynamic free energy for open systems. This study offers new insights into the growth behaviour at 2D organic/TMD hybrid heterointerfaces.
KAUST Department:
Physical Sciences and Engineering (PSE) Division
Publisher:
arXiv
Issue Date:
22-Mar-2018
ARXIV:
arXiv:1803.08278
Type:
Preprint
Additional Links:
http://arxiv.org/abs/1803.08278v1; http://arxiv.org/pdf/1803.08278v1
Appears in Collections:
Other/General Submission; Physical Sciences and Engineering (PSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorSong, Zhiboen
dc.contributor.authorWang, Qixingen
dc.contributor.authorLi, Ming-yangen
dc.contributor.authorLi, Lain-Jongen
dc.contributor.authorZheng, Yu Jieen
dc.contributor.authorWang, Zhuoen
dc.contributor.authorLin, Tingtingen
dc.contributor.authorChi, Dongzhien
dc.contributor.authorDing, Zijingen
dc.contributor.authorHuang, Yu Lien
dc.contributor.authorWee, Andrew Thye Shenen
dc.date.accessioned2018-04-04T12:38:14Z-
dc.date.available2018-04-04T12:38:14Z-
dc.date.issued2018-03-22en
dc.identifier.urihttp://hdl.handle.net/10754/627408-
dc.description.abstractHybrid van der Waals (vdW) heterostructures constructed by the integration of organic molecules and two-dimensional (2D) transition metal dichalcogenide (TMD) materials have useful tunable properties for flexible electronic devices. Due to the chemically inert and atomically smooth nature of the TMD surface, well-defined crystalline organic films form atomically sharp interfaces facilitating optimal device performance. Here, the surface phase transformation of the supramolecular packing structure of fluorinated fullerene (C60F48) on single-layer (SL) tungsten diselenide (WSe2) is revealed by low-temperature (LT) scanning tunnelling microscopy (STM), from thermally stable liquid to solid phases as the coverage increases. Statistical analysis of the intermolecular interaction potential reveals that the repulsive dipole-dipole interaction induced by interfacial charge transfer and substrate-mediated interactions play important roles in stabilizing the liquid C60F48 phases. Theoretical calculations further suggest that the dipole moment per C60F48 molecule varies with the surface molecule density, and the liquid-solid transformation could be understood from the perspective of the thermodynamic free energy for open systems. This study offers new insights into the growth behaviour at 2D organic/TMD hybrid heterointerfaces.en
dc.publisherarXiven
dc.relation.urlhttp://arxiv.org/abs/1803.08278v1en
dc.relation.urlhttp://arxiv.org/pdf/1803.08278v1en
dc.rightsArchived with thanks to arXiven
dc.titleLiquid-solid surface phase transformation of fluorinated fullerene on monolayer tungsten diselenideen
dc.typePreprinten
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.eprint.versionPre-printen
dc.contributor.institutionInstitute of Materials Research & Engineering (IMRE), A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, Innovis, Singapore 138634, Singaporeen
dc.contributor.institutionDepartment of Physics, National University of Singapore, 2 Science Drive 3, Singapore 117542, Singaporeen
dc.contributor.institutionCentre for Advanced 2D Materials, National University of Singapore, Block S14, Level 6, 6 Science Drive 2, Singapore 117546, Singaporeen
dc.contributor.institutionResearch Center for Applied Sciences, Academia Sinica, Taipei 10617, Taiwanen
dc.identifier.arxividarXiv:1803.08278en
kaust.authorLi, Ming-yangen
kaust.authorLi, Lain-Jongen
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