Optoelectronic tuning of plasmon resonances via optically modulated hot electrons
© The Author(s) 2023. Published by Oxford University Press on behalf of China Science Publishing & Media Ltd..
Fast optical modulation of nanoplasmonics is fundamental for on-chip integration of all-optical devices. Although various strategies have been proposed for dynamic modulation of surface plasmons, critical issues of device compatibility and extremely low efficiency in the visible spectrum hamper the application of optoplasmonic nanochips. Here we establish an optoplasmonic system based on AuCu2-xS hybrid core-shell nanoparticles. The optical excitation of hot electrons and their charge transfer to the semiconductor coating (Cu2-xS) lead to lowered electron density of Au, which results in the red shift of the localized surface plasmon resonance. The hot electrons can also transport through the Cu2-xS layer to the metal substrate, which increases the conductance of the nanogap. As such, the coupled gap plasmon blue-shifts with a magnitude of up to ∼15 nm, depending on the excitation power and the thickness of the coatings, which agrees with numerical simulations. All of this optoelectronic tuning process is highly reversible, controllable and fast with a modulated laser beam, which is highly compatible and sufficiently useful for on-chip integration of nanophotonic devices.
| Medienart: |
E-Artikel |
|---|
| Erscheinungsjahr: |
2024 |
|---|---|
| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:11 |
|---|---|
| Enthalten in: |
National science review - 11(2024), 5 vom: 16. Apr., Seite nwad280 |
| Sprache: |
Englisch |
|---|
| Beteiligte Personen: |
Yao, Jiacheng [VerfasserIn] |
|---|
| Links: |
|---|
| Themen: |
Circuit model |
|---|
| Anmerkungen: |
Date Revised 06.04.2024 published: Electronic-eCollection Citation Status PubMed-not-MEDLINE |
|---|
| doi: |
10.1093/nsr/nwad280 |
|---|
| funding: |
|
|---|---|
| Förderinstitution / Projekttitel: |
|
| PPN (Katalog-ID): |
NLM370670744 |
|---|
| LEADER | 01000caa a22002652 4500 | ||
|---|---|---|---|
| 001 | NLM370670744 | ||
| 003 | DE-627 | ||
| 005 | 20240406232659.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 240405s2024 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1093/nsr/nwad280 |2 doi | |
| 028 | 5 | 2 | |a pubmed24n1367.xml |
| 035 | |a (DE-627)NLM370670744 | ||
| 035 | |a (NLM)38577663 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
| 041 | |a eng | ||
| 100 | 1 | |a Yao, Jiacheng |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Optoelectronic tuning of plasmon resonances via optically modulated hot electrons |
| 264 | 1 | |c 2024 | |
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a ƒaComputermedien |b c |2 rdamedia | ||
| 338 | |a ƒa Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Date Revised 06.04.2024 | ||
| 500 | |a published: Electronic-eCollection | ||
| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a © The Author(s) 2023. Published by Oxford University Press on behalf of China Science Publishing & Media Ltd. | ||
| 520 | |a Fast optical modulation of nanoplasmonics is fundamental for on-chip integration of all-optical devices. Although various strategies have been proposed for dynamic modulation of surface plasmons, critical issues of device compatibility and extremely low efficiency in the visible spectrum hamper the application of optoplasmonic nanochips. Here we establish an optoplasmonic system based on AuCu2-xS hybrid core-shell nanoparticles. The optical excitation of hot electrons and their charge transfer to the semiconductor coating (Cu2-xS) lead to lowered electron density of Au, which results in the red shift of the localized surface plasmon resonance. The hot electrons can also transport through the Cu2-xS layer to the metal substrate, which increases the conductance of the nanogap. As such, the coupled gap plasmon blue-shifts with a magnitude of up to ∼15 nm, depending on the excitation power and the thickness of the coatings, which agrees with numerical simulations. All of this optoelectronic tuning process is highly reversible, controllable and fast with a modulated laser beam, which is highly compatible and sufficiently useful for on-chip integration of nanophotonic devices | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a NPoM | |
| 650 | 4 | |a circuit model | |
| 650 | 4 | |a hot carriers | |
| 650 | 4 | |a optoplasmonics | |
| 650 | 4 | |a plasmon switching | |
| 700 | 1 | |a Wang, Cheng |e verfasserin |4 aut | |
| 700 | 1 | |a Zhang, Chi |e verfasserin |4 aut | |
| 700 | 1 | |a Ma, Song |e verfasserin |4 aut | |
| 700 | 1 | |a Zhou, Li |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Ti |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Ququan |e verfasserin |4 aut | |
| 700 | 1 | |a Xu, Hongxing |e verfasserin |4 aut | |
| 700 | 1 | |a Ding, Tao |e verfasserin |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t National science review |d 2014 |g 11(2024), 5 vom: 16. Apr., Seite nwad280 |w (DE-627)NLM243751931 |x 2053-714X |7 nnns |
| 773 | 1 | 8 | |g volume:11 |g year:2024 |g number:5 |g day:16 |g month:04 |g pages:nwad280 |
| 856 | 4 | 0 | |u http://dx.doi.org/10.1093/nsr/nwad280 |3 Volltext |
| 912 | |a GBV_USEFLAG_A | ||
| 912 | |a GBV_NLM | ||
| 951 | |a AR | ||
| 952 | |d 11 |j 2024 |e 5 |b 16 |c 04 |h nwad280 | ||