1301
|
Nano Sensing and Energy Conversion Using Surface Plasmon Resonance (SPR). MATERIALS 2015; 8:4332-4343. [PMID: 28793443 PMCID: PMC5455621 DOI: 10.3390/ma8074332] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/01/2015] [Revised: 06/20/2015] [Accepted: 06/26/2015] [Indexed: 11/17/2022]
Abstract
Nanophotonic technique has been attracting much attention in applications of nano-bio-chemical sensing and energy conversion of solar energy harvesting and enhanced energy transfer. One approach for nano-bio-chemical sensing is surface plasmon resonance (SPR) imaging, which can detect the material properties, such as density, ion concentration, temperature, and effective refractive index in high sensitivity, label-free, and real-time under ambient conditions. Recent study shows that SPR can successfully detect the concentration variation of nanofluids during evaporation-induced self-assembly process. Spoof surface plasmon resonance based on multilayer metallo-dielectric hyperbolic metamaterials demonstrate SPR dispersion control, which can be combined with SPR imaging, to characterize high refractive index materials because of its exotic optical properties. Furthermore, nano-biophotonics could enable innovative energy conversion such as the increase of absorption and emission efficiency and the perfect absorption. Localized SPR using metal nanoparticles show highly enhanced absorption in solar energy harvesting. Three-dimensional hyperbolic metamaterial cavity nanostructure shows enhanced spontaneous emission. Recently ultrathin film perfect absorber is demonstrated with the film thickness is as low as ~1/50th of the operating wavelength using epsilon-near-zero (ENZ) phenomena at the wavelength close to SPR. It is expected to provide a breakthrough in sensing and energy conversion applications using the exotic optical properties based on the nanophotonic technique.
Collapse
|
1302
|
Distinguishing between plasmon-induced and photoexcited carriers in a device geometry. Nat Commun 2015; 6:7797. [PMID: 26165521 PMCID: PMC4510964 DOI: 10.1038/ncomms8797] [Citation(s) in RCA: 160] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Accepted: 06/11/2015] [Indexed: 12/22/2022] Open
Abstract
The use of surface plasmons, charge density oscillations of conduction electrons of metallic nanostructures, to boost the efficiency of light-harvesting devices through increased light-matter interactions could drastically alter how sunlight is converted into electricity or fuels. These excitations can decay directly into energetic electron–hole pairs, useful for photocurrent generation or photocatalysis. However, the mechanisms behind plasmonic carrier generation remain poorly understood. Here we use nanowire-based hot-carrier devices on a wide-bandgap semiconductor to show that plasmonic carrier generation is proportional to internal field-intensity enhancement and occurs independently of bulk absorption. We also show that plasmon-induced hot electrons have higher energies than carriers generated by direct excitation and that reducing the barrier height allows for the collection of carriers from plasmons and direct photoexcitation. Our results provide a route to increasing the efficiency of plasmonic hot-carrier devices, which could lead to more efficient devices for converting sunlight into usable energy. Plasmonic excitations of electrons in metallic nanostructures are promising for the enhanced conversion of light in semiconductor solar cells. Here, the authors are able to experimentally distinguish the absorption phenomena of plasmonic carrier generation and excitation of carriers by light absorption.
Collapse
|
1303
|
Zhang Y, May V. Theory of molecule metal nano-particle interaction: Quantum description of plasmonic lasing. J Chem Phys 2015; 142:224702. [DOI: 10.1063/1.4921724] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Affiliation(s)
- Yuan Zhang
- Institute für Physik, Humboldt-Universität zu Berlin, Netwonstraße 15, D-12489 Berlin, Germany
| | - Volkhard May
- Institute für Physik, Humboldt-Universität zu Berlin, Netwonstraße 15, D-12489 Berlin, Germany
| |
Collapse
|
1304
|
Jiao Y, Hellman A, Fang Y, Gao S, Käll M. Schottky barrier formation and band bending revealed by first- principles calculations. Sci Rep 2015; 5:11374. [PMID: 26065401 PMCID: PMC4464327 DOI: 10.1038/srep11374] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2015] [Accepted: 05/26/2015] [Indexed: 11/09/2022] Open
Abstract
The formation of a Schottky barrier at the metal-semiconductor interface is widely utilised in semiconductor devices. With the emerging of novel Schottky barrier based nanoelectronics, a further microscopic understanding of this interface is in high demand. Here we provide an atomistic insight into potential barrier formation and band bending by ab initio simulations and model analysis of a prototype Schottky diode, i.e., niobium doped rutile titania in contact with gold (Au/Nb:TiO2). The local Schottky barrier height is found to vary between 0 and 1.26 eV depending on the position of the dopant. The band bending is caused by a dopant induced dipole field between the interface and the dopant site, whereas the pristine Au/TiO2 interface does not show any band bending. These findings open the possibility for atomic scale optimisation of the Schottky barrier and light harvesting in metal-semiconductor nanostructures.
Collapse
Affiliation(s)
- Yang Jiao
- Department of Applied Physics, Chalmers University of Technology, Göteborg, SE-412 96, Sweden
| | - Anders Hellman
- Department of Applied Physics, Chalmers University of Technology, Göteborg, SE-412 96, Sweden
| | - Yurui Fang
- Department of Applied Physics, Chalmers University of Technology, Göteborg, SE-412 96, Sweden
| | - Shiwu Gao
- Beijing Computational Science Research Center, Beijing, 100094, China
| | - Mikael Käll
- Department of Applied Physics, Chalmers University of Technology, Göteborg, SE-412 96, Sweden
| |
Collapse
|
1305
|
Fang Y, Jiao Y, Xiong K, Ogier R, Yang ZJ, Gao S, Dahlin AB, Käll M. Plasmon Enhanced Internal Photoemission in Antenna-Spacer-Mirror Based Au/TiO₂ Nanostructures. NANO LETTERS 2015; 15:4059-4065. [PMID: 25938263 DOI: 10.1021/acs.nanolett.5b01070] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Emission of photoexcited hot electrons from plasmonic metal nanostructures to semiconductors is key to a number of proposed nanophotonics technologies for solar harvesting, water splitting, photocatalysis, and a variety of optical sensing and photodetector applications. Favorable materials and catalytic properties make systems based on gold and TiO2 particularly interesting, but the internal photoemission efficiency for visible light is low because of the wide bandgap of the semiconductor. We investigated the incident photon-to-electron conversion efficiency of thin TiO2 films decorated with Au nanodisk antennas in an electrochemical circuit and found that incorporation of a Au mirror beneath the semiconductor amplified the photoresponse for light with wavelength λ = 500-950 nm by a factor 2-10 compared to identical structures lacking the mirror component. Classical electrodynamics simulations showed that the enhancement effect is caused by a favorable interplay between localized surface plasmon excitations and cavity modes that together amplify the light absorption in the Au/TiO2 interface. The experimentally determined internal quantum efficiency for hot electron transfer decreases monotonically with wavelength, similar to the probability for interband excitations with energy higher than the Schottky barrier obtained from a density functional theory band structure simulation of a thin Au/TiO2 slab.
Collapse
Affiliation(s)
- Yurui Fang
- †Department of Applied Physics, Chalmers University of Technology, Göteborg SE-412 96, Sweden
| | - Yang Jiao
- †Department of Applied Physics, Chalmers University of Technology, Göteborg SE-412 96, Sweden
| | - Kunli Xiong
- †Department of Applied Physics, Chalmers University of Technology, Göteborg SE-412 96, Sweden
| | - Robin Ogier
- †Department of Applied Physics, Chalmers University of Technology, Göteborg SE-412 96, Sweden
| | - Zhong-Jian Yang
- †Department of Applied Physics, Chalmers University of Technology, Göteborg SE-412 96, Sweden
| | - Shiwu Gao
- †Department of Applied Physics, Chalmers University of Technology, Göteborg SE-412 96, Sweden
- ‡Beijing Computational Science Research Center, Zhongguancun Software Park II, No. 10 Dongbeiwang West Road, Haidian District, Beijing 100094, China
| | - Andreas B Dahlin
- †Department of Applied Physics, Chalmers University of Technology, Göteborg SE-412 96, Sweden
| | - Mikael Käll
- †Department of Applied Physics, Chalmers University of Technology, Göteborg SE-412 96, Sweden
| |
Collapse
|
1306
|
Bernardi M, Mustafa J, Neaton JB, Louie SG. Theory and computation of hot carriers generated by surface plasmon polaritons in noble metals. Nat Commun 2015; 6:7044. [PMID: 26033445 PMCID: PMC4458868 DOI: 10.1038/ncomms8044] [Citation(s) in RCA: 155] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Accepted: 03/26/2015] [Indexed: 12/22/2022] Open
Abstract
Hot carriers (HC) generated by surface plasmon polaritons (SPPs) in noble metals are promising for application in optoelectronics, plasmonics and renewable energy. However, existing models fail to explain key quantitative details of SPP-to-HC conversion experiments. Here we develop a quantum mechanical framework and apply first-principles calculations to study the energy distribution and scattering processes of HCs generated by SPPs in Au and Ag. We find that the relative positions of the s and d bands of noble metals regulate the energy distribution and mean free path of the HCs, and that the electron-phonon interaction controls HC energy loss and transport. Our results prescribe optimal conditions for HC generation and extraction, and invalidate previously employed free-electron-like models. Our work combines density functional theory, GW and electron-phonon calculations to provide microscopic insight into HC generation and ultrafast dynamics in noble metals.
Collapse
Affiliation(s)
- Marco Bernardi
- Department of Physics, University of California at Berkeley, 366 LeConte Hall #7300, Berkeley, California 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Jamal Mustafa
- Department of Physics, University of California at Berkeley, 366 LeConte Hall #7300, Berkeley, California 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Jeffrey B. Neaton
- Department of Physics, University of California at Berkeley, 366 LeConte Hall #7300, Berkeley, California 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- Kavli Institute for Energy Nanosciences at Berkeley, Berkeley, California 94720, USA
| | - Steven G. Louie
- Department of Physics, University of California at Berkeley, 366 LeConte Hall #7300, Berkeley, California 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| |
Collapse
|
1307
|
García de Arquer FP, Konstantatos G. Metal-insulator-semiconductor heterostructures for plasmonic hot-carrier optoelectronics. OPTICS EXPRESS 2015; 23:14715-14723. [PMID: 26072830 DOI: 10.1364/oe.23.014715] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Plasmonic hot-electron devices are attractive candidates for light-energy harvesting and photodetection applications. For solid state devices, the most compact and straightforward architecture is the metal-semiconductor Schottky junction. However convenient, this structure introduces limitations such as the elevated dark current associated to thermionic emission, or constraints for device design due to the finite choice of materials. In this work we theoretically consider the metal-insulator-semiconductor heterojunction as a candidate for plasmonic hot-carrier photodetection and solar cells. The presence of the insulating layer can significantly reduce the dark current, resulting in increased device performance with predicted solar power conversion efficiencies up to 9%. For photodetection, the sensitivity can be extended well into the infrared by a judicious choice of the insulating layer, with up to 300-fold expected enhancement in detectivity.
Collapse
|
1308
|
Hong T, Chamlagain B, Hu S, Weiss SM, Zhou Z, Xu YQ. Plasmonic Hot Electron Induced Photocurrent Response at MoS2-Metal Junctions. ACS NANO 2015; 9:5357-5363. [PMID: 25871507 DOI: 10.1021/acsnano.5b01065] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We investigate the wavelength- and polarization-dependence of photocurrent signals generated at few-layer MoS2-metal junctions through spatially resolved photocurrent measurements. When incident photon energy is above the direct bandgap of few-layer MoS2, the maximum photocurrent response occurs for the light polarization direction parallel to the metal electrode edge, which can be attributed to photovoltaic effects. In contrast, if incident photon energy is below the direct bandgap of MoS2, the photocurrent response is maximized when the incident light is polarized in the direction perpendicular to the electrode edge, indicating different photocurrent generation mechanisms. Further studies show that this polarized photocurrent response can be interpreted in terms of the polarized absorption of light by the plasmonic metal electrode, its conversion into hot electron-hole pairs, and subsequent injection into MoS2. These fundamental studies shed light on the knowledge of photocurrent generation mechanisms in metal-semiconductor junctions, opening the door for engineering future two-dimensional materials based optoelectronics through surface plasmon resonances.
Collapse
Affiliation(s)
- Tu Hong
- †Department of Electrical Engineering and Computer Science, Vanderbilt University, Nashville, Tennessee 37212, United States
| | - Bhim Chamlagain
- ‡Department of Physics and Astronomy, Wayne State University, Detroit, Michigan 48201, United States
| | - Shuren Hu
- §Department of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37212, United States
| | - Sharon M Weiss
- †Department of Electrical Engineering and Computer Science, Vanderbilt University, Nashville, Tennessee 37212, United States
- §Department of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37212, United States
| | - Zhixian Zhou
- ‡Department of Physics and Astronomy, Wayne State University, Detroit, Michigan 48201, United States
| | - Ya-Qiong Xu
- †Department of Electrical Engineering and Computer Science, Vanderbilt University, Nashville, Tennessee 37212, United States
- §Department of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37212, United States
| |
Collapse
|
1309
|
Amendola V, Saija R, Maragò OM, Iatì MA. Superior plasmon absorption in iron-doped gold nanoparticles. NANOSCALE 2015; 7:8782-92. [PMID: 25906477 DOI: 10.1039/c5nr00823a] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Although the excitation of localized surface plasmons is associated with enhanced scattering and absorption of incoming photons, only the latter is relevant for the efficient conversion of light into heat. Here we show that the absorption cross section of gold nanoparticles is sensibly increased when iron is included in the lattice as a substitutional dopant, i.e. in a gold-iron nanoalloy. Such an increase is size and shape dependent, with the best performance observed in nanoshells where a 90-190% improvement is found in a size range that is crucial for practical applications. Our findings are unexpected according to the common belief and previous experimental observations that alloys of Au with transition metals show a depressed plasmonic response. These results are promising for the design of efficient plasmonic converters of light into heat and pave the way to more in-depth investigations of the plasmonic properties in noble metal nanoalloys.
Collapse
Affiliation(s)
- Vincenzo Amendola
- Department of Chemical Sciences, University of Padova, via Marzolo 1, I-35131 Padova, Italy.
| | | | | | | |
Collapse
|
1310
|
Li G, Cherqui C, Bigelow NW, Duscher G, Straney PJ, Millstone JE, Masiello DJ, Camden JP. Spatially Mapping Energy Transfer from Single Plasmonic Particles to Semiconductor Substrates via STEM/EELS. NANO LETTERS 2015; 15:3465-71. [PMID: 25845028 DOI: 10.1021/acs.nanolett.5b00802] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Energy transfer from plasmonic nanoparticles to semiconductors can expand the available spectrum of solar energy-harvesting devices. Here, we spatially and spectrally resolve the interaction between single Ag nanocubes with insulating and semiconducting substrates using electron energy-loss spectroscopy, electrodynamics simulations, and extended plasmon hybridization theory. Our results illustrate a new way to characterize plasmon-semiconductor energy transfer at the nanoscale and bear impact upon the design of next-generation solar energy-harvesting devices.
Collapse
Affiliation(s)
- Guoliang Li
- †Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Charles Cherqui
- ‡Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
| | - Nicholas W Bigelow
- ‡Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
| | - Gerd Duscher
- §Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Patrick J Straney
- ∥Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Jill E Millstone
- ∥Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - David J Masiello
- ‡Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
| | - Jon P Camden
- †Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| |
Collapse
|
1311
|
Gilbertson AM, Francescato Y, Roschuk T, Shautsova V, Chen Y, Sidiropoulos TPH, Hong M, Giannini V, Maier SA, Cohen LF, Oulton RF. Plasmon-induced optical anisotropy in hybrid graphene-metal nanoparticle systems. NANO LETTERS 2015; 15:3458-3464. [PMID: 25915785 DOI: 10.1021/acs.nanolett.5b00789] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Hybrid plasmonic metal-graphene systems are emerging as a class of optical metamaterials that facilitate strong light-matter interactions and are of potential importance for hot carrier graphene-based light harvesting and active plasmonic applications. Here we use femtosecond pump-probe measurements to study the near-field interaction between graphene and plasmonic gold nanodisk resonators. By selectively probing the plasmon-induced hot carrier dynamics in samples with tailored graphene-gold interfaces, we show that plasmon-induced hot carrier generation in the graphene is dominated by direct photoexcitation with minimal contribution from charge transfer from the gold. The strong near-field interaction manifests as an unexpected and long-lived extrinsic optical anisotropy. The observations are explained by the action of highly localized plasmon-induced hot carriers in the graphene on the subresonant polarizability of the disk resonator. Because localized hot carrier generation in graphene can be exploited to drive electrical currents, plasmonic metal-graphene nanostructures present opportunities for novel hot carrier device concepts.
Collapse
Affiliation(s)
- Adam M Gilbertson
- †Blackett Laboratory, Imperial College London, Prince Consort Road, London SW7 2BZ, United Kingdom
| | - Yan Francescato
- †Blackett Laboratory, Imperial College London, Prince Consort Road, London SW7 2BZ, United Kingdom
| | - Tyler Roschuk
- †Blackett Laboratory, Imperial College London, Prince Consort Road, London SW7 2BZ, United Kingdom
| | - Viktoryia Shautsova
- †Blackett Laboratory, Imperial College London, Prince Consort Road, London SW7 2BZ, United Kingdom
| | - Yiguo Chen
- †Blackett Laboratory, Imperial College London, Prince Consort Road, London SW7 2BZ, United Kingdom
- ‡Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive, 117576 Singapore
| | | | - Minghui Hong
- ‡Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive, 117576 Singapore
| | - Vincenzo Giannini
- †Blackett Laboratory, Imperial College London, Prince Consort Road, London SW7 2BZ, United Kingdom
| | - Stefan A Maier
- †Blackett Laboratory, Imperial College London, Prince Consort Road, London SW7 2BZ, United Kingdom
| | - Lesley F Cohen
- †Blackett Laboratory, Imperial College London, Prince Consort Road, London SW7 2BZ, United Kingdom
| | - Rupert F Oulton
- †Blackett Laboratory, Imperial College London, Prince Consort Road, London SW7 2BZ, United Kingdom
| |
Collapse
|
1312
|
Dong Y, Choi J, Jeong HK, Son DH. Hot Electrons Generated from Doped Quantum Dots via Upconversion of Excitons to Hot Charge Carriers for Enhanced Photocatalysis. J Am Chem Soc 2015; 137:5549-54. [DOI: 10.1021/jacs.5b02026] [Citation(s) in RCA: 85] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Yitong Dong
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Julius Choi
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Hae-Kwon Jeong
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Dong Hee Son
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| |
Collapse
|
1313
|
Liu F, Luber EJ, Huck LA, Olsen BC, Buriak JM. Nanoscale plasmonic stamp lithography on silicon. ACS NANO 2015; 9:2184-93. [PMID: 25654172 DOI: 10.1021/acsnano.5b00312] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Nanoscale lithography on silicon is of interest for applications ranging from computer chip design to tissue interfacing. Block copolymer-based self-assembly, also called directed self-assembly (DSA) within the semiconductor industry, can produce a variety of complex nanopatterns on silicon, but these polymeric films typically require transformation into functional materials. Here we demonstrate how gold nanopatterns, produced via block copolymer self-assembly, can be incorporated into an optically transparent flexible PDMS stamp, termed a plasmonic stamp, and used to directly functionalize silicon surfaces on a sub-100 nm scale. We propose that the high intensity electric fields that result from the localized surface plasmons of the gold nanoparticles in the plasmonic stamps upon illumination with low intensity green light, lead to generation of electron-hole pairs in the silicon that drive spatially localized hydrosilylation. This approach demonstrates how localized surface plasmons can be used to enable functionalization of technologically relevant surfaces with nanoscale control.
Collapse
Affiliation(s)
- Fenglin Liu
- Department of Chemistry, University of Alberta , 11227 Saskatchewan Drive, Edmonton, AB T6G 2G2, Canada
| | | | | | | | | |
Collapse
|
1314
|
Abstract
Nanoplasmonics or nanoscale metal-based optics is a field of science and technology with a tremendously rich and colourful history. Starting with the early works of Michael Faraday on gold nanocolloids and optically-thin gold leaf, researchers have been fascinated by the unusual optical properties displayed by metallic nanostructures. We now can enjoy selecting from over 10 000 publications every year on the topic of plasmonics and the number of publications has been doubling about every three years since 1990. This impressive productivity can be attributed to the significant growth of the scientific community as plasmonics has spread into a myriad of new directions. With 2015 being the International Year of Light, it seems like a perfect moment to review some of the most notable accomplishments in plasmonics to date and to project where the field may be moving next. After discussing some of the major historical developments in the field, this article will analyse how the most successful plasmonics applications are capitalizing on five key strengths of metallic nanostructures. This Introductory Lecture will conclude with a brief look into the future.
Collapse
|
1315
|
Cushing SK, Bristow AD, Wu N. Theoretical maximum efficiency of solar energy conversion in plasmonic metal–semiconductor heterojunctions. Phys Chem Chem Phys 2015; 17:30013-22. [PMID: 26497739 DOI: 10.1039/c5cp04512f] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The plasmon's dephasing is used to calculate optimal design guidelines and the maximum efficiency for plasmon enhanced solar energy conversion.
Collapse
Affiliation(s)
- Scott K. Cushing
- Department of Physics and Astronomy
- West Virginia University
- Morgantown
- USA
- Department of Mechanical and Aerospace Engineering
| | - Alan D. Bristow
- Department of Physics and Astronomy
- West Virginia University
- Morgantown
- USA
| | - Nianqiang Wu
- Department of Mechanical and Aerospace Engineering
- West Virginia University
- Morgantown
- USA
| |
Collapse
|
1316
|
Moskovits M. The case for plasmon-derived hot carrier devices. NATURE NANOTECHNOLOGY 2015; 10:6-8. [PMID: 25559962 DOI: 10.1038/nnano.2014.280] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Affiliation(s)
- Martin Moskovits
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, USA
| |
Collapse
|