1
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Sándor P, Lovász B, Budai J, Pápa Z, Dombi P. Ultrafast Surface Plasmon Probing of Interband and Intraband Hot Electron Excitations. NANO LETTERS 2024; 24:8024-8029. [PMID: 38833525 PMCID: PMC11229057 DOI: 10.1021/acs.nanolett.4c01669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Revised: 05/31/2024] [Accepted: 05/31/2024] [Indexed: 06/06/2024]
Abstract
Upon the interaction of light with metals, nonthermal electrons are generated with intriguing transient behavior. Here, we present femtosecond hot electron probing in a noveloptical pump/plasmon probe scheme. With this, we probed ultrafast interband and intraband dynamics with 15 nm interface selectivity, observing a two-component-decay of hot electron populations. Results are in good agreement with a three-temperature model of the metal; thus, we could attribute the fast (∼100 fs) decay to the thermalization of hot electrons and the slow (picosecond) decay to electron-lattice thermalization. Moreover, we could modulate the transmission of our plasmonic channel with ∼40% depth, hinting at the possibility of ultrafast information processing applications with plasmonic signals.
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Affiliation(s)
- Péter Sándor
- HUN-REN Wigner Research Centre for Physics, 1121 Budapest, Hungary
| | - Béla Lovász
- HUN-REN Wigner Research Centre for Physics, 1121 Budapest, Hungary
| | - Judit Budai
- ELI-ALPS Research Institute, 6728 Szeged, Hungary
| | - Zsuzsanna Pápa
- HUN-REN Wigner Research Centre for Physics, 1121 Budapest, Hungary
- ELI-ALPS Research Institute, 6728 Szeged, Hungary
| | - Péter Dombi
- HUN-REN Wigner Research Centre for Physics, 1121 Budapest, Hungary
- ELI-ALPS Research Institute, 6728 Szeged, Hungary
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2
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Mokkath JH. Hot carrier creation in a nanoparticle dimer-molecule composite. Phys Chem Chem Phys 2024; 26:14796-14807. [PMID: 38717785 DOI: 10.1039/d4cp00950a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/23/2024]
Abstract
Light-matter interactions have garnered considerable interest owing to their burgeoning applications in quantum optics and plasmonics. Utilizing first principles calculations, this work explores the hot carrier (HC) generation and distribution within a composite system made up of a plasmonic nanoparticle dimer and linear polycyclic aromatic hydrocarbon (PAH) molecules. We examine the spatial and energetic distributions of HCs by initiating photoexcitation and allowing localized surface plasmon dephasing. By positioning PAH molecules within the plasmonic nanodimer's gap region, our investigation uncovers HC tuning. Notably, depending on the size of the PAH molecules, there are significant alterations in the HC distribution. Hot electrons (HEs) are distributed across both the nanodimer and the PAH molecule, while hot holes (HHs) become entirely localized on the PAH as the PAH grows larger. These findings improve our understanding of plasmon-molecule coupled states and provide guidance on how to customize HC distributions through the creation of hybrid plasmonic materials.
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Affiliation(s)
- Junais Habeeb Mokkath
- College of Integrative Studies, Abdullah Al Salem University (AASU), Block 3, Khaldiya, Kuwait.
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3
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Kim AS, Goswami A, Taghinejad M, Cai W. Phototransformation of achiral metasurfaces into handedness-selectable transient chiral media. Proc Natl Acad Sci U S A 2024; 121:e2318713121. [PMID: 38498706 PMCID: PMC10990111 DOI: 10.1073/pnas.2318713121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Accepted: 02/20/2024] [Indexed: 03/20/2024] Open
Abstract
Chirality is a geometric property describing the lack of mirror symmetry. This unique feature enables photonic spin-selectivity in light-matter interaction, which is of great significance in stereochemistry, drug development, quantum optics, and optical polarization control. The versatile control of optical geometry renders optical metamaterials as an effective platform for engineered chiral properties at prescribed spectral regimes. Unfortunately, geometry-imposed restrictions only allow one circular polarization state of photons to effectively interact with chiral meta-structures. This limitation motivates the idea of discovering alternative techniques for dynamically reconfiguring the chiroptical responses of metamaterials in a fast and facile manner. Here, we demonstrate an approach that enables optical, sub-picosecond conversion of achiral meta-structures to transient chiral media in the visible regime with desired handedness upon the inhomogeneous generation of plasmonic hot electrons. As a proof of concept, we utilize linearly polarized laser pulse to demonstrate near-complete conversion of spin sensitivity in an achiral meta-platform-a functionality yet achieved in a non-mechanical fashion. Owing to the generation, diffusion, and relaxation dynamics of hot electrons, the demonstrated technique for all-optical creation of chirality is inherently fast, opening new avenues for ultrafast spectro-temporal construction of chiral platforms with on-demand spin-selectivity.
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Affiliation(s)
- Andrew S. Kim
- School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA30332
| | - Anjan Goswami
- School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA30332
| | - Mohammad Taghinejad
- School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA30332
- Department of Materials Science and Engineering, Stanford University, Stanford, CA94305
| | - Wenshan Cai
- School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA30332
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA30332
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4
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Muhammed MM, Mokkath JH. Plasmon-induced hot carrier distribution in a composite nanosystem: role of the adsorption site. Phys Chem Chem Phys 2024; 26:9037-9050. [PMID: 38440841 DOI: 10.1039/d4cp00322e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2024]
Abstract
The generation of hot carriers (HCs) through the excitation of localized surface plasmon resonance (LSPR) in metal nanostructures is a fascinating phenomenon that fuels both fundamental and applied research. However, gaining insights into HCs at a microscopic level has posed a complex challenge, limiting our ability to create efficient nanoantennas that utilize these energized carriers. In this investigation, we employ real-time time-dependent density functional theory (rt-TDDFT) calculations to examine the creation and distribution of HCs within a model composite system consisting of a silver (Ag) nanodisk and a carbon monoxide (CO) molecule. We find that the creation and distribution of HCs are notably affected by the CO adsorption site. Particularly, when the CO molecule adsorbs onto the hollow site of the Ag nanodisk, it exhibits the highest potential among various composite systems in terms of structural stability, enhanced orbital hybridization, and HC generation and transfer. Utilizing a Gaussian laser pulse adjusted to match the LSPR frequency, we observe a marked buildup of hot electrons and hot holes on the C and O atoms. Conversely, the region encompassing the C-O bond exhibits a depletion of hot electrons and hot holes. We believe that these findings could have significant implications in the field of HC photocatalysis.
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Affiliation(s)
| | - Junais Habeeb Mokkath
- College of Integrative Studies, Abdullah Al Salem University (AASU), Block 3, Khaldiya, Kuwait.
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5
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Mokkath JH. Plasmon induced hot carrier distribution in Ag 20 -CO composite. Chemphyschem 2024; 25:e202300602. [PMID: 38185742 DOI: 10.1002/cphc.202300602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 12/14/2023] [Accepted: 01/05/2024] [Indexed: 01/09/2024]
Abstract
The interaction between plasmons and the molecules leads to the transfer of plasmon-induced hot carriers, presenting innovative opportunities for controlling chemical reactions on sub-femtosecond timescales. Through real-time time-dependent density functional theory simulations, we have investigated the enhancement of the electric field due to plasmon excitation and the subsequent generation and transfer of plasmon-induced hot carriers in a linear atomic chain of Ag20 and an Ag20 -CO composite system. By applying a Gaussian laser pulse tuned to align with the plasmon frequency, we observe a plasmon-induced transfer of hot electrons from the occupied states of Ag to the unoccupied molecular orbitals of CO. Remarkably, there is a pronounced accumulation of hot electrons and hot holes on the C and O atoms. This phenomenon arises from the electron migration from the inter-nuclear regions of the C-O bond towards the individual C and O atoms. The insights garnered from our study hold the potential to drive advancements in the development of more efficient systems for catalytic processes empowered by plasmonic interactions.
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Affiliation(s)
- Junais Habeeb Mokkath
- Quantum Nanophotonics Simulations Lab, Department of Physics, Kuwait College of Science And Technology, Doha Area, 7th Ring Road, P.O. Box, 27235, Kuwait
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6
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Fojt J, Rossi TP, Kumar PV, Erhart P. Tailoring Hot-Carrier Distributions of Plasmonic Nanostructures through Surface Alloying. ACS NANO 2024; 18:6398-6405. [PMID: 38363179 PMCID: PMC10906084 DOI: 10.1021/acsnano.3c11418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 02/08/2024] [Accepted: 02/09/2024] [Indexed: 02/17/2024]
Abstract
Alloyed metal nanoparticles are a promising platform for plasmonically enabled hot-carrier generation, which can be used to drive photochemical reactions. Although the non-plasmonic component in these systems has been investigated for its potential to enhance catalytic activity, its capacity to affect the photochemical process favorably has been underexplored by comparison. Here, we study the impact of surface alloy species and concentration on hot-carrier generation in Ag nanoparticles. By first-principles simulations, we photoexcite the localized surface plasmon, allow it to dephase, and calculate spatially and energetically resolved hot-carrier distributions. We show that the presence of non-noble species in the topmost surface layer drastically enhances hot-hole generation at the surface at the expense of hot-hole generation in the bulk, due to the additional d-type states that are introduced to the surface. The energy of the generated holes can be tuned by choice of the alloyant, with systematic trends across the d-band block. Already low surface alloy concentrations have a large impact, with a saturation of the enhancement effect typically close to 75% of a monolayer. Hot-electron generation at the surface is hindered slightly by alloying, but here a judicious choice of the alloy composition allows one to strike a balance between hot electrons and holes. Our work underscores the promise of utilizing multicomponent nanoparticles to achieve enhanced control over plasmonic catalysis and provides guidelines for how hot-carrier distributions can be tailored by designing the electronic structure of the surface through alloying.
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Affiliation(s)
- Jakub Fojt
- Department
of Physics, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden
| | - Tuomas P. Rossi
- Department
of Applied Physics, Aalto University, FI-00076 Aalto, Finland
| | - Priyank V. Kumar
- School
of Chemical Engineering, The University
of New South Wales, 2052 Sydney, NSW, Australia
| | - Paul Erhart
- Department
of Physics, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden
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7
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Bagnall AJ, Ganguli S, Sekretareva A. Hot or Not? Reassessing Mechanisms of Photocurrent Generation in Plasmon-Enhanced Electrocatalysis. Angew Chem Int Ed Engl 2024; 63:e202314352. [PMID: 38009712 DOI: 10.1002/anie.202314352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 11/21/2023] [Accepted: 11/22/2023] [Indexed: 11/29/2023]
Abstract
It is now widely accepted that certain effects arising from localised surface plasmon resonance, such as enhanced electromagnetic fields, hot carriers, and thermal effects, can facilitate electrocatalytic processes. This newly emerging field of research is commonly referred to as plasmon-enhanced electrocatalysis (PEEC) and is attracting increasing interest from the research community, particularly regarding harnessing the high energy of hot carriers. However, this has led to a lack of critical analysis in the literature, where the participation of hot carriers is routinely claimed due to their perceived desirability, while the contribution of other effects is often not sufficiently investigated. As a result, correctly differentiating between the possible mechanisms at play has become a key point of contention. In this review, we specifically focus on the mechanisms behind photocurrents observed in PEEC and critically evaluate the possibility of alternative sources of current enhancement in the reported PEEC systems. Furthermore, we present guidelines for the best experimental practices and methods to distinguish between the various enhancement mechanisms in PEEC.
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Affiliation(s)
- Andrew J Bagnall
- Department of Chemistry, Ångström, Uppsala University, 75120, Uppsala, Sweden
| | - Sagar Ganguli
- Department of Chemistry, Ångström, Uppsala University, 75120, Uppsala, Sweden
| | - Alina Sekretareva
- Department of Chemistry, Ångström, Uppsala University, 75120, Uppsala, Sweden
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8
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Sharu K, Chattopadhyay S, Prajapati KN, Mitra J. Leveraging plasmonic hot electrons to quench defect emission in metal-semiconductor nanostructured hybrids. J Chem Phys 2023; 159:244702. [PMID: 38146830 DOI: 10.1063/5.0171078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Accepted: 12/04/2023] [Indexed: 12/27/2023] Open
Abstract
Modeling light-matter interactions in hybrid plasmonic materials is vital to their widening relevance from optoelectronics to photocatalysis. Here, we explore photoluminescence (PL) from ZnO nanorods (ZNRs) embedded with gold nanoparticles (Au NPs). A progressive increase in Au NP concentration introduces significant structural disorder and defects in ZNRs, which paradoxically quenches defect related visible PL while intensifying the near band edge (NBE) emission. Under UV excitation, the simulated semi-classical model realizes PL from ZnO with sub-bandgap defect states, eliciting visible emissions that are absorbed by Au NPs to generate a non-equilibrium hot carrier distribution. The photo-stimulated hot carriers, transferred to ZnO, substantially modify its steady-state luminescence, reducing NBE emission lifetime and altering the abundance of ionized defect states, finally reducing visible emission. The simulations show that the change in the interfacial band bending at the Au-ZnO interface under optical illumination facilitates charge transfer between the components. This work provides a general foundation to observe and model the hot carrier dynamics and strong light-matter interactions in hybrid plasmonic systems.
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Affiliation(s)
- Kritika Sharu
- School of Physics, Indian Institute of Science Education and Research Thiruvananthapuram, Thiruvananthapuram, Kerala 695551, India
| | - Shashwata Chattopadhyay
- School of Physics, Indian Institute of Science Education and Research Thiruvananthapuram, Thiruvananthapuram, Kerala 695551, India
| | - K N Prajapati
- School of Physics, Indian Institute of Science Education and Research Thiruvananthapuram, Thiruvananthapuram, Kerala 695551, India
| | - J Mitra
- School of Physics, Indian Institute of Science Education and Research Thiruvananthapuram, Thiruvananthapuram, Kerala 695551, India
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9
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Taghinejad M, Xia C, Hrton M, Lee KT, Kim AS, Li Q, Guzelturk B, Kalousek R, Xu F, Cai W, Lindenberg AM, Brongersma ML. Determining hot-carrier transport dynamics from terahertz emission. Science 2023; 382:299-305. [PMID: 37856614 DOI: 10.1126/science.adj5612] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 09/04/2023] [Indexed: 10/21/2023]
Abstract
Understanding the ultrafast excitation and transport dynamics of plasmon-driven hot carriers is critical to the development of optoelectronics, photochemistry, and solar-energy harvesting. However, the ultrashort time and length scales associated with the behavior of these highly out-of-equilibrium carriers have impaired experimental verification of ab initio quantum theories. Here, we present an approach to studying plasmonic hot-carrier dynamics that analyzes the temporal waveform of coherent terahertz bursts radiated by photo-ejected hot carriers from designer nano-antennas with a broken symmetry. For ballistic carriers ejected from gold antennas, we find an ~11-femtosecond timescale composed of the plasmon lifetime and ballistic transport time. Polarization- and phase-sensitive detection of terahertz fields further grant direct access to their ballistic transport trajectory. Our approach opens explorations of ultrafast carrier dynamics in optically excited nanostructures.
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Affiliation(s)
- Mohammad Taghinejad
- Geballe Laboratory for Advanced Materials, Stanford University, Stanford, CA, USA
- Department of Materials Science and Engineering, Stanford University, Stanford, CA, USA
| | - Chenyi Xia
- Department of Materials Science and Engineering, Stanford University, Stanford, CA, USA
| | - Martin Hrton
- Institute of Physical Engineering, Faculty of Mechanical Engineering, Brno University of Technology, Czech Republic
- Central European Institute of Technology (CEITEC), Brno University of Technology, Czech Republic
| | - Kyu-Tae Lee
- School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - Andrew S Kim
- School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - Qitong Li
- Geballe Laboratory for Advanced Materials, Stanford University, Stanford, CA, USA
| | - Burak Guzelturk
- X-ray Science Division, Argonne National Laboratory, Lemont, IL, USA
| | - Radek Kalousek
- Institute of Physical Engineering, Faculty of Mechanical Engineering, Brno University of Technology, Czech Republic
- Central European Institute of Technology (CEITEC), Brno University of Technology, Czech Republic
| | - Fenghao Xu
- Geballe Laboratory for Advanced Materials, Stanford University, Stanford, CA, USA
| | - Wenshan Cai
- School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA, USA
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - Aaron M Lindenberg
- Department of Materials Science and Engineering, Stanford University, Stanford, CA, USA
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA, USA
| | - Mark L Brongersma
- Geballe Laboratory for Advanced Materials, Stanford University, Stanford, CA, USA
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10
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Jin H, Herran M, Cortés E, Lischner J. Theory of Hot-Carrier Generation in Bimetallic Plasmonic Catalysts. ACS PHOTONICS 2023; 10:3629-3636. [PMID: 37869558 PMCID: PMC10588455 DOI: 10.1021/acsphotonics.3c00715] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Indexed: 10/24/2023]
Abstract
Bimetallic nanoreactors in which a plasmonic metal is used to funnel solar energy toward a catalytic metal have recently been studied experimentally, but a detailed theoretical understanding of these systems is lacking. Here, we present theoretical results of hot-carrier generation rates of different Au-Pd nanoarchitectures. In particular, we study spherical core-shell nanoparticles with a Au core and a Pd shell as well as antenna-reactor systems consisting of a large Au nanoparticle that acts as an antenna and a smaller Pd satellite nanoparticle separated by a gap. In addition, we investigate an antenna-reactor system in which the satellite is a core-shell nanoparticle. Hot-carrier generation rates are obtained from an atomistic quantum-mechanical modeling technique which combines a solution of Maxwell's equation with a tight-binding description of the nanoparticle electronic structure. We find that antenna-reactor systems exhibit significantly higher hot-carrier generation rates in the catalytic material than the core-shell system as a result of strong electric field enhancements associated with the gap between the antenna and the satellite. For these systems, we also study the dependence of the hot-carrier generation rate on the size of the gap, the radius of the antenna nanoparticle, and the direction of light polarization. Overall, we find a strong correlation between the calculated hot-carrier generation rates and the experimentally measured chemical activity for the different Au-Pd photocatalysts. Our insights pave the way toward a microscopic understanding of hot-carrier generation in heterogeneous nanostructures for photocatalysis and other energy-conversion applications.
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Affiliation(s)
- Hanwen Jin
- Department
of Materials, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
| | - Matias Herran
- Nanoinstitute
Munich Faculty of Physics, Ludwigs-Maximilians-Universität
München, 80539 Munich, Germany
| | - Emiliano Cortés
- Nanoinstitute
Munich Faculty of Physics, Ludwigs-Maximilians-Universität
München, 80539 Munich, Germany
| | - Johannes Lischner
- Department
of Materials and the Thomas Young Centre for Theory and Simulation
of Materials, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
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11
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Henrotte O, Kment Š, Naldoni A. Interfacial States in Au/Reduced TiO 2 Plasmonic Photocatalysts Quench Hot-Carrier Photoactivity. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2023; 127:15861-15870. [PMID: 37609381 PMCID: PMC10441571 DOI: 10.1021/acs.jpcc.3c04176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 07/24/2023] [Indexed: 08/24/2023]
Abstract
Understanding the interface of plasmonic nanostructures is essential for improving the performance of photocatalysts. Surface defects in semiconductors modify the dynamics of charge carriers, which are not well understood yet. Here, we take advantage of scanning photoelectrochemical microscopy (SPECM) as a fast and effective tool for detecting the impact of surface defects on the photoactivity of plasmonic hybrid nanostructures. We evidenced a significant photoactivity activation of TiO2 ultrathin films under visible light upon mild reduction treatment. Through Au nanoparticle (NP) arrays deposited on different reduced TiO2 films, the plasmonic photoactivity mapping revealed the effect of interfacial defects on hot charge carriers, which quenched the plasmonic activity by (i) increasing the recombination rate between hot charge carriers and (ii) leaking electrons (injected and generated in TiO2) into the Au NPs. Our results show that the catalyst's photoactivity depends on the concentration of surface defects and the population distribution of Au NPs. The present study unlocks the fast and simple detection of the surface engineering effect on the photocatalytic activity of plasmonic semiconductor systems.
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Affiliation(s)
- Olivier Henrotte
- Czech Advanced Technology and Research Institute, Regional Centre of Advanced Technologies and Materials Department, Palacký University Olomouc, Šlechtitelů 27, Olomouc 78371, Czech Republic
| | - Štěpán Kment
- Czech Advanced Technology and Research Institute, Regional Centre of Advanced Technologies and Materials Department, Palacký University Olomouc, Šlechtitelů 27, Olomouc 78371, Czech Republic
- CEET, Nanotechnology Centre, VŠB-Technical University of Ostrava, 17. Listopadu 2172/15, Ostrava-Poruba 708 00, Czech Republic
| | - Alberto Naldoni
- Czech Advanced Technology and Research Institute, Regional Centre of Advanced Technologies and Materials Department, Palacký University Olomouc, Šlechtitelů 27, Olomouc 78371, Czech Republic
- Department of Chemistry and NIS Centre, University of Turin, Turin 10125, Italy
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12
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Wang Y, Aikens CM. Effects of Field Strength and Silver Nanowire Size on Plasmon-Enhanced N 2 Dissociation. J Phys Chem A 2023. [PMID: 37379020 DOI: 10.1021/acs.jpca.3c00120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/29/2023]
Abstract
Dissociation of the nitrogen molecule via plasmon-enhanced catalysis using noble metal nanoparticles has been investigated both experimentally and computationally in recent years. However, the mechanism of plasmon-enhanced nitrogen dissociation is still not very clear. In this work, we apply theoretical approaches to examine the dissociation of a nitrogen molecule on atomically thin Agn nanowires (n = 6, 8, 10, 12) and a Ag19+ nanorod. Ehrenfest dynamics provides information about the motion of nuclei during the dynamics process and real-time TDDFT calculations show the electronic transitions and population of electrons over the first 10 s of fs time scale. The activation and dissociation of nitrogen are typically enhanced when the electric field strength increases. However, the enhancement is not always monotonic with field strength. As the length of the Ag wire increases, nitrogen is typically easier to dissociate and thus requires lower field strengths, even though the plasmon frequency is lower. The Ag19+ nanorod leads to faster dissociation of N2 than the atomically thin nanowires. Overall, our detailed study yields insights into the mechanisms involved in plasmon-enhanced N2 dissociation, as well as provides information about factors that can be used to improve adsorbate activation.
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Affiliation(s)
- Yuchen Wang
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
| | - Christine M Aikens
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
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13
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Su ZC, Chang CH, Jhou JC, Lin HT, Lin CF. Ultra-thin Ag/Si heterojunction hot-carrier photovoltaic conversion Schottky devices for harvesting solar energy at wavelength above 1.1 µm. Sci Rep 2023; 13:5388. [PMID: 37012262 PMCID: PMC10070618 DOI: 10.1038/s41598-023-31982-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Accepted: 03/21/2023] [Indexed: 04/05/2023] Open
Abstract
Traditional silicon solar cells can only absorb the solar spectrum at wavelengths below 1.1 μm. Here we proposed a breakthrough in harvesting solar energy below Si bandgap through conversion of hot carriers generated in the metal into a current using an energy barrier at the metal-semiconductor junction. Under appropriate conditions, the photo-excited hot carriers can quickly pass through the energy barrier and lead to photocurrent, maximizing the use of excitation energy and reducing waste heat consumption. Compared with conventional silicon solar cells, hot-carrier photovoltaic conversion Schottky device has better absorption and conversion efficiency for an infrared regime above 1.1 μm, expands the absorption wavelength range of silicon-based solar cells, makes more effective use of the entire solar spectrum, and further improves the photovoltaic performance of metal-silicon interface components by controlling the evaporation rate, deposition thickness, and annealing temperature of the metal layer. Finally, the conversion efficiency 3.316% is achieved under the infrared regime with a wavelength of more than 1100 nm and an irradiance of 13.85 mW/cm2.
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Affiliation(s)
- Zih-Chun Su
- Graduate Institute of Photonics and Optoelectronics, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei, 106319, Taiwan
| | - Chung-Han Chang
- Graduate Institute of Photonics and Optoelectronics, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei, 106319, Taiwan
| | - Jia-Ci Jhou
- Graduate Institute of Photonics and Optoelectronics, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei, 106319, Taiwan
| | - Hsin-Ting Lin
- Graduate Institute of Advance Technology, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei, 106319, Taiwan
| | - Ching-Fuh Lin
- Graduate Institute of Photonics and Optoelectronics, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei, 106319, Taiwan.
- Graduate Institute of Electronics Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei, 106319, Taiwan.
- Department of Electrical Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei, 106319, Taiwan.
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14
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Kim AS, Taghinejad M, Goswami A, Raju L, Lee K, Cai W. Tailored Dispersion of Spectro-Temporal Dynamics in Hot-Carrier Plasmonics. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2205434. [PMID: 36658727 PMCID: PMC10015883 DOI: 10.1002/advs.202205434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 12/11/2022] [Indexed: 06/17/2023]
Abstract
Ultrafast optical switching in plasmonic platforms relies on the third-order Kerr nonlinearity, which is tightly linked to the dynamics of hot carriers in nanostructured metals. Although extensively utilized, a fundamental understanding on the dependence of the switching dynamics upon optical resonances has often been overlooked. Here, all-optical control of resonance bands in a hybrid photonic-plasmonic crystal is employed as an empowering technique for probing the resonance-dependent switching dynamics upon hot carrier formation. Differential optical transmission measurements reveal an enhanced switching performance near the anti-crossing point arising from strong coupling between local and nonlocal resonance modes. Furthermore, entangled with hot-carrier dynamics, the nonlinear correspondence between optical resonances and refractive index change results in tailorable dispersion of recovery speeds which can notably deviate from the characteristic lifetime of hot carriers. The comprehensive understanding provides new protocols for optically characterizing hot-carrier dynamics and optimizing resonance-based all-optical switches for operations across the visible spectrum.
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Affiliation(s)
- Andrew S. Kim
- School of Electrical and Computer EngineeringGeorgia Institute of TechnologyAtlantaGA30332USA
| | - Mohammad Taghinejad
- School of Electrical and Computer EngineeringGeorgia Institute of TechnologyAtlantaGA30332USA
| | - Anjan Goswami
- School of Electrical and Computer EngineeringGeorgia Institute of TechnologyAtlantaGA30332USA
| | - Lakshmi Raju
- School of Electrical and Computer EngineeringGeorgia Institute of TechnologyAtlantaGA30332USA
| | - Kyu‐Tae Lee
- School of Electrical and Computer EngineeringGeorgia Institute of TechnologyAtlantaGA30332USA
| | - Wenshan Cai
- School of Electrical and Computer EngineeringGeorgia Institute of TechnologyAtlantaGA30332USA
- School of Materials Science and EngineeringGeorgia Institute of TechnologyAtlantaGA30332USA
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15
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Fojt J, Rossi TP, Kuisma M, Erhart P. Hot-Carrier Transfer across a Nanoparticle-Molecule Junction: The Importance of Orbital Hybridization and Level Alignment. NANO LETTERS 2022; 22:8786-8792. [PMID: 36200744 PMCID: PMC9650767 DOI: 10.1021/acs.nanolett.2c02327] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 10/03/2022] [Indexed: 05/31/2023]
Abstract
While direct hot-carrier transfer can increase photocatalytic activity, it is difficult to discern experimentally and competes with several other mechanisms. To shed light on these aspects, here, we model from first-principles hot-carrier generation across the interface between plasmonic nanoparticles and a CO molecule. The hot-electron transfer probability depends nonmonotonically on the nanoparticle-molecule distance and can be effective at long distances, even before a strong chemical bond can form; hot-hole transfer on the other hand is limited to shorter distances. These observations can be explained by the energetic alignment between molecular and nanoparticle states as well as the excitation frequency. The hybridization of the molecular orbitals is the key predictor for hot-carrier transfer in these systems, emphasizing the necessity of ground state hybridization for accurate predictions. Finally, we show a nontrivial dependence of the hot-carrier distribution on the excitation energy, which could be exploited when optimizing photocatalytic systems.
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Affiliation(s)
- Jakub Fojt
- Department
of Physics, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden
| | - Tuomas P. Rossi
- Department
of Applied Physics, Aalto University, FI-00076 Aalto, Finland
| | - Mikael Kuisma
- Department
of Physics, Technical University of Denmark, DK-2800 Kongens
Lyngby, Denmark
| | - Paul Erhart
- Department
of Physics, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden
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16
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Budai J, Pápa Z, Petrik P, Dombi P. Ultrasensitive probing of plasmonic hot electron occupancies. Nat Commun 2022; 13:6695. [DOI: 10.1038/s41467-022-34554-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 10/27/2022] [Indexed: 11/06/2022] Open
Abstract
AbstractNon-thermal and thermal carrier populations in plasmonic systems raised significant interest in contemporary fundamental and applied physics. Although the theoretical description predicts not only the energies but also the location of the generated carriers, the experimental justification of these theories is still lacking. Here, we demonstrate experimentally that upon the optical excitation of surface plasmon polaritons, a non-thermal electron population appears in the topmost domain of the plasmonic film directly coupled to the local fields. The applied all-optical method is based on spectroscopic ellipsometric determination of the dielectric function, allowing us to obtain in-depth information on surface plasmon induced changes of the directly related electron occupancies. The ultrahigh sensitivity of our method allows us to capture the signatures of changes induced by electron-electron scattering processes with ultrafast decay times. These experiments shed light on the build-up of plasmonic hot electron population in nanoscale media.
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17
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Bayles A, Tian S, Zhou J, Yuan L, Yuan Y, Jacobson CR, Farr C, Zhang M, Swearer DF, Solti D, Lou M, Everitt HO, Nordlander P, Halas NJ. Al@TiO 2 Core-Shell Nanoparticles for Plasmonic Photocatalysis. ACS NANO 2022; 16:5839-5850. [PMID: 35293740 DOI: 10.1021/acsnano.1c10995] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Plasmon-induced photocatalysis is a topic of rapidly increasing interest, due to its potential for substantially lowering reaction barriers and temperatures and for increasing the selectivity of chemical reactions. Of particular interest for plasmonic photocatalysis are antenna-reactor nanoparticles and nanostructures, which combine the strong light-coupling of plasmonic nanostructures with reactors that enhance chemical specificity. Here, we introduce Al@TiO2 core-shell nanoparticles, combining earth-abundant Al nanocrystalline cores with TiO2 layers of tunable thickness. We show that these nanoparticles are active photocatalysts for the hot electron-mediated H2 dissociation reaction as well as for hot hole-mediated methanol dehydration. The wavelength dependence of the reaction rates suggests that the photocatalytic mechanism is plasmonic hot carrier generation with subsequent transfer of the hot carriers into the TiO2 layer. The Al@TiO2 antenna-reactor provides an earth-abundant solution for the future design of visible-light-driven plasmonic photocatalysts.
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Affiliation(s)
- Aaron Bayles
- Department of Chemistry, Rice University, Houston, Texas 77005, United States
- Laboratory for Nanophotonics, Rice University, Houston, Texas 77005, United States
| | - Shu Tian
- Department of Chemistry, Rice University, Houston, Texas 77005, United States
- Laboratory for Nanophotonics, Rice University, Houston, Texas 77005, United States
| | - Jingyi Zhou
- Department of Materials Science and NanoEngineering, Rice University, Houston, Texas 77005, United States
- Laboratory for Nanophotonics, Rice University, Houston, Texas 77005, United States
| | - Lin Yuan
- Department of Chemistry, Rice University, Houston, Texas 77005, United States
- Laboratory for Nanophotonics, Rice University, Houston, Texas 77005, United States
| | - Yigao Yuan
- Department of Chemistry, Rice University, Houston, Texas 77005, United States
- Laboratory for Nanophotonics, Rice University, Houston, Texas 77005, United States
| | - Christian R Jacobson
- Department of Chemistry, Rice University, Houston, Texas 77005, United States
- Laboratory for Nanophotonics, Rice University, Houston, Texas 77005, United States
| | - Corbin Farr
- Department of Chemistry, Rice University, Houston, Texas 77005, United States
- Laboratory for Nanophotonics, Rice University, Houston, Texas 77005, United States
| | - Ming Zhang
- Department of Physics & Astronomy, Rice University, Houston, Texas 77005, United States
- Laboratory for Nanophotonics, Rice University, Houston, Texas 77005, United States
| | - Dayne F Swearer
- Department of Chemistry, Rice University, Houston, Texas 77005, United States
- Laboratory for Nanophotonics, Rice University, Houston, Texas 77005, United States
| | - David Solti
- Department of Chemistry, Rice University, Houston, Texas 77005, United States
- Laboratory for Nanophotonics, Rice University, Houston, Texas 77005, United States
| | - Minghe Lou
- Department of Chemistry, Rice University, Houston, Texas 77005, United States
- Laboratory for Nanophotonics, Rice University, Houston, Texas 77005, United States
| | - Henry O Everitt
- Department of Electrical and Computer Engineering, Rice University, Houston, Texas 77005, United States
- Laboratory for Nanophotonics, Rice University, Houston, Texas 77005, United States
- U.S. Army DEVCOM Army Research Laboratory - South, Houston, Texas 77005, United States
| | - Peter Nordlander
- Department of Physics & Astronomy, Rice University, Houston, Texas 77005, United States
- Laboratory for Nanophotonics, Rice University, Houston, Texas 77005, United States
| | - Naomi J Halas
- Department of Chemistry, Rice University, Houston, Texas 77005, United States
- Department of Electrical and Computer Engineering, Rice University, Houston, Texas 77005, United States
- Department of Physics & Astronomy, Rice University, Houston, Texas 77005, United States
- Laboratory for Nanophotonics, Rice University, Houston, Texas 77005, United States
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18
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Uskov AV, Khurgin JB, Smetanin IV, Protsenko IE, Nikonorov NV. Landau Damping in Hybrid Plasmonics. J Phys Chem Lett 2022; 13:997-1001. [PMID: 35060736 DOI: 10.1021/acs.jpclett.1c04031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The Landau damping (LD) mechanism of the localized surface plasmon (LSP) decay is studied for the hybrid nanoplasmonic (metal core/dielectric shell) structures. It is shown that LD in hybrid structures is strongly affected by the permittivity and the electron effective mass in the dielectric shell in accordance with previous observations by Kreibig, and the strength of LD can be enhanced by an order of magnitude for some combinations of permittivity and effective mass. The physical reason for this effect is identified as an electron spillover into the dielectric where the electric field is higher than that in the metal and the presence of quasi-discrete energy levels in the dielectric. The theory indicates that the transition absorption at the metal-dielectric interface is a dominant contribution to LD in such hybrid structures. Thus, by judicious selection of dielectric material and its thickness, one can engineer decay rates and hot carrier production for important applications, such as photodetection and photochemistry.
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Affiliation(s)
- Alexander V Uskov
- P. N. Lebedev Physical Institute, Russian Academy of Sciences, Leninskiy Pr. 53, Moscow, 119333, Russia
| | - Jacob B Khurgin
- Department of ECE, John Hopkins University, Baltimore, Maryland 21218, United States
| | - Igor V Smetanin
- P. N. Lebedev Physical Institute, Russian Academy of Sciences, Leninskiy Pr. 53, Moscow, 119333, Russia
| | - Igor E Protsenko
- P. N. Lebedev Physical Institute, Russian Academy of Sciences, Leninskiy Pr. 53, Moscow, 119333, Russia
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19
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Kim S, Lee S, Yoon S. Effect of Nanoparticle Size on Plasmon-Driven Reaction Efficiency. ACS APPLIED MATERIALS & INTERFACES 2022; 14:4163-4169. [PMID: 35006675 DOI: 10.1021/acsami.1c21441] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Hot electron chemistry is of paramount significance because of its applicability to photocatalytic reactions, solar energy conversion, and waste decomposition. The nonradiative decay of excited plasmons in gold nanoparticles (AuNPs) generates highly energetic nonthermal electrons and holes that can induce chemical reactions when transferred to nearby molecules. In this study, we explore the relationship between AuNP size (26-133 nm) and the plasmon-induced reaction yield. To isolate the size from other structural parameters, we prepare perfectly round gold nanospheres (AuNSs) with narrow size distributions. The use of a nanoparticle-on-mirror configuration, in which the reactant molecules (4-mercaptobenzoic acid) are positioned in nanogaps between the AuNSs and a Au film, promotes the generation of hot carriers and allows the highly sensitive detection of the reaction products (benzenethiol) using surface-enhanced Raman spectroscopy. We show that the reaction yield increases as the AuNS size increases up to 94 nm and then decreases for larger AuNSs. This peculiar Λ-shaped size-dependent reactivity can be explained by considering both the plasmonic absorption efficiency of AuNSs and the decay rate of plasmons via electron-surface scattering. The product of the calculated absorption cross section and the inverse of the AuNS size reproduces our experimental results remarkably well. These findings will contribute to the design of highly efficient plasmonic photocatalysts and photovoltaic devices.
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Affiliation(s)
- Seokheon Kim
- Department of Chemistry, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Korea
| | - Sungwoon Lee
- Department of Chemistry, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Korea
| | - Sangwoon Yoon
- Department of Chemistry, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Korea
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20
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Hartelt M, Terekhin PN, Eul T, Mahro AK, Frisch B, Prinz E, Rethfeld B, Stadtmüller B, Aeschlimann M. Energy and Momentum Distribution of Surface Plasmon-Induced Hot Carriers Isolated via Spatiotemporal Separation. ACS NANO 2021; 15:19559-19569. [PMID: 34852458 PMCID: PMC8717854 DOI: 10.1021/acsnano.1c06586] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 11/10/2021] [Indexed: 06/13/2023]
Abstract
Understanding the differences between photon-induced and plasmon-induced hot electrons is essential for the construction of devices for plasmonic energy conversion. The mechanism of the plasmonic enhancement in photochemistry, photocatalysis, and light-harvesting and especially the role of hot carriers is still heavily discussed. The question remains, if plasmon-induced and photon-induced hot carriers are fundamentally different or if plasmonic enhancement is only an effect of field concentration producing these carriers in greater numbers. For the bulk plasmon resonance, a fundamental difference is known, yet for the technologically important surface plasmons, this is far from being settled. The direct imaging of surface plasmon-induced hot carriers could provide essential insight, but the separation of the influence of driving laser, field-enhancement, and fundamental plasmon decay has proven to be difficult. Here, we present an approach using a two-color femtosecond pump-probe scheme in time-resolved 2-photon-photoemission (tr-2PPE), supported by a theoretical analysis of the light and plasmon energy flow. We separate the energy and momentum distribution of the plasmon-induced hot electrons from that of photoexcited electrons by following the spatial evolution of photoemitted electrons with energy-resolved photoemission electron microscopy (PEEM) and momentum microscopy during the propagation of a surface plasmon polariton (SPP) pulse along a gold surface. With this scheme, we realize a direct experimental access to plasmon-induced hot electrons. We find a plasmonic enhancement toward high excitation energies and small in-plane momenta, which suggests a fundamentally different mechanism of hot electron generation, as previously unknown for surface plasmons.
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Affiliation(s)
- Michael Hartelt
- Department
of Physics and Research Center OPTIMAS,TU
Kaiserslautern, Erwin-Schrödinger-Straße 46, 67663 Kaiserslautern, Germany
| | - Pavel N. Terekhin
- Department
of Physics and Research Center OPTIMAS,TU
Kaiserslautern, Erwin-Schrödinger-Straße 46, 67663 Kaiserslautern, Germany
| | - Tobias Eul
- Department
of Physics and Research Center OPTIMAS,TU
Kaiserslautern, Erwin-Schrödinger-Straße 46, 67663 Kaiserslautern, Germany
| | - Anna-Katharina Mahro
- Department
of Physics and Research Center OPTIMAS,TU
Kaiserslautern, Erwin-Schrödinger-Straße 46, 67663 Kaiserslautern, Germany
| | - Benjamin Frisch
- Department
of Physics and Research Center OPTIMAS,TU
Kaiserslautern, Erwin-Schrödinger-Straße 46, 67663 Kaiserslautern, Germany
| | - Eva Prinz
- Department
of Physics and Research Center OPTIMAS,TU
Kaiserslautern, Erwin-Schrödinger-Straße 46, 67663 Kaiserslautern, Germany
| | - Baerbel Rethfeld
- Department
of Physics and Research Center OPTIMAS,TU
Kaiserslautern, Erwin-Schrödinger-Straße 46, 67663 Kaiserslautern, Germany
| | - Benjamin Stadtmüller
- Department
of Physics and Research Center OPTIMAS,TU
Kaiserslautern, Erwin-Schrödinger-Straße 46, 67663 Kaiserslautern, Germany
- Institute
of Physics, Johannes Gutenberg University
Mainz, Staudingerweg
7, 55128 Mainz, Germany
| | - Martin Aeschlimann
- Department
of Physics and Research Center OPTIMAS,TU
Kaiserslautern, Erwin-Schrödinger-Straße 46, 67663 Kaiserslautern, Germany
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21
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Besteiro LV, Movsesyan A, Ávalos-Ovando O, Lee S, Cortés E, Correa-Duarte MA, Wang ZM, Govorov AO. Local Growth Mediated by Plasmonic Hot Carriers: Chirality from Achiral Nanocrystals Using Circularly Polarized Light. NANO LETTERS 2021; 21:10315-10324. [PMID: 34860527 PMCID: PMC8704195 DOI: 10.1021/acs.nanolett.1c03503] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 11/08/2021] [Indexed: 05/05/2023]
Abstract
Plasmonic nanocrystals and their assemblies are excellent tools to create functional systems, including systems with strong chiral optical responses. Here we study the possibility of growing chiral plasmonic nanocrystals from strictly nonchiral seeds of different types by using circularly polarized light as the chirality-inducing mechanism. We present a novel theoretical methodology that simulates realistic nonlinear and inhomogeneous photogrowth processes in plasmonic nanocrystals, mediated by the excitation of hot carriers that can drive surface chemistry. We show the strongly anisotropic and chiral growth of oriented nanocrystals with lowered symmetry, with the striking feature that such chiral growth can appear even for nanocrystals with subwavelength sizes. Furthermore, we show that the chiral growth of nanocrystals in solution is fundamentally challenging. This work explores new ways of growing monolithic chiral plasmonic nanostructures and can be useful for the development of plasmonic photocatalysis and fabrication technologies.
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Affiliation(s)
- Lucas V. Besteiro
- Institute
of Fundamental and Frontier Sciences, University
of Electronic Science and Technology of China, Chengdu 610054, People’s Republic of China
- Centre
Énergie Matériaux et Télécommunications, Institut National de la Recherche Scientifique, Varennes, Québec J3X 1S2, Canada
- CINBIO, Universidade de Vigo, 36310 Vigo, Spain
| | - Artur Movsesyan
- Institute
of Fundamental and Frontier Sciences, University
of Electronic Science and Technology of China, Chengdu 610054, People’s Republic of China
- Department
of Physics and Astronomy and the Nanoscale & Quantum Phenomena
Institute, Ohio University, Athens, Ohio 45701, United States
| | - Oscar Ávalos-Ovando
- Department
of Physics and Astronomy and the Nanoscale & Quantum Phenomena
Institute, Ohio University, Athens, Ohio 45701, United States
| | - Seunghoon Lee
- Chair
in Hybrid Nanosystems, Nanoinstitute Munich, Faculty of Physics, Ludwig-Maximilians-Universität München, 80539 Munich, Germany
| | - Emiliano Cortés
- Chair
in Hybrid Nanosystems, Nanoinstitute Munich, Faculty of Physics, Ludwig-Maximilians-Universität München, 80539 Munich, Germany
| | | | - Zhiming M. Wang
- Institute
of Fundamental and Frontier Sciences, University
of Electronic Science and Technology of China, Chengdu 610054, People’s Republic of China
- Institute
for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Alexander O. Govorov
- Institute
of Fundamental and Frontier Sciences, University
of Electronic Science and Technology of China, Chengdu 610054, People’s Republic of China
- Department
of Physics and Astronomy and the Nanoscale & Quantum Phenomena
Institute, Ohio University, Athens, Ohio 45701, United States
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22
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Zhang H, Lam SH, Guo Y, Yang J, Lu Y, Shao L, Yang B, Xiao L, Wang J. Selective Deposition of Catalytic Metals on Plasmonic Au Nanocups for Room-Light-Active Photooxidation of o-Phenylenediamine. ACS APPLIED MATERIALS & INTERFACES 2021; 13:51855-51866. [PMID: 33908755 DOI: 10.1021/acsami.1c03806] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Plasmonic hotspots can enhance hot charge carrier generation, offering new opportunities for improving the photocatalytic activity. In this work, eight types of heteronanostructures are synthesized by selectively depositing catalytic metals at the different sites of highly asymmetric Au nanocups for the photocatalytic oxidation of o-phenylenediamine. The oxidation of this molecule has so far mainly relied on the use of H2O2 as an oxidizing agent in the presence of an appropriate catalyst. The photocatalytic oxidation under visible light has not been reported before. The Au nanocups with AgPt nanoparticles grown at the opening edge and bottom exhibit the highest photocatalytic activity. The generated hot electrons and holes both participate in the reaction. The hot carriers from the interband and intraband transitions are both utilized. The optimal catalyst shows a favorable activity even under room light. Simulations reveal that the profound electric field enhancement at the hotspots boosts the hot-carrier density in the catalytic nanoparticles, explaining the overwhelming photocatalytic activity of the optimal catalyst.
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Affiliation(s)
- Han Zhang
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Shiu Hei Lam
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Yanzhen Guo
- Henan Provincial Key Laboratory of Nanocomposites and Applications, Institute of Nanostructured Functional Materials, Huanghe Science and Technology College, Zhengzhou 450006, China
| | - Jianhua Yang
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Yao Lu
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Lei Shao
- Beijing Computational Science Research Centre, Beijing 100193, China
| | - Baocheng Yang
- Henan Provincial Key Laboratory of Nanocomposites and Applications, Institute of Nanostructured Functional Materials, Huanghe Science and Technology College, Zhengzhou 450006, China
| | - Lehui Xiao
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Jianfang Wang
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
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23
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Shao F, Wang W, Yang W, Yang Z, Zhang Y, Lan J, Dieter Schlüter A, Zenobi R. In-situ nanospectroscopic imaging of plasmon-induced two-dimensional [4+4]-cycloaddition polymerization on Au(111). Nat Commun 2021; 12:4557. [PMID: 34315909 PMCID: PMC8316434 DOI: 10.1038/s41467-021-24856-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Accepted: 06/16/2021] [Indexed: 01/03/2023] Open
Abstract
Plasmon-induced chemical reactions (PICRs) have recently become promising approaches for highly efficient light-chemical energy conversion. However, an in-depth understanding of their mechanisms at the nanoscale still remains challenging. Here, we present an in-situ investigation by tip-enhanced Raman spectroscopy (TERS) imaging of the plasmon-induced [4+4]-cycloaddition polymerization within anthracene-based monomer monolayers physisorbed on Au(111), and complement the experimental results with density functional theory (DFT) calculations. This two-dimensional (2D) polymerization can be flexibly triggered and manipulated by the hot carriers, and be monitored simultaneously by TERS in real time and space. TERS imaging provides direct evidence for covalent bond formation with ca. 3.7 nm spatial resolution under ambient conditions. Combined with DFT calculations, the TERS results demonstrate that the lateral polymerization on Au(111) occurs by a hot electron tunneling mechanism, and crosslinks form via a self-stimulating growth mechanism. We show that TERS is promising to be plasmon-induced nanolithography for organic 2D materials.
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Affiliation(s)
- Feng Shao
- Department of Physics and Astronomy, National Graphene Institute, University of Manchester, Manchester, UK.
- Department of Chemistry and Applied Biosciences, ETH Zurich, Zurich, Switzerland.
| | - Wei Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, Chang-Kung Chuang Institute, East China Normal University, Shanghai, People's Republic of China
| | - Weimin Yang
- Department of Physics, Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Jiujiang Research Institute, Xiamen University, Xiamen, Fujian, People's Republic of China
| | - Zhilin Yang
- Department of Physics, Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Jiujiang Research Institute, Xiamen University, Xiamen, Fujian, People's Republic of China
| | - Yao Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China, Hefei, People's Republic of China
| | - Jinggang Lan
- Department of Chemistry, University of Zurich, Zurich, Switzerland.
| | - A Dieter Schlüter
- Department of Materials, Polymer Chemistry, ETH Zurich, Zurich, Switzerland
| | - Renato Zenobi
- Department of Chemistry and Applied Biosciences, ETH Zurich, Zurich, Switzerland.
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24
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Li S, Huang H, Shao L, Wang J. How to Utilize Excited Plasmon Energy Efficiently. ACS NANO 2021; 15:10759-10768. [PMID: 34137261 DOI: 10.1021/acsnano.1c02627] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Plasmonic nanoparticles can concentrate electromagnetic fields at the nanoscale and function as a powerful intermediary to enhance light-matter interactions. They have been widely employed for solar energy harvesting, photocatalysis, medicine, sensing, imaging, spectroscopy, optics, and optoelectronics. In this Perspective, we provide a brief overview of research progress in the utilization of excited plasmon energy, with emphasis on the charge- and energy-transfer processes. We discuss important factors that affect the charge- and energy-transfer efficiencies and present open questions and major challenges in the efficient utilization of excited plasmon energy.
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Affiliation(s)
- Shasha Li
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
- Shenzhen JL Computational Science and Applied Research Institute, Shenzhen 518109, China
- Beijing Computational Science Research Center, Beijing 100193, China
| | - He Huang
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Lei Shao
- Shenzhen JL Computational Science and Applied Research Institute, Shenzhen 518109, China
- Beijing Computational Science Research Center, Beijing 100193, China
| | - Jianfang Wang
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
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25
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Kim S, Yoon S. On the Origin of the Plasmonic Properties of Gold Nanoparticles. B KOREAN CHEM SOC 2021. [DOI: 10.1002/bkcs.12349] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Seokheon Kim
- Department of Chemistry Chung‐Ang University 84 Heukseok‐ro, Dongjak‐gu, Seoul 06974 Korea
| | - Sangwoon Yoon
- Department of Chemistry Chung‐Ang University 84 Heukseok‐ro, Dongjak‐gu, Seoul 06974 Korea
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26
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Abstract
We provide a complete quantitative theory for light emission from Drude metals under continuous wave illumination, based on our recently derived steady-state nonequilibrium electron distribution. We show that the electronic contribution to the emission exhibits a dependence on the emission frequency which is very similar to the energy dependence of the nonequilibrium distribution, and characterize different scenarios determining the measurable emission line shape. This enables the identification of experimentally relevant situations, where the emission lineshapes deviate significantly from predictions based on the standard theory (namely, on the photonic density of states), and enables the differentiation between cases where the emission scales with the metal object surface or with its volume. We also provide an analytic description (which is absent from the literature) of the (polynomial) dependence of the metal emission on the electric field, its dependence on the pump laser frequency, and its nontrivial exponential dependence on the electron temperature, both for the Stokes and anti-Stokes regimes. Our results imply that the emission does not originate from either Fermion statistics (due to e-e interactions), and even though one could have expected the emission to follow boson statistics due to involvement of photons (as in Planck's Black Body emission), it turns out that it deviates from that form as well. Finally, we resolve the arguments associated with the effects of electron and lattice temperatures on the emission, and which of them can be extracted from the anti-Stokes emission.
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Affiliation(s)
- Yonatan Sivan
- School of Electrical and Computer Engineering, Ben-Gurion University of the Negev, Be'er sheva, Israel 8410501
| | - Yonatan Dubi
- Department of Chemistry, Ben-Gurion University of the Negev, Be'er sheva, Israel 8410501
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27
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Graf M, Vonbun-Feldbauer GB, Koper MTM. Direct and Broadband Plasmonic Charge Transfer to Enhance Water Oxidation on a Gold Electrode. ACS NANO 2021; 15:3188-3200. [PMID: 33496564 DOI: 10.1021/acsnano.0c09776] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Plasmonic photocatalysis via hot charge carriers suffers from their short lifetime compared with the sluggish kinetics of most reactions. To increase lifetime, adsorbates on the surface of a plasmonic metal may create preferential states for electrons to be excited from. We demonstrate this effect with O adsorbates on a nanoporous gold electrode. Nanoporous gold is used to obtain a broadband optical response, to increase the obtained photocurrent, and to provide a SERS-active substrate. Only with adsorbates present, we observe significant photocurrents. Illumination also increases the adsorbate coverage above its dark potential-dependent equilibrium, as derived from a two-laser in situ SERS approach. Density functional theory calculations confirm the appearance of excitable states below the Fermi level. The photocurrent enhancement and broadband characteristics reveal the potential of the plasmonic approach to improve the efficiency of photoelectrochemical water splitting.
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Affiliation(s)
- Matthias Graf
- Institute for Materials Research, Helmholtz Center Geesthacht, D-21502 Geesthacht, Germany
- Leiden Institute of Chemistry, Leiden University, 2333 CD Leiden, The Netherlands
| | | | - Marc T M Koper
- Leiden Institute of Chemistry, Leiden University, 2333 CD Leiden, The Netherlands
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28
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Salmón-Gamboa JU, Romero-Gómez M, Roth DJ, Krasavin AV, Wang P, Dickson W, Zayats AV. Rational design of bimetallic photocatalysts based on plasmonically-derived hot carriers. NANOSCALE ADVANCES 2021; 3:767-780. [PMID: 36133839 PMCID: PMC9419383 DOI: 10.1039/d0na00728e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Accepted: 12/17/2020] [Indexed: 05/17/2023]
Abstract
Hot carriers generated by plasmonic excitations have recently opened up new avenues in photocatalysis. The transfer of these energetic carriers to adjacent molecules can promote chemical transformations that are important for hydrogen generation by water splitting, CO2 reduction and degradation of organic pollutants. Here, we have developed and optimised a plasmonic hot-carrier catalytic system based on silica nanoparticles decorated with plasmonic gold nanoparticles as a source of hot carriers, equipped with platinum nanoclusters as co-catalyst for the enhancement of hot-carrier extraction. The latter plays a triple role by providing: a surface favourable for molecular adsorption; hot-electron generation near the nanoclusters due to field enhancement effects and electron momentum relaxation facilitating the electron transfer across the metal surface, exactly where molecules are adsorbed. The combination of plasmonic and catalytic metals in nano-heterostructured devices provides a new platform for photocatalytic processes and is of significant interest for future solar-based clean technologies.
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Affiliation(s)
- Jorge U Salmón-Gamboa
- Department of Physics and London Centre for Nanotechnology, King's College London Strand London WC2R 2LS UK
| | - Mayela Romero-Gómez
- Department of Physics and London Centre for Nanotechnology, King's College London Strand London WC2R 2LS UK
| | - Diane J Roth
- Department of Physics and London Centre for Nanotechnology, King's College London Strand London WC2R 2LS UK
| | - Alexey V Krasavin
- Department of Physics and London Centre for Nanotechnology, King's College London Strand London WC2R 2LS UK
| | - Pan Wang
- Department of Physics and London Centre for Nanotechnology, King's College London Strand London WC2R 2LS UK
| | - Wayne Dickson
- Department of Physics and London Centre for Nanotechnology, King's College London Strand London WC2R 2LS UK
| | - Anatoly V Zayats
- Department of Physics and London Centre for Nanotechnology, King's College London Strand London WC2R 2LS UK
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29
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Hattori Y, Meng J, Zheng K, Meier de Andrade A, Kullgren J, Broqvist P, Nordlander P, Sá J. Phonon-Assisted Hot Carrier Generation in Plasmonic Semiconductor Systems. NANO LETTERS 2021; 21:1083-1089. [PMID: 33416331 PMCID: PMC7877730 DOI: 10.1021/acs.nanolett.0c04419] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 01/06/2021] [Indexed: 05/23/2023]
Abstract
Plasmonic materials have optical cross sections that exceed by 10-fold their geometric sizes, making them uniquely suitable to convert light into electrical charges. Harvesting plasmon-generated hot carriers is of interest for the broad fields of photovoltaics and photocatalysis; however, their direct utilization is limited by their ultrafast thermalization in metals. To prolong the lifetime of hot carriers, one can place acceptor materials, such as semiconductors, in direct contact with the plasmonic system. Herein, we report the effect of operating temperature on hot electron generation and transfer to a suitable semiconductor. We found that an increase in the operation temperature improves hot electron harvesting in a plasmonic semiconductor hybrid system, contrasting what is observed on photodriven processes in nonplasmonic systems. The effect appears to be related to an enhancement in hot carrier generation due to phonon coupling. This discovery provides a new strategy for optimization of photodriven energy production and chemical synthesis.
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Affiliation(s)
- Yocefu Hattori
- Physical
Chemistry Division, Department of Chemistry, Ångström
Laboratory, Uppsala University, 75120 Uppsala, Sweden
| | - Jie Meng
- Department
of Chemistry, Technical University of Denmark, DK-2800 Kongens
Lyngby, Denmark
| | - Kaibo Zheng
- Department
of Chemistry, Technical University of Denmark, DK-2800 Kongens
Lyngby, Denmark
- Chemical
Physics and NanoLund, Lund University, Box 124, 22100 Lund, Sweden
| | - Ageo Meier de Andrade
- Structural
Chemistry Division, Department of Chemistry, Ångström
Laboratory, Uppsala University, 75120 Uppsala, Sweden
| | - Jolla Kullgren
- Structural
Chemistry Division, Department of Chemistry, Ångström
Laboratory, Uppsala University, 75120 Uppsala, Sweden
| | - Peter Broqvist
- Structural
Chemistry Division, Department of Chemistry, Ångström
Laboratory, Uppsala University, 75120 Uppsala, Sweden
| | - Peter Nordlander
- Department
of Physics, Rice University, 6100 South Main Street, Houston, Texas 77251-1892, United States
| | - Jacinto Sá
- Physical
Chemistry Division, Department of Chemistry, Ångström
Laboratory, Uppsala University, 75120 Uppsala, Sweden
- Institute
of Physical Chemistry, Polish Academy of
Sciences, 01-224 Warsaw, Poland
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30
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Cortés E, Besteiro LV, Alabastri A, Baldi A, Tagliabue G, Demetriadou A, Narang P. Challenges in Plasmonic Catalysis. ACS NANO 2020; 14:16202-16219. [PMID: 33314905 DOI: 10.1021/acsnano.0c08773] [Citation(s) in RCA: 102] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The use of nanoplasmonics to control light and heat close to the thermodynamic limit enables exciting opportunities in the field of plasmonic catalysis. The decay of plasmonic excitations creates highly nonequilibrium distributions of hot carriers that can initiate or catalyze reactions through both thermal and nonthermal pathways. In this Perspective, we present the current understanding in the field of plasmonic catalysis, capturing vibrant debates in the literature, and discuss future avenues of exploration to overcome critical bottlenecks. Our Perspective spans first-principles theory and computation of correlated and far-from-equilibrium light-matter interactions, synthesis of new nanoplasmonic hybrids, and new steady-state and ultrafast spectroscopic probes of interactions in plasmonic catalysis, recognizing the key contributions of each discipline in realizing the promise of plasmonic catalysis. We conclude with our vision for fundamental and technological advances in the field of plasmon-driven chemical reactions in the coming years.
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Affiliation(s)
- Emiliano Cortés
- Chair in Hybrid Nanosystems, Nanoinstitute Munich, Faculty of Physics, Ludwig-Maximilians-Universität München, 80539 München, Germany
| | | | - Alessandro Alabastri
- Department of Electrical and Computer Engineering, Rice University, 6100 Main Street MS-378, Houston, Texas 77005, United States
| | - Andrea Baldi
- DIFFER - Dutch Institute for Fundamental Energy Research, De Zaale 20, 5612 AJ Eindhoven, The Netherlands
- Department of Physics and Astronomy, Vrije Universiteit Amsterdam, De Boelelaan 1081, 1081 HV Amsterdam, The Netherlands
| | - Giulia Tagliabue
- Laboratory of Nanoscience for Energy Technologies (LNET), EPFL, 1015 Lausanne, Switzerland
| | - Angela Demetriadou
- School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, United Kingdom
| | - Prineha Narang
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
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31
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Huynh LTM, Trinh HD, Lee S, Yoon S. Plasmon-driven protodeboronation reactions in nanogaps. NANOSCALE 2020; 12:24062-24069. [PMID: 33245307 DOI: 10.1039/d0nr07023h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Boronic acids are the key compounds in Suzuki coupling reactions and in the detection of monosaccharides. The C-B bond cleavage deboronation is an important side reaction that lowers the Suzuki coupling reaction yield and even disables saccharide detection. Here, we report that protodeboronation occurs for 4-mercaptophenylboronic acid (MPBA) within narrow nanogaps between gold nanoparticles (AuNPs) and planar gold substrates. The irradiation of such nanoparticle-on-mirror (NPoM) systems at 785 nm drives the protodeboronation reaction to form benzenethiol (BT). Wavelength-dependence experiments, combined with dark-field single-particle scattering spectroscopy, reveal that excitation of the bonding dipole plasmon mode of the NPoM leads to the best efficiency. Among the excited plasmon decay pathways, the generation of hot charge carriers induces the protodeboronation of MPBA. The possibility of plasmonic thermal reactions is ruled out because external heating of the substrates does not cause the reaction to take place. A comparison of the reaction yield under ambient, Ar, and oxygen gas conditions reveals that hot charge carriers directly transfer to MPBA, which subsequently produces BT, but the presence of oxygen promotes the reaction by opening another hot-electron transfer channel. The protodeboronation reaction of MPBA is an important addition to the catalog of plasmon-driven chemical reactions, not only because the reaction is relevant to organic and analytical chemistry but also because it deepens our understanding of the hot carrier dynamics at the interface between plasmonic nanoparticles and molecules.
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Affiliation(s)
- Ly Thi Minh Huynh
- Department of Chemistry, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Korea.
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32
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Single Particle Approaches to Plasmon-Driven Catalysis. NANOMATERIALS 2020; 10:nano10122377. [PMID: 33260302 PMCID: PMC7761459 DOI: 10.3390/nano10122377] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 11/18/2020] [Accepted: 11/20/2020] [Indexed: 11/22/2022]
Abstract
Plasmonic nanoparticles have recently emerged as a promising platform for photocatalysis thanks to their ability to efficiently harvest and convert light into highly energetic charge carriers and heat. The catalytic properties of metallic nanoparticles, however, are typically measured in ensemble experiments. These measurements, while providing statistically significant information, often mask the intrinsic heterogeneity of the catalyst particles and their individual dynamic behavior. For this reason, single particle approaches are now emerging as a powerful tool to unveil the structure-function relationship of plasmonic nanocatalysts. In this Perspective, we highlight two such techniques based on far-field optical microscopy: surface-enhanced Raman spectroscopy and super-resolution fluorescence microscopy. We first discuss their working principles and then show how they are applied to the in-situ study of catalysis and photocatalysis on single plasmonic nanoparticles. To conclude, we provide our vision on how these techniques can be further applied to tackle current open questions in the field of plasmonic chemistry.
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33
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Liang W, Xiao Z, Xu H, Deng H, Li H, Chen W, Liu Z, Long Y. Ultranarrow-bandwidth planar hot electron photodetector based on coupled dual Tamm plasmons. OPTICS EXPRESS 2020; 28:31330-31344. [PMID: 33115108 DOI: 10.1364/oe.400258] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 09/24/2020] [Indexed: 06/11/2023]
Abstract
Hot electron photodetectors based on a planar structure of metal-insulator /semiconductor-metal (MIM/MSM) have attracted much attention due to the easy and cheap fabrication process and the possibility of detecting light with energy lower than the semiconductor band gap. For this type of device, however, hot electron photocurrent is restricted by the trade-off between the light absorption and the internal quantum efficiency (IQE) since high absorption usually occurs within thick metals and the IQE in this case is usually low. The trade-off is circumvented in this paper by proposing a new type of hot electron photodetector based on planar MIM structure and coupled dual Tamm plasmons (TPs), which has a structure of one-dimensional photonic crystals (1DPCs)/Au/TiO2/Au/1DPCs. The coupled modes of the dual TPs at the two 1DPCs/Au interfaces can lead to a high absorption of 98% in a 5 nm-thick Au layer. As a result, the responsivity of the conventional device with two Schottky junctions in series configuration reaches a high value of 9.78 mA/W at the wavelength of 800 nm. To further improve the device performance, devices with four Schottky junctions in parallel configuration are proposed to circumvent the hot electrons loss at the interface of the Au layer and the first TiO2 layer of the 1DPCs. Correspondingly, the hot electrons photocurrent doubles and reaches a higher value of 21.87 mA/W. Moreover, the bandwidth of the responsivity is less than 0.4 nm, the narrowest one when compared with that for the hot electron photodetectors reported so far in the published papers.
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34
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Yuan L, Lou M, Clark BD, Lou M, Zhou L, Tian S, Jacobson CR, Nordlander P, Halas NJ. Morphology-Dependent Reactivity of a Plasmonic Photocatalyst. ACS NANO 2020; 14:12054-12063. [PMID: 32790328 DOI: 10.1021/acsnano.0c05383] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The shape of a plasmonic nanoparticle strongly controls its light-matter interaction, which in turn affects how specific morphologies may be used in applications such as sensing, photodetection, and active pixel displays. Here, we show that particle shape also controls plasmonic photocatalytic activity. Three different Al nanocrystal morphologies, octopods, nanocubes, and nanocrystals, all with very similar plasmon resonance frequencies, were used as photocatalysts for the H2 dissociation reaction. We observe widely varying reaction rates for the three different morphologies. Octopods show a 10 times higher reaction rate than nanocrystals and a 5 times higher rate than nanocubes, with lower apparent activation energies than either nanocubes or nanocrystals by 45% and 49%, respectively. A theoretical model of hot electron direct transfer from photoexcited Al nanoparticles to H2 molecules is consistent with this observed morphological dependence. This research strongly suggests that nanoparticle geometry, in addition to plasmon resonance energy, is a critical factor in plasmonic photocatalyst design.
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Affiliation(s)
- Lin Yuan
- Department of Chemistry, Rice University, Houston, Texas 77005, United States
- Laboratory for Nanophotonics, Rice University, Houston, Texas 77005, United States
| | - Minhan Lou
- Department of Electrical and Computer Engineering, Rice University, Houston, Texas 77005, United States
- Laboratory for Nanophotonics, Rice University, Houston, Texas 77005, United States
| | - Benjamin D Clark
- Department of Chemistry, Rice University, Houston, Texas 77005, United States
- Laboratory for Nanophotonics, Rice University, Houston, Texas 77005, United States
| | - Minghe Lou
- Department of Chemistry, Rice University, Houston, Texas 77005, United States
- Laboratory for Nanophotonics, Rice University, Houston, Texas 77005, United States
| | - Linan Zhou
- Department of Chemistry, Rice University, Houston, Texas 77005, United States
- Laboratory for Nanophotonics, Rice University, Houston, Texas 77005, United States
| | - Shu Tian
- Department of Chemistry, Rice University, Houston, Texas 77005, United States
- Laboratory for Nanophotonics, Rice University, Houston, Texas 77005, United States
| | - Christian R Jacobson
- Department of Chemistry, Rice University, Houston, Texas 77005, United States
- Laboratory for Nanophotonics, Rice University, Houston, Texas 77005, United States
| | - Peter Nordlander
- Department of Electrical and Computer Engineering, Rice University, Houston, Texas 77005, United States
- Department of Physics & Astronomy, Rice University, Houston, Texas 77005, United States
- Laboratory for Nanophotonics, Rice University, Houston, Texas 77005, United States
| | - Naomi J Halas
- Department of Chemistry, Rice University, Houston, Texas 77005, United States
- Department of Electrical and Computer Engineering, Rice University, Houston, Texas 77005, United States
- Department of Physics & Astronomy, Rice University, Houston, Texas 77005, United States
- Laboratory for Nanophotonics, Rice University, Houston, Texas 77005, United States
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35
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Un IW, Sivan Y. Parametric study of temperature distribution in plasmon-assisted photocatalysis. NANOSCALE 2020; 12:17821-17832. [PMID: 32830835 DOI: 10.1039/d0nr03897k] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Recently, there has been a growing interest in the usage of mm-scale composites of plasmonic nanoparticles for enhancing the rates of chemical reactions; the effect was shown recently to be predominantly associated with the elevated temperature caused by illumination. Here, we study the dependence of the temperature distribution on the various parameters of these samples, and provide analytic expressions for simple cases. We show that since these systems are usually designed to absorb all the incoming light, the temperature distribution in them is weakly-dependent on the illumination spectrum, pulse duration, particle shape, size and density. Thus, changes in these parameters yield at most modest quantitative changes. We also show that the temperature distribution is linearly dependent on the beam radius and the thermal conductivity of the host. Finally, we study the sensitivity of the reaction rate to these parameters as a function of the activation energy and show how it manifests itself in various previous experimental reports. These results would simplify the optimization of photocatalysis experiments, as well as of other energy-related applications based on light harvesting for heat generation.
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Affiliation(s)
- Ieng Wai Un
- School of Electrical and Computer Engineering, Ben-Gurion University of the Negev, Israel.
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36
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Stroyuk OL, Kuchmy SY. Heterogeneous Photocatalytic Selective Reductive Transformations of Organic Compounds: a Review. THEOR EXP CHEM+ 2020. [DOI: 10.1007/s11237-020-09648-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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37
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Affiliation(s)
- Luis Martín-Moreno
- Instituto de Nanociencia y Materiales de Aragón (INMA) and Departamento de Física de la Materia Condensada, Consejo Superior de Investigaciones Científicas-Universidad de Zaragoza, Zaragoza, Spain.
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38
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Sistani M, Bartmann MG, Güsken NA, Oulton RF, Keshmiri H, Luong MA, Momtaz ZS, Den Hertog MI, Lugstein A. Plasmon-Driven Hot Electron Transfer at Atomically Sharp Metal-Semiconductor Nanojunctions. ACS PHOTONICS 2020; 7:1642-1648. [PMID: 32685608 PMCID: PMC7366502 DOI: 10.1021/acsphotonics.0c00557] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Indexed: 05/23/2023]
Abstract
Recent advances in guiding and localizing light at the nanoscale exposed the enormous potential of ultrascaled plasmonic devices. In this context, the decay of surface plasmons to hot carriers triggers a variety of applications in boosting the efficiency of energy-harvesting, photocatalysis, and photodetection. However, a detailed understanding of plasmonic hot carrier generation and, particularly, the transfer at metal-semiconductor interfaces is still elusive. In this paper, we introduce a monolithic metal-semiconductor (Al-Ge) heterostructure device, providing a platform to examine surface plasmon decay and hot electron transfer at an atomically sharp Schottky nanojunction. The gated metal-semiconductor heterojunction device features electrostatic control of the Schottky barrier height at the Al-Ge interface, enabling hot electron filtering. The ability of momentum matching and to control the energy distribution of plasmon-driven hot electron injection is demonstrated by controlling the interband electron transfer in Ge, leading to negative differential resistance.
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Affiliation(s)
- Masiar Sistani
- Institute of Solid
State Electronics, Technische Universität
Wien, Gußhausstraße 25-25a, 1040 Vienna, Austria
| | - Maximilian G. Bartmann
- Institute of Solid
State Electronics, Technische Universität
Wien, Gußhausstraße 25-25a, 1040 Vienna, Austria
| | - Nicholas A. Güsken
- The Blackett Laboratory,
Department of Physics, Imperial College
London, London SW7 2AZ, United Kingdom
| | - Rupert F. Oulton
- The Blackett Laboratory,
Department of Physics, Imperial College
London, London SW7 2AZ, United Kingdom
| | - Hamid Keshmiri
- Institute of Solid
State Electronics, Technische Universität
Wien, Gußhausstraße 25-25a, 1040 Vienna, Austria
| | - Minh Anh Luong
- Univ. Grenoble Alpes, CEA, INAC, MEM, F-38000 Grenoble, France
| | - Zahra Sadre Momtaz
- Institut NEEL CNRS/UGA UPR2940, 25 avenue des Martyrs, F-38042 Grenoble, France
| | | | - Alois Lugstein
- Institute of Solid
State Electronics, Technische Universität
Wien, Gußhausstraße 25-25a, 1040 Vienna, Austria
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39
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Reddy H, Wang K, Kudyshev Z, Zhu L, Yan S, Vezzoli A, Higgins SJ, Gavini V, Boltasseva A, Reddy P, Shalaev VM, Meyhofer E. Determining plasmonic hot-carrier energy
distributions via single-molecule transport
measurements. Science 2020; 369:423-426. [DOI: 10.1126/science.abb3457] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2020] [Accepted: 05/21/2020] [Indexed: 01/07/2023]
Abstract
Hot carriers in plasmonic nanostructures,
generated via plasmon decay, play key roles in
applications such as photocatalysis and in
photodetectors that circumvent bandgap
limitations. However, direct experimental
quantification of steady-state energy
distributions of hot carriers in nanostructures
has so far been lacking. We present transport
measurements from single-molecule junctions,
created by trapping suitably chosen single
molecules between an ultrathin gold film
supporting surface plasmon polaritons and a
scanning probe tip, that can provide
quantification of plasmonic hot-carrier
distributions. Our results show that Landau
damping is the dominant physical mechanism of
hot-carrier generation in nanoscale systems with
strong confinement. The technique developed in
this work will enable quantification of plasmonic
hot-carrier distributions in nanophotonic and
plasmonic devices.
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Affiliation(s)
- Harsha Reddy
- School of Electrical and Computer
Engineering, Purdue University, West Lafayette, IN
47907, USA
| | - Kun Wang
- Department of Mechanical Engineering,
University of Michigan, Ann Arbor, MI 48109,
USA
| | - Zhaxylyk Kudyshev
- School of Electrical and Computer
Engineering, Purdue University, West Lafayette, IN
47907, USA
- Center for Science of Information,
Purdue University, West Lafayette, IN 47907,
USA
| | - Linxiao Zhu
- Department of Mechanical Engineering,
University of Michigan, Ann Arbor, MI 48109,
USA
| | - Shen Yan
- Department of Mechanical Engineering,
University of Michigan, Ann Arbor, MI 48109,
USA
| | - Andrea Vezzoli
- Department of Chemistry, University
of Liverpool, Liverpool L69 7ZD, UK
| | - Simon J. Higgins
- Department of Chemistry, University
of Liverpool, Liverpool L69 7ZD, UK
| | - Vikram Gavini
- Department of Mechanical Engineering,
University of Michigan, Ann Arbor, MI 48109,
USA
- Department of Materials Science and
Engineering, University of Michigan, Ann Arbor, MI
48109, USA
| | - Alexandra Boltasseva
- School of Electrical and Computer
Engineering, Purdue University, West Lafayette, IN
47907, USA
| | - Pramod Reddy
- Department of Mechanical Engineering,
University of Michigan, Ann Arbor, MI 48109,
USA
- Department of Materials Science and
Engineering, University of Michigan, Ann Arbor, MI
48109, USA
| | - Vladimir M. Shalaev
- School of Electrical and Computer
Engineering, Purdue University, West Lafayette, IN
47907, USA
| | - Edgar Meyhofer
- Department of Mechanical Engineering,
University of Michigan, Ann Arbor, MI 48109,
USA
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40
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Foerster B, Hartelt M, Collins SSE, Aeschlimann M, Link S, Sönnichsen C. Interfacial States Cause Equal Decay of Plasmons and Hot Electrons at Gold-Metal Oxide Interfaces. NANO LETTERS 2020; 20:3338-3343. [PMID: 32216365 DOI: 10.1021/acs.nanolett.0c00223] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We compare the decay of plasmons and "conventional" hot electrons within the same series of gold/metal oxide interfaces. We found an accelerated decay of hot electrons at gold-metal oxide interfaces with decreasing band gap of the oxide material. The decay is accelerated by the increased phase space for electron scattering caused by additional interfacial states. Since plasmons decay faster within the same series of gold-metal oxide interfaces, we propose plasmons are able to decay into the same interfacial states as hot electrons. The similarity of plasmon damping to conventional hot electron decay implies that many classical surface analysis techniques and theoretical concepts are transferable to plasmonic systems. Our results support the mechanism of direct decay of plasmons into interfacial hot electron pairs but the utility of these interfacial states for charge transfer reactions remains to be investigated.
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Affiliation(s)
- Benjamin Foerster
- Institute of Physical Chemistry, University of Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany
- Graduate School for Excellence Materials Science in Mainz, Johannes Gutenberg University Mainz, Staudingerweg 9, D-55128 Mainz, Germany
| | - Michael Hartelt
- Department of Physics and Research Center OPTIMAS, University of Kaiserslautern, 67663 Kaiserslautern, Germany
| | - Sean S E Collins
- Department of Chemistry, Rice University, Texas 77005, United States
| | - Martin Aeschlimann
- Department of Physics and Research Center OPTIMAS, University of Kaiserslautern, 67663 Kaiserslautern, Germany
| | - Stephan Link
- Department of Chemistry, Rice University, Texas 77005, United States
- Department of Electrical and Computer Engineering, Rice University, Texas 77005, United States
| | - Carsten Sönnichsen
- Institute of Physical Chemistry, University of Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany
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41
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Ou W, Zhou B, Shen J, Lo TW, Lei D, Li S, Zhong J, Li YY, Lu J. Thermal and Nonthermal Effects in Plasmon‐Mediated Electrochemistry at Nanostructured Ag Electrodes. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202001152] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Weihui Ou
- Hong Kong Branch of National Precious Metals Material Engineering Research CentreDepartment of Material Science and EngineeringCity University of Hong Kong Hong Kong 999077 China
- Center of Super-Diamond and Advanced Films (COSDAF)City University of Hong Kong Tat Chee Avenue 83, Kowloon Hong Kong 999077 China
- Department of Mechanical EngineeringCity University of Hong Kong Hong Kong 999077 China
- Department of Materials Science and EngineeringCity University of Hong Kong Hong Kong 999077 China
| | - Binbin Zhou
- Hong Kong Branch of National Precious Metals Material Engineering Research CentreDepartment of Material Science and EngineeringCity University of Hong Kong Hong Kong 999077 China
- Center of Super-Diamond and Advanced Films (COSDAF)City University of Hong Kong Tat Chee Avenue 83, Kowloon Hong Kong 999077 China
- Department of Mechanical EngineeringCity University of Hong Kong Hong Kong 999077 China
- Department of Materials Science and EngineeringCity University of Hong Kong Hong Kong 999077 China
| | - Junda Shen
- Hong Kong Branch of National Precious Metals Material Engineering Research CentreDepartment of Material Science and EngineeringCity University of Hong Kong Hong Kong 999077 China
- Center of Super-Diamond and Advanced Films (COSDAF)City University of Hong Kong Tat Chee Avenue 83, Kowloon Hong Kong 999077 China
| | - Tsz Wing Lo
- Department of Applied PhysicsThe Hong Kong Polytechnic University Hong Kong 999077 China
| | - Dangyuan Lei
- Department of Materials Science and EngineeringCity University of Hong Kong Hong Kong 999077 China
| | - Shengliang Li
- Department of ChemistryCity University of Hong Kong Hong Kong 999077 China
| | - Jing Zhong
- Hong Kong Branch of National Precious Metals Material Engineering Research CentreDepartment of Material Science and EngineeringCity University of Hong Kong Hong Kong 999077 China
- Center of Super-Diamond and Advanced Films (COSDAF)City University of Hong Kong Tat Chee Avenue 83, Kowloon Hong Kong 999077 China
| | - Yang Yang Li
- Hong Kong Branch of National Precious Metals Material Engineering Research CentreDepartment of Material Science and EngineeringCity University of Hong Kong Hong Kong 999077 China
- Center of Super-Diamond and Advanced Films (COSDAF)City University of Hong Kong Tat Chee Avenue 83, Kowloon Hong Kong 999077 China
- Department of Materials Science and EngineeringCity University of Hong Kong Hong Kong 999077 China
| | - Jian Lu
- Hong Kong Branch of National Precious Metals Material Engineering Research CentreDepartment of Material Science and EngineeringCity University of Hong Kong Hong Kong 999077 China
- Department of Mechanical EngineeringCity University of Hong Kong Hong Kong 999077 China
- Department of Materials Science and EngineeringCity University of Hong Kong Hong Kong 999077 China
- City University of Hong Kong Shenzhen Research InstituteGreater Bay Joint Division, Shenyang National Laboratory for Materials Science Shenzhen China
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42
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Hassani Gangaraj SA, Monticone F. Physical Violations of the Bulk-Edge Correspondence in Topological Electromagnetics. PHYSICAL REVIEW LETTERS 2020; 124:153901. [PMID: 32357023 DOI: 10.1103/physrevlett.124.153901] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Accepted: 03/25/2020] [Indexed: 06/11/2023]
Abstract
In this Letter, we discuss two general classes of apparent violations of the bulk-edge correspondence principle for continuous topological photonic materials, associated with the asymptotic behavior of the surface modes for diverging wave numbers. Considering a nonreciprocal plasma as a model system, we show that the inclusion of spatial dispersion (e.g., hydrodynamic nonlocality) formally restores the bulk-edge correspondence by avoiding an unphysical response at large wave numbers. Most importantly, however, our findings show that, for the considered cases, the correspondence principle is physically violated for all practical purposes, as a result of the unavoidable attenuation of highly confined modes even if all materials are assumed perfect, with zero intrinsic bulk losses, due to confinement-induced Landau damping or nonlocality-induced radiation leakage. Our work helps clarifying the subtle and rich topological wave physics of continuous media.
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Affiliation(s)
- S Ali Hassani Gangaraj
- School of Electrical and Computer Engineering, Cornell University, Ithaca, New York 14853, USA
| | - Francesco Monticone
- School of Electrical and Computer Engineering, Cornell University, Ithaca, New York 14853, USA
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43
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Shim JH, Syed AA, Kim JI, Piao HG, Lee SH, Park SY, Choi YS, Lee KM, Kim HJ, Jeong JR, Hong JI, Kim DE, Kim DH. Role of non-thermal electrons in ultrafast spin dynamics of ferromagnetic multilayer. Sci Rep 2020; 10:6355. [PMID: 32286462 PMCID: PMC7156415 DOI: 10.1038/s41598-020-63452-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Accepted: 02/27/2020] [Indexed: 11/09/2022] Open
Abstract
Understanding of ultrafast spin dynamics is crucial for future spintronic applications. In particular, the role of non-thermal electrons needs further investigation in order to gain a fundamental understanding of photoinduced demagnetization and remagnetization on a femtosecond time scale. We experimentally demonstrate that non-thermal electrons existing in the very early phase of the photoinduced demagnetization process play a key role in governing the overall ultrafast spin dynamics behavior. We simultaneously measured the time-resolved reflectivity (TR-R) and the magneto-optical Kerr effect (TR-MOKE) for a Co/Pt multilayer film. By using an extended three-temperature model (E3TM), the quantitative analysis, including non-thermal electron energy transfer into the subsystem (thermal electron, lattice, and spin), reveals that energy flow from non-thermal electrons plays a decisive role in determining the type I and II photoinduced spin dynamics behavior. Our finding proposes a new mechanism for understanding ultrafast remagnetization dynamics.
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Affiliation(s)
- Je-Ho Shim
- Department of Physics and Center for Attosecond Science and Technology, POSTECH, Pohang, 37673, South Korea.,Max Planck POSTECH/KOREA Research Initiative, Pohang, 37673, South Korea
| | - Akbar Ali Syed
- Department of Physics and Center for Attosecond Science and Technology, POSTECH, Pohang, 37673, South Korea.,Max Planck POSTECH/KOREA Research Initiative, Pohang, 37673, South Korea
| | - Jea-Il Kim
- Department of Physics and Center for Attosecond Science and Technology, POSTECH, Pohang, 37673, South Korea.,Max Planck POSTECH/KOREA Research Initiative, Pohang, 37673, South Korea
| | - Hong-Guang Piao
- Department of Physics, Chungbuk National University, Cheongju, 28644, South Korea.,College of Science, China Three Gorges University, Yichang, 443002, P. R. China
| | - Sang-Hyuk Lee
- Department of Physics, Chungbuk National University, Cheongju, 28644, South Korea.,Division of Industrial Metrology, Korea Research Institute of Standards and Science, Daejeon, 34113, South Korea
| | - Seung-Young Park
- Spin Engineering Physics Team, Korea Basic Science Institute, Daejeon, 34133, South Korea
| | - Yeon Suk Choi
- Spin Engineering Physics Team, Korea Basic Science Institute, Daejeon, 34133, South Korea
| | - Kyung Min Lee
- Department of Material Science and Engineering and Graduate School of Energy Science and Technology, Chungnam National University, Daejeon, 34134, South Korea
| | - Hyun-Joong Kim
- Department of Emerging Materials Science, Daegu Gyeongbuk Institute of Science and Technology, Daegu, 42988, South Korea
| | - Jong-Ryul Jeong
- Department of Material Science and Engineering and Graduate School of Energy Science and Technology, Chungnam National University, Daejeon, 34134, South Korea
| | - Jung-Il Hong
- Department of Emerging Materials Science, Daegu Gyeongbuk Institute of Science and Technology, Daegu, 42988, South Korea
| | - Dong Eon Kim
- Department of Physics and Center for Attosecond Science and Technology, POSTECH, Pohang, 37673, South Korea. .,Max Planck POSTECH/KOREA Research Initiative, Pohang, 37673, South Korea.
| | - Dong-Hyun Kim
- Department of Physics, Chungbuk National University, Cheongju, 28644, South Korea.
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44
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Román Castellanos L, Kahk JM, Hess O, Lischner J. Generation of plasmonic hot carriers from d-bands in metallic nanoparticles. J Chem Phys 2020; 152:104111. [PMID: 32171204 DOI: 10.1063/5.0003123] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We present an approach to master the well-known challenge of calculating the contribution of d-bands to plasmon-induced hot carrier rates in metallic nanoparticles. We generalize the widely used spherical well model for the nanoparticle wavefunctions to flat d-bands using the envelope function technique. Using Fermi's golden rule, we calculate the generation rates of hot carriers after the decay of the plasmon due to transitions either from a d-band state to an sp-band state or from an sp-band state to another sp-band state. We apply this formalism to spherical silver nanoparticles with radii up to 20 nm and also study the dependence of hot carrier rates on the energy of the d-bands. We find that for nanoparticles with a radius less than 2.5 nm, sp-band state to sp-band state transitions dominate hot carrier production, while d-band state to sp-band state transitions give the largest contribution for larger nanoparticles.
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Affiliation(s)
| | - Juhan Matthias Kahk
- Department of Materials, Imperial College London, London SW7 2AZ, United Kingdom
| | - Ortwin Hess
- Department of Physics, Imperial College London, London SW7 2AZ, United Kingdom
| | - Johannes Lischner
- Department of Materials, Imperial College London, London SW7 2AZ, United Kingdom
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45
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Ou W, Zhou B, Shen J, Lo TW, Lei D, Li S, Zhong J, Li YY, Lu J. Thermal and Nonthermal Effects in Plasmon-Mediated Electrochemistry at Nanostructured Ag Electrodes. Angew Chem Int Ed Engl 2020; 59:6790-6793. [PMID: 32040261 DOI: 10.1002/anie.202001152] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Indexed: 11/10/2022]
Abstract
Hot carriers (HCs) and thermal effects, stemming from plasmon decays, are crucial for most plasmonic applications. However, quantifying these two effects remains extremely challenging due to the experimental difficulty in accurately measuring the temperature at reaction sites. Herein, we provide a novel strategy to disentangle HCs from photothermal effects based on the different traits of heat dissipation (long range) and HCs transport (short range), and quantitatively uncover the dominant and potential-dependent role of photothermal effect by investigating the rapid- and slow-response currents in plasmon-mediated electrochemistry at nanostructured Ag electrode. Furthermore, the plasmoelectric surface potential is found to contribute to the rapid-response currents, which is absent in the previous studies.
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Affiliation(s)
- Weihui Ou
- Hong Kong Branch of National Precious Metals Material Engineering Research Centre, Department of Material Science and Engineering, City University of Hong Kong, Hong Kong, 999077, China.,Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, Tat Chee Avenue 83, Kowloon, Hong Kong, 999077, China.,Department of Mechanical Engineering, City University of Hong Kong, Hong Kong, 999077, China.,Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong, 999077, China
| | - Binbin Zhou
- Hong Kong Branch of National Precious Metals Material Engineering Research Centre, Department of Material Science and Engineering, City University of Hong Kong, Hong Kong, 999077, China.,Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, Tat Chee Avenue 83, Kowloon, Hong Kong, 999077, China.,Department of Mechanical Engineering, City University of Hong Kong, Hong Kong, 999077, China.,Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong, 999077, China
| | - Junda Shen
- Hong Kong Branch of National Precious Metals Material Engineering Research Centre, Department of Material Science and Engineering, City University of Hong Kong, Hong Kong, 999077, China.,Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, Tat Chee Avenue 83, Kowloon, Hong Kong, 999077, China
| | - Tsz Wing Lo
- Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong, 999077, China
| | - Dangyuan Lei
- Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong, 999077, China
| | - Shengliang Li
- Department of Chemistry, City University of Hong Kong, Hong Kong, 999077, China
| | - Jing Zhong
- Hong Kong Branch of National Precious Metals Material Engineering Research Centre, Department of Material Science and Engineering, City University of Hong Kong, Hong Kong, 999077, China.,Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, Tat Chee Avenue 83, Kowloon, Hong Kong, 999077, China
| | - Yang Yang Li
- Hong Kong Branch of National Precious Metals Material Engineering Research Centre, Department of Material Science and Engineering, City University of Hong Kong, Hong Kong, 999077, China.,Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, Tat Chee Avenue 83, Kowloon, Hong Kong, 999077, China.,Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong, 999077, China
| | - Jian Lu
- Hong Kong Branch of National Precious Metals Material Engineering Research Centre, Department of Material Science and Engineering, City University of Hong Kong, Hong Kong, 999077, China.,Department of Mechanical Engineering, City University of Hong Kong, Hong Kong, 999077, China.,Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong, 999077, China.,City University of Hong Kong Shenzhen Research Institute, Greater Bay Joint Division, Shenyang National Laboratory for Materials Science, Shenzhen, China
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46
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Rodio M, Graf M, Schulz F, Mueller NS, Eich M, Lange H. Experimental Evidence for Nonthermal Contributions to Plasmon-Enhanced Electrochemical Oxidation Reactions. ACS Catal 2020. [DOI: 10.1021/acscatal.9b05401] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Marina Rodio
- Hamburg Centre for Advanced Imaging of Matter, Luruper Chaussee 149, Hamburg 22761, Germany
- Institute of Physical Chemistry, University of Hamburg, Martin-Luther-King Platz 6, Hamburg 20146, Germany
| | - Matthias Graf
- Institute of Materials Research, Helmholtz-Zentrum Geesthacht, Max-Planck-Strasse 1, Geesthacht D-21502, Germany
- Institute of Optical and Electronic Materials, Hamburg University of Technology, Eissendorfer Strasse 38, Hamburg D-21073, Germany
| | - Florian Schulz
- Institute of Physical Chemistry, University of Hamburg, Martin-Luther-King Platz 6, Hamburg 20146, Germany
| | - Niclas S. Mueller
- Department of Physics, Freie Universitat Berlin, Arnimallee 14, Berlin D-14195, Germany
| | - Manfred Eich
- Institute of Materials Research, Helmholtz-Zentrum Geesthacht, Max-Planck-Strasse 1, Geesthacht D-21502, Germany
- Institute of Optical and Electronic Materials, Hamburg University of Technology, Eissendorfer Strasse 38, Hamburg D-21073, Germany
| | - Holger Lange
- Hamburg Centre for Advanced Imaging of Matter, Luruper Chaussee 149, Hamburg 22761, Germany
- Institute of Physical Chemistry, University of Hamburg, Martin-Luther-King Platz 6, Hamburg 20146, Germany
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47
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Catone D, Di Mario L, Martelli F, O'Keeffe P, Paladini A, Stefano Pelli Cresi J, Sivan AK, Tian L, Toschi F, Turchini S. Ultrafast optical spectroscopy of semiconducting and plasmonic nanostructures and their hybrids. NANOTECHNOLOGY 2020; 32:025703. [PMID: 32937606 DOI: 10.1088/1361-6528/abb907] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The knowledge of the carrier dynamics in nanostructures is of fundamental importance for the development of (opto)electronic devices. This is true for semiconducting nanostructures as well as for plasmonic nanoparticles (NPs). Indeed, improvement of photocatalytic efficiencies by combining semiconductor and plasmonic nanostructures is one of the reasons why their ultrafast dynamics are intensively studied. In this work, we will review our activity on ultrafast spectroscopy in nanostructures carried out in the recently established EuroFEL Support Laboratory. We have investigated the dynamical plasmonic responses of metal NPs both in solution and in 2D and 3D arrays on surfaces, with particular attention being paid to the effects of the NP shape and to the conversion of absorbed light into heat on a nano-localized scale. We will summarize the results obtained on the carrier dynamics in nanostructured perovskites with emphasis on the hot-carrier dynamics and in semiconductor nanosystems such as ZnSe and Si nanowires, with particular attention to the band-gap bleaching dynamics. Subsequently, the study of semiconductor-metal NP hybrids, such as CeO2-Ag NPs, ZnSe-Ag NPs and ZnSe-Au NPs, allows the discussion of interaction mechanisms such as charge carrier transfer and Förster interaction. Finally, we assess an alternative method for the sensitization of wide band gap semiconductors to visible light by discussing the relationship between the carrier dynamics of TiO2 NPs and V-doped TiO2 NPs and their catalytic properties.
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Affiliation(s)
- Daniele Catone
- Istituto di Struttura della Materia-CNR (ISM-CNR), Division of Ultrafast Processes in Materials (FLASHit), 100 Via del Fosso del Cavaliere, 00133 Rome, Italy
| | - Lorenzo Di Mario
- Istituto di Struttura della Materia-CNR (ISM-CNR), Division of Ultrafast Processes in Materials (FLASHit), 100 Via del Fosso del Cavaliere, 00133 Rome, Italy
| | - Faustino Martelli
- CNR-IMM, Area della Ricerca di Roma Tor Vergata, 100 Via del Fosso del Cavaliere, 00133 Rome, Italy
| | - Patrick O'Keeffe
- Istituto di Struttura della Materia-CNR (ISM-CNR), Division of Ultrafast Processes in Materials (FLASHit), 00015 Monterotondo Scalo, Italy
| | - Alessandra Paladini
- Istituto di Struttura della Materia-CNR (ISM-CNR), Division of Ultrafast Processes in Materials (FLASHit), 00015 Monterotondo Scalo, Italy
| | - Jacopo Stefano Pelli Cresi
- Istituto di Struttura della Materia-CNR (ISM-CNR), Division of Ultrafast Processes in Materials (FLASHit), 00015 Monterotondo Scalo, Italy
| | - Aswathi K Sivan
- CNR-IMM, Area della Ricerca di Roma Tor Vergata, 100 Via del Fosso del Cavaliere, 00133 Rome, Italy
| | - Lin Tian
- CNR-IMM, Area della Ricerca di Roma Tor Vergata, 100 Via del Fosso del Cavaliere, 00133 Rome, Italy
| | - Francesco Toschi
- Istituto di Struttura della Materia-CNR (ISM-CNR), Division of Ultrafast Processes in Materials (FLASHit), 00015 Monterotondo Scalo, Italy
| | - Stefano Turchini
- Istituto di Struttura della Materia-CNR (ISM-CNR), Division of Ultrafast Processes in Materials (FLASHit), 100 Via del Fosso del Cavaliere, 00133 Rome, Italy
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48
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Sang L, Lei L, Burda C. Electrochemical Fabrication of rGO-embedded Ag-TiO 2 Nanoring/Nanotube Arrays for Plasmonic Solar Water Splitting. NANO-MICRO LETTERS 2019; 11:97. [PMID: 34138041 PMCID: PMC7770785 DOI: 10.1007/s40820-019-0329-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Accepted: 10/23/2019] [Indexed: 05/23/2023]
Abstract
Effective utilization of hot electrons generated from the decay of surface plasmon resonance in metal nanoparticles is conductive to improve solar water splitting efficiency. Herein, Ag nanoparticles and reduced graphene oxide (rGO) co-decorated hierarchical TiO2 nanoring/nanotube arrays (TiO2 R/T) were facilely fabricated by using two-step electrochemical anodization, electrodeposition, and photoreduction methods. Comparative studies were conducted to elucidate the effects of rGO and Ag on the morphology, photoresponse, charge transfer, and photoelectric properties of TiO2. Firstly, scanning electron microscope images confirm that the Ag nanoparticles adhered on TiO2 R/T and TiO2 R/T-rGO have similar diameter of 20 nm except for TiO2 R-rGO/T. Then, the UV-Vis DRS and scatter spectra reveal that the optical property of the Ag-TiO2 R/T-rGO ternary composite is enhanced, ascribing to the visible light absorption of plasmonic Ag nanoparticles and the weakening effect of rGO on light scattering. Meanwhile, intensity-modulated photocurrent spectroscopy and photoluminescence spectra demonstrate that rGO can promote the hot electrons transfer from Ag nanoparticles to Ti substrate, reducing the photogenerated electron-hole recombination. Finally, Ag-TiO2 R/T-rGO photoanode exhibits high photocurrent density (0.98 mA cm-2) and photovoltage (0.90 V), and the stable H2 evolution rate of 413 μL h-1 cm-2 within 1.5 h under AM 1.5 which exceeds by 1.30 times than that of pristine TiO2 R/T. In line with the above results, this work provides a reliable route synergizing rGO with plasmonic metal nanoparticles for photocatalysis, in which, rGO presents a broad absorption spectrum and effective photogenerated electrons transfer.
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Affiliation(s)
- Lixia Sang
- Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Ministry of Education and Key Laboratory of Heat Transfer and Energy Conversion, Beijing Municipality, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing, 100124, People's Republic of China.
| | - Lei Lei
- Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Ministry of Education and Key Laboratory of Heat Transfer and Energy Conversion, Beijing Municipality, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing, 100124, People's Republic of China
| | - Clemens Burda
- Department of Chemistry, Center for Chemical Dynamics and Nanomaterials Research, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH, 44106, USA
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49
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Gargiulo J, Berté R, Li Y, Maier SA, Cortés E. From Optical to Chemical Hot Spots in Plasmonics. Acc Chem Res 2019; 52:2525-2535. [PMID: 31430119 DOI: 10.1021/acs.accounts.9b00234] [Citation(s) in RCA: 79] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
In recent years, the possibility to induce chemical transformations by using tunable plasmonic modes has opened the question of whether we can control or create chemical hot spots in these systems. This can be rationalized as the reactive analogue of the well-established concept of optical hot spots, which have drawn a great deal of attention to plasmonic nanostructures for their ability to circumvent the far-field diffraction limit of conventional optical elements. Although optical hot spots can be mainly defined by the geometry and permittivity of the nanostructures, the degrees of freedom influencing their photocatalytic properties appear to be much more numerous. In fact, the reactivity of plasmonic systems are deeply influenced by the dynamics and interplay of photons, plasmon-polaritons, carriers, phonons, and molecular states. These degrees of freedom can affect the reaction rates, the product selectivity, or the spatial localization of a chemical reaction. In this Account, we discuss the oportunities to control chemical hot spots by tuning the cascade of events that follows the excitation and decay of plasmonic modes in nanostructures. We discuss a series of techniques to spatially map and image plasmonic nanoscale reactivity at the single photocatalyst level. We show how to optimize the reactivity of carriers by manipulating their excitation and decay mechanisms in plasmonic nanoparticles. In addition, the tailored generation of non-thermal phonons in metallic nanostructures and their dissipation is shown as a promise to understand and exploit thermal photocatalysis at the nanoscale. Understanding and controlling these processes is essential for the rational design of solar nanometric photocatalysts. Nevertheless, the ultimate capability of a plasmonic photocatalyst to trigger a chemical reaction is correlated to its ability to navigate through, or even modify, the potential energy surface of a given chemical reaction. Here we reunite both worlds, the plasmonic photocatalysts and the molecular ones, identifying different energy transfer pathways and their influence on selectivity and efficiency of chemical reactions. We foresee that the migration from optical to chemical hot spots will greatly assist the understanding of ongoing plasmonic chemistry.
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Affiliation(s)
- Julian Gargiulo
- Chair in Hybrid Nanosystems, Nanoinstitute Munich, Faculty of Physics, Ludwig-Maximilians-Universität München, 80539 München, Germany
| | - Rodrigo Berté
- Chair in Hybrid Nanosystems, Nanoinstitute Munich, Faculty of Physics, Ludwig-Maximilians-Universität München, 80539 München, Germany
| | - Yi Li
- Chair in Hybrid Nanosystems, Nanoinstitute Munich, Faculty of Physics, Ludwig-Maximilians-Universität München, 80539 München, Germany
| | - Stefan A. Maier
- Chair in Hybrid Nanosystems, Nanoinstitute Munich, Faculty of Physics, Ludwig-Maximilians-Universität München, 80539 München, Germany
- Department of Physics, Imperial College London, London SW7 2AZ, UK
| | - Emiliano Cortés
- Chair in Hybrid Nanosystems, Nanoinstitute Munich, Faculty of Physics, Ludwig-Maximilians-Universität München, 80539 München, Germany
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50
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Pensa E, Gargiulo J, Lauri A, Schlücker S, Cortés E, Maier SA. Spectral Screening of the Energy of Hot Holes over a Particle Plasmon Resonance. NANO LETTERS 2019; 19:1867-1874. [PMID: 30789274 DOI: 10.1021/acs.nanolett.8b04950] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Plasmonic hot carriers have been recently identified as key elements for photocatalysis at visible wavelengths. The possibility to transfer energy between metal plasmonic nanoparticles and nearby molecules depends not only on carrier generation and collection efficiencies but also on their energy at the metal-molecule interface. Here an energy screening study was performed by monitoring the aniline electro-polymerization reaction via an illuminated 80 nm gold nanoparticle. Our results show that plasmon excitation reduces the energy required to start the polymerization reaction as much as 0.24 eV. Three possible photocatalytic mechanisms were explored: the enhanced near field of the illuminated particle, the temperature increase at the metal-liquid interface, and the excited electron-hole pairs. This last phenomenon is found to be the one contributing most prominently to the observed energy reduction.
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Affiliation(s)
- Evangelina Pensa
- The Blackett Laboratory, Department of Physics , Imperial College London , London SW7 2AZ , United Kingdom
| | - Julian Gargiulo
- The Blackett Laboratory, Department of Physics , Imperial College London , London SW7 2AZ , United Kingdom
| | - Alberto Lauri
- The Blackett Laboratory, Department of Physics , Imperial College London , London SW7 2AZ , United Kingdom
| | - Sebastian Schlücker
- Chair of Physical Chemistry I, Department of Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE) , University of Duisburg-Essen , Universitätsstraße 5, 45141 Essen , Germany
| | - Emiliano Cortés
- The Blackett Laboratory, Department of Physics , Imperial College London , London SW7 2AZ , United Kingdom
- Chair in Hybrid Nanosystems, Nanoinstitute Munich, Faculty of Physics , Ludwig-Maximilians-Universität München , 80539 München , Germany
| | - Stefan A Maier
- The Blackett Laboratory, Department of Physics , Imperial College London , London SW7 2AZ , United Kingdom
- Chair in Hybrid Nanosystems, Nanoinstitute Munich, Faculty of Physics , Ludwig-Maximilians-Universität München , 80539 München , Germany
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