Tailored Plasmons in Pentacene/Graphene Heterostructures with Interlayer Electron Transfer
Abstract
van der Waals (vdW) heterostructures, which are produced by the precise assemblies of varieties of two-dimensional (2D) materials, have demonstrated many novel properties and functionalities. Here we report a nanoplasmonic study of vdW heterostructures that were produced by depositing ordered molecular layers of pentacene on top of graphene. We find through nanoinfrared (IR) imaging that surface plasmons formed due to the collective oscillations of Dirac Fermions in graphene are highly sensitive to the adjacent pentacene layers. In particular, the plasmon wavelength declines systematically but nonlinearly with increasing pentacene thickness. Further analysis and density functional theory (DFT) calculations indicate that the observed peculiar thickness dependence is mainly due to the tunneling-type electron transfer from pentacene to graphene. Here, our work unveils a new method for tailoring graphene plasmons and deepens our understanding of the intriguing nano-optical phenomena due to interlayer couplings in novel vdW heterostructures.
- Authors:
-
- Ames Lab. and Iowa State Univ., Ames, IA (United States)
- Nanjing Univ., Nanjing (China)
- Publication Date:
- Research Org.:
- Ames Lab., Ames, IA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1561961
- Report Number(s):
- IS-J-10026
Journal ID: ISSN 1530-6984; TRN: US2000670
- Grant/Contract Number:
- 2013CBA01604; AC02-07CH11358; 61734003
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nano Letters
- Additional Journal Information:
- Journal Volume: 19; Journal Issue: 9; Journal ID: ISSN 1530-6984
- Publisher:
- American Chemical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING; graphene; pentacene; vdW heterostructures; s-SNOM; plasmons; electron transfer
Citation Formats
Hu, F., Kim, M., Zhang, Y., Luan, Y., Ho, K. M., Shi, Y., Wang, C. Z., Wang, X., and Fei, Z. Tailored Plasmons in Pentacene/Graphene Heterostructures with Interlayer Electron Transfer. United States: N. p., 2019.
Web. doi:10.1021/acs.nanolett.9b01945.
Hu, F., Kim, M., Zhang, Y., Luan, Y., Ho, K. M., Shi, Y., Wang, C. Z., Wang, X., & Fei, Z. Tailored Plasmons in Pentacene/Graphene Heterostructures with Interlayer Electron Transfer. United States. https://doi.org/10.1021/acs.nanolett.9b01945
Hu, F., Kim, M., Zhang, Y., Luan, Y., Ho, K. M., Shi, Y., Wang, C. Z., Wang, X., and Fei, Z. Fri .
"Tailored Plasmons in Pentacene/Graphene Heterostructures with Interlayer Electron Transfer". United States. https://doi.org/10.1021/acs.nanolett.9b01945. https://www.osti.gov/servlets/purl/1561961.
@article{osti_1561961,
title = {Tailored Plasmons in Pentacene/Graphene Heterostructures with Interlayer Electron Transfer},
author = {Hu, F. and Kim, M. and Zhang, Y. and Luan, Y. and Ho, K. M. and Shi, Y. and Wang, C. Z. and Wang, X. and Fei, Z.},
abstractNote = {van der Waals (vdW) heterostructures, which are produced by the precise assemblies of varieties of two-dimensional (2D) materials, have demonstrated many novel properties and functionalities. Here we report a nanoplasmonic study of vdW heterostructures that were produced by depositing ordered molecular layers of pentacene on top of graphene. We find through nanoinfrared (IR) imaging that surface plasmons formed due to the collective oscillations of Dirac Fermions in graphene are highly sensitive to the adjacent pentacene layers. In particular, the plasmon wavelength declines systematically but nonlinearly with increasing pentacene thickness. Further analysis and density functional theory (DFT) calculations indicate that the observed peculiar thickness dependence is mainly due to the tunneling-type electron transfer from pentacene to graphene. Here, our work unveils a new method for tailoring graphene plasmons and deepens our understanding of the intriguing nano-optical phenomena due to interlayer couplings in novel vdW heterostructures.},
doi = {10.1021/acs.nanolett.9b01945},
journal = {Nano Letters},
number = 9,
volume = 19,
place = {United States},
year = {Fri Aug 09 00:00:00 EDT 2019},
month = {Fri Aug 09 00:00:00 EDT 2019}
}
Web of Science
Figures / Tables:
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