2020
DOI: 10.1515/nanoph-2019-0411
|View full text |Cite
|
Sign up to set email alerts
|

Tunneling-induced broadband and tunable optical emission from plasmonic nanorod metamaterials

Abstract: We demonstrate a metamaterial platform for electrically driven broadband light emission induced by electron tunneling. Both the Fabry-Perot and waveguided modes of the metamaterial slab as well the plasmonic mode of the tunneling gap are identified as contributing to shaping the emission spectrum. This opens up an opportunity to design the spectrum and polarization of the emitted light by tuning the metamaterial modes via the geometric parameters of the nanostructure throughout the visible and near-infrared sp… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1
1

Citation Types

0
12
0

Year Published

2020
2020
2024
2024

Publication Types

Select...
6
1

Relationship

2
5

Authors

Journals

citations
Cited by 16 publications
(12 citation statements)
references
References 37 publications
(44 reference statements)
0
12
0
Order By: Relevance
“…The spectrum of the emission in this case is shaped by the metamaterial plasmonic modes, which can be engineered throughout the visible and nearinfrared ranges by tuning the metamaterial modes via the nanostructure geometric parameters. 481 In addition to the excitation of plasmons by inelastic tunneling (with an efficiency around 0.1%), during the tunneling process, the majority of electrons (∼99.9%) tunnel elastically, appearing as energetic hot electrons in the nanorod tips ( The highly efficient and confined hot-electron generation makes the tunnel junctions highly reactive and opens up opportunities for the precise activation of chemical reactions in the junctions, which can be further detected with high sensitivity by observing the light emission from the tunnel junction or tunneling current changes due to the strong dependence of the highly confined tunneling process on any changes in the junction. This was demonstrated for both hydrogen and oxygen sensing using an electrically driven metamaterial with a monolayer of poly-L-histidine as a tunnel barrier, which was placd in a gas cell.…”
Section: Molecular Plasmonics With Metamaterials For Nanochemistrymentioning
confidence: 99%
“…The spectrum of the emission in this case is shaped by the metamaterial plasmonic modes, which can be engineered throughout the visible and nearinfrared ranges by tuning the metamaterial modes via the nanostructure geometric parameters. 481 In addition to the excitation of plasmons by inelastic tunneling (with an efficiency around 0.1%), during the tunneling process, the majority of electrons (∼99.9%) tunnel elastically, appearing as energetic hot electrons in the nanorod tips ( The highly efficient and confined hot-electron generation makes the tunnel junctions highly reactive and opens up opportunities for the precise activation of chemical reactions in the junctions, which can be further detected with high sensitivity by observing the light emission from the tunnel junction or tunneling current changes due to the strong dependence of the highly confined tunneling process on any changes in the junction. This was demonstrated for both hydrogen and oxygen sensing using an electrically driven metamaterial with a monolayer of poly-L-histidine as a tunnel barrier, which was placd in a gas cell.…”
Section: Molecular Plasmonics With Metamaterials For Nanochemistrymentioning
confidence: 99%
“…Despite the fact that the Q-factors of TM 7 00 , TM 8 00 , TM 9 00 , and TM 10 00 are of the same order of magnitude ( Figure 2а), internal absorption of InGaAs due to band-to-band and intervalence band transitions leads to a significant difference in the modal loss at zero bias (see Supplementary Information Section 4). The TM 7 00 mode being closer to the bandgap energy of InGaAs suffers less absorption and could be the first to reach the threshold, but the material gain spectrum of InGaAs changes as the electron and hole concentrations increase and its maximum is blue-shifted, which gives the TM 8 00 mode an advantage over the other modes (Figure 3f).…”
Section: Spp Nanolaser Operationmentioning
confidence: 99%
“…Particularly, the plasmonic approach offers an opportunity to deal with photonic signals at the nanoscale via coupling to the freeelectron oscillations in a metal. It can provide ultracompact components for optical interconnects such as modulators, photodetectors, waveguides and incoherent and coherent nanoscale optical sources [7][8][9][10][11][12][13]. The implementation of the latter is a great challenge since a significant amount of the surface plasmon field is concentrated in the metal that results in high Joule losses.…”
Section: Introductionmentioning
confidence: 99%
“…[9] To date, most of the HMMs presented in the literature are realized by sequential growth or deposition of metal/dielectric multilayers [10] or by electrodeposition in nanoporous templates. [11,12] However, these fabrication processes lead to the generation of HMMs whose anisotropy axis lays in the out-of-plane direction and whose high wave-vector modes are buried inside the material and cannot propagate to the far field. As such, single-photon sources (SPSs) 3 placed in proximity of these materials suffer from a low photon extraction decay rate despite the sensible enhancement of their spontaneous emission.…”
Section: Introductionmentioning
confidence: 99%