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van der Waals Solids from Self-Assembled Nanoscale Building Blocks

Cited 50 time in Web of Science Cited 55 time in Scopus
Authors

Choi, Bonnie; Yu, Jaeeun; Paley, Daniel W.; Trinh, M. Tuan; Paley, Maria V.; Karch, Jessica M.; Crowther, Andrew C.; Lee, Chul-Ho; Lalancette, Roger A.; Zhu, Xiaoyang; Kim, Philip; Steigerwald, Michael L.; Nuckolls, Colin; Roy, Xavier

Issue Date
2016-02
Publisher
American Chemical Society
Citation
Nano Letters, Vol.16 No.2, pp.1445-1449
Abstract
Traditional atomic van der Waals materials such as graphene, hexagonal boron-nitride, and transition metal dichalcogenides have received widespread attention due to the wealth of unusual physical and chemical behaviors that arise when charges, spins, and vibrations are confined to a plane. Though not as widespread as their atomic counterparts, molecule-based two-dimensional (2D) layered solids offer significant benefits; their structural flexibility will enable the development Of materials with tunable properties. Here we describe a layered van der Waals solid self-assembled from a structure-directing building block and C-60 fullerene. The resulting crystalline solid contains a corrugated monolayer of neutral fullerenes and can be mechanically exfoliated. The absorption spectrum of the bulk solid shows an optical gap of 390 +/- 40 meV that is consistent with thermal activation energy obtained from electrical transport measurement. We find that the dimensional confinement of fullerenes significantly modulates the optical and electronic properties compared to the bulk solid.
ISSN
1530-6984
URI
https://hdl.handle.net/10371/202300
DOI
https://doi.org/10.1021/acs.nanolett.5b05049
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  • College of Engineering
  • Department of Electrical and Computer Engineering
Research Area 2차원 반도체 소자 및 재료, High-Performance 2D Electronics, Low-Power 2D Electronics, 뉴로모픽 소자 및 응용기술, 저전력 소자 및 소자물리

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