Plasmonics Yields Efficient Electron Transport via Assembly of Shell-Insulated Au Nanoparticles

Chuanping Li; David Cahen; Ping Wang; Haijuan Li; Jie Zhang; Yongdong Jin

doi:10.1016/j.isci.2018.09.022

Plasmonics Yields Efficient Electron Transport via Assembly of Shell-Insulated Au Nanoparticles

Chuanping Li
, David Cahen
, Ping Wang
, Haijuan Li
, Jie Zhang
, Yongdong Jin

CAS - Changchun Institute of Applied Chemistry
University of Chinese Academy of Sciences
Weizmann Institute of Science

Research output: Contribution to journal › Article › peer-review

29 Scopus citations

Abstract

Junctions built from metallic nanoparticles (NPs) can circumvent the diffraction limit and combine molecular/nanoelectronics with plasmonics. However, experimental advances in plasmon-assisted electron transport at the nanoscale have been limited. We construct junctions of a robust, molecule-free, suspended film, built solely from AuNPs, capped by SiO₂ shells (Au@SiO₂), which give insulating tunneling gaps up to 3.6 nm between the NPs. Current measured across monolayers of such AuNPs shows ultra-long-range, plasmon-enabled electron transport (P-transport), beyond the range of normal electron tunneling across insulators. This finding challenges the present understanding of electron transport in such systems and opens possibilities for future combinations of plasmonics and nanoelectronics.

Original language	English
Pages (from-to)	213-221
Number of pages	9
Journal	iScience
Volume	8
DOIs	https://doi.org/10.1016/j.isci.2018.09.022
State	Published - 26 Oct 2018
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2018 The Author(s)

Funding

C.L. thanks Y. Tian (from Jilin University) for the FDTD simulation of the electric field distribution and Z.Q. Wang and X.H. Li (all from Northeast Normal University) for facilitating the temperature-dependent I-V measurement. Y.J. acknowledges support from the National Key Research and Development Program of China (Grant No. 2016YFA0201300 ), the Natural Science Foundation of China (Grant Nos. 21475125 and 21675146 ) and the Instrument Developing Project of the Chinese Academy of Sciences (Grant No. YZ201666 ). C.L. thanks Y. Tian (from Jilin University) for the FDTD simulation of the electric field distribution and Z.Q. Wang and X.H. Li (all from Northeast Normal University) for facilitating the temperature-dependent I-V measurement. Y.J. acknowledges support from the National Key Research and Development Program of China (Grant No. 2016YFA0201300), the Natural Science Foundation of China (Grant Nos.21475125 and 21675146) and the Instrument Developing Project of the Chinese Academy of Sciences (Grant No. YZ201666). Y.J. conceived and designed the project. C.L. prepared the nanomaterials and devices, conducted the structural and optical characterizations, and performed electrical measurements. C.L. P.W. H.L. J.Z. D.C. and Y.J. analyzed and discussed the data. Y.J. C.L. and D.C. wrote the paper. The authors declare no competing interests.

Funders	Funder number
National Natural Science Foundation of China	21475125, 21675146
Chinese Academy of Sciences	YZ201666
National Basic Research Program of China (973 Program)	2016YFA0201300

Keywords

Electronic Materials
Materials Science
Nanomaterials

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10.1016/j.isci.2018.09.022

Cite this

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AB - Junctions built from metallic nanoparticles (NPs) can circumvent the diffraction limit and combine molecular/nanoelectronics with plasmonics. However, experimental advances in plasmon-assisted electron transport at the nanoscale have been limited. We construct junctions of a robust, molecule-free, suspended film, built solely from AuNPs, capped by SiO2 shells (Au@SiO2), which give insulating tunneling gaps up to 3.6 nm between the NPs. Current measured across monolayers of such AuNPs shows ultra-long-range, plasmon-enabled electron transport (P-transport), beyond the range of normal electron tunneling across insulators. This finding challenges the present understanding of electron transport in such systems and opens possibilities for future combinations of plasmonics and nanoelectronics.

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Plasmonics Yields Efficient Electron Transport via Assembly of Shell-Insulated Au Nanoparticles

Abstract

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Keywords

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