Plasmon-Assisted Photocurrent Generation from Visible to Near-Infrared Wavelength Using a Au-Nanorods/TiO<sub>2</sub> Electrode

Nishijima, Yoshiaki; Ueno, Kosei; Yokota, Yukie; Murakoshi, Kei; Misawa, Hiroaki

doi:10.1021/jz1006675

Cited by 431 publications

(412 citation statements)

References 30 publications

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“…In addition, large area and low-cost fabrication techniques [88,89] can be used for silicon-based hot electron photodetectors. Hot electron photodetectors can be employed in the visible regime [58,[96][97][98][99] by swapping silicon with larger bandgap materials such as TiO 2 [58, 96-98, 100, 101] and ZnO [99]. These detectors have much higher efficiencies than their telecommunication band counterparts due to the higher photon energy of visible light.…”

Section: Free-space Photodetectorsmentioning

confidence: 99%

Harvesting the loss: surface plasmon-based hot electron photodetection

2016

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Abstract:Although the nonradiative decay of surface plasmons was once thought to be only a parasitic process within the plasmonic and metamaterial communities, hot carriers generated from nonradiative plasmon decay offer new opportunities for harnessing absorption loss. Hot carriers can be harnessed for applications ranging from chemical catalysis, photothermal heating, photovoltaics, and photodetection. Here, we present a review on the recent developments concerning photodetection based on hot electrons. The basic principles and recent progress on hot electron photodetectors are summarized. The challenges and potential future directions are also discussed.

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Section: Free-space Photodetectorsmentioning

confidence: 99%

Harvesting the loss: surface plasmon-based hot electron photodetection

2016

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“…The Au NRs used in the study by Nishijima et al 32 were fabricated in the range of 2.5 mm around on a rutile-type single-crystal TiO 2 substrate (0.05 wt% Nb-doped) using electron beam lithography and the lift-off method to create optical antenna structures. Figure 2a depicts the scanning electron microscope images of the Au NRs (each 100 Â 200 Â 30 nm) on TiO 2 .…”

Section: Plasmonic Photoelectric Conversion By Visible and Near-inframentioning

confidence: 99%

“…32 In this review, we describe recent studies concerning the optical antenna effect induced by LSPR, the spectral properties of Au NRs, and the plasmonic photoelectric conversion behavior at visible to near-infrared wavelengths of light, as well as the experimental approach for investigating the mechanism of plasmonic photoelectric conversion.…”

Section: Introductionmentioning

confidence: 99%

Plasmon-enhanced photocurrent generation and water oxidation from visible to near-infrared wavelengths

Ueno

Misawa

2013

NPG Asia Mater

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This paper presents recent investigations of plasmon-enhanced photoelectric conversion and water oxidation by visible and nearinfrared light irradiation. Since the discovery of the Honda-Fujishima effect in 1972, significant efforts have been devoted to lengthening the light-energy conversion wavelength. In this context, plasmonic photoelectric conversion has been recently demonstrated at visible-to-near-infrared wavelengths without deteriorating photoelectric conversion by employing titanium dioxide (TiO 2 ) single-crystal photoelectrodes, in which gold nanorods are elaborately arrayed on the surface. A potassium perchlorate aqueous solution was employed as an electrolyte solution without additional electron donors; thus, water molecules provided the electrons. The stoichiometric evolution of oxygen and hydrogen peroxide as a result of the four-or two-electron oxidation of water molecules, respectively, was accomplished with near-infrared light irradiation using the plasmonic optical antenna effect. As there is very little overpotential for water oxidation, these results constitute a significant advancement in this field. In addition, this photoelectric conversion system could potentially be employed in artificial photosynthesis systems that exceed the photosynthetic capabilities of plants by allowing for photoconversion over a wide range of wavelengths.

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“…These unique properties promote the application of LSPR in many fields, such as surface-enhanced Raman scattering, [5][6][7][8] sensing, 1,9,10 plasmonassisted photochemical reactions 4,11,12 and photocurrent generation. [13][14][15] To further understand the LSPR mechanism and to optimize the design of the plasmonic nanostructures for most applications, the near-field properties of the LSPR fields (especially the near-field distribution of the plasmonic nanostructures) must be determined. To date, investigations of the optical properties of LSPR have largely relied on far-field spectroscopic techniques or numerical simulations.…”

Section: Introductionmentioning

confidence: 99%

Direct imaging of the near field and dynamics of surface plasmon resonance on gold nanostructures using photoemission electron microscopy

et al. 2013

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Localized surface plasmon resonance (LSPR) can be supported by metallic nanoparticles and engineered nanostructures. An understanding of the spatially resolved near-field properties and dynamics of LSPR is important, but remains experimentally challenging. We report experimental studies toward this aim using photoemission electron microscopy (PEEM) with high spatial resolution of sub-10 nm. Various engineered gold nanostructure arrays (such as rods, nanodisk-like particles and dimers) are investigated via PEEM using near-infrared (NIR) femtosecond laser pulses as the excitation source. When the LSPR wavelengths overlap the spectrum of the femtosecond pulses, the LSPR is efficiently excited and promotes multiphoton photoemission, which is correlated with the local intensity of the metallic nanoparticles in the near field. Thus, the local field distribution of the LSPR on different Au nanostructures can be directly explored and discussed using the PEEM images. In addition, the dynamics of the LSPR is studied by combining interferometric time-resolved pump-probe technique and PEEM. Detailed information on the oscillation and dephasing of the LSPR field can be obtained. The results identify PEEM as a powerful tool for accessing the near-field mapping and dynamic properties of plasmonic nanostructures. Keywords: femtosecond laser; local field enhancement; near-field imaging; photoemission electron microscopy; surface plasmon resonance INTRODUCTION Because of the rapid development of nanofabrication techniques, metallic nanostructures that can exhibit localized surface plasmon resonance (LSPR) can be fabricated using several methods. The resonance frequency and amplitude of LSPR on metallic nanostructures are known to depend on the metal materials, shapes, and surrounding media. [1][2][3][4] In addition, the LSPR can confine optical fields in nanoscale space, leading to the so-called local field enhancement effect. These unique properties promote the application of LSPR in many fields, such as surface-enhanced Raman scattering, 5-8 sensing, 1,9,10 plasmonassisted photochemical reactions 4,11,12 and photocurrent generation. [13][14][15] To further understand the LSPR mechanism and to optimize the design of the plasmonic nanostructures for most applications, the near-field properties of the LSPR fields (especially the near-field distribution of the plasmonic nanostructures) must be determined. To date, investigations of the optical properties of LSPR have largely relied on far-field spectroscopic techniques or numerical simulations. Several experimental approaches have been utilized to visualize the near field, including scanning photoionization microscopy, 16,17 scanning near-field optical microscopy, 18-21 nonlinear luminescence or fluorescent microscopy, 22,23 nonlinear photopolymerization 24,25 and near-field ablation of a substrate. [26][27][28][29] However, these approaches have

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Plasmon-Assisted Photocurrent Generation from Visible to Near-Infrared Wavelength Using a Au-Nanorods/TiO₂ Electrode

Cited by 431 publications

References 30 publications

Harvesting the loss: surface plasmon-based hot electron photodetection

Harvesting the loss: surface plasmon-based hot electron photodetection

Plasmon-enhanced photocurrent generation and water oxidation from visible to near-infrared wavelengths

Direct imaging of the near field and dynamics of surface plasmon resonance on gold nanostructures using photoemission electron microscopy

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Plasmon-Assisted Photocurrent Generation from Visible to Near-Infrared Wavelength Using a Au-Nanorods/TiO2 Electrode

Cited by 431 publications

References 30 publications

Harvesting the loss: surface plasmon-based hot electron photodetection

Harvesting the loss: surface plasmon-based hot electron photodetection

Plasmon-enhanced photocurrent generation and water oxidation from visible to near-infrared wavelengths

Direct imaging of the near field and dynamics of surface plasmon resonance on gold nanostructures using photoemission electron microscopy

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Product

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Plasmon-Assisted Photocurrent Generation from Visible to Near-Infrared Wavelength Using a Au-Nanorods/TiO₂ Electrode