Surface-plasmon enhanced photodetection at communication band based on hot electrons

Wu, Kai; Zhan, Yaohui; Wu, Shaolong; Deng, Jiajia; Li, Xiao Feng

doi:10.1063/1.4928133

Cited by 24 publications

(15 citation statements)

References 34 publications

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“…Tandemstructured devices with double Schottky barriers can also be used to further enhance hot electron collection efficiency [102]. An alternative approach to extracting hot electrons is to form a metal-insulator-metal diode [47,83,84,[103][104][105][106][107]. MIM diodes have been used as "rectennas" [108] at infrared and lower frequencies for power conversion and transmission.…”

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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“…They were well studied in the IPE of Schottky‐junction photodetectors, which, however, exhibits a low efficiency of 0.3–9% . Plasmonic hot‐electron photodetectors have emerged because the IPE efficiency of the Schottky‐junction photodetectors fabricated by plasmonic metal nanostructures can be increased by plasmon‐enhanced absorption . Moreover, Schottky junctions formed between the semiconductors and the metal nanostructures allow sub‐bandgap photocurrents due to the IPE of plasmonic hot electrons.…”

Section: Ld Plasmonic Photodetectors By Hot‐electron Injectionmentioning

confidence: 99%

Low‐Dimensional Plasmonic Photodetectors: Recent Progress and Future Opportunities

Huang

Luo

2018

Advanced Optical Materials

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to these characteristics, LD photodetectors based on atomically thin 2D materials (e.g., graphene, MoS 2 , WS 2 , etc.), [3][4][5][6][7] 1D semiconductor nanowires (e.g., ZnO, Si, GaN, SnO 2 , etc.), [8] and 0D QDs (such as the PbS QD layer, the HgTe QD layer, and the InAs QDs in quantum wells) [9][10][11][12] are at the forefront of photodetector research for their competitive device performance in terms of higher responsivity, high photoconductive gain, and fast response speed. While the downscaling of devices hastens the electrical signal due to the short length of the electron transport, the small volume of the LD photodetectors also suffers from low absorption of light, e.g., 2.3% for single-layer graphene. [13] Surface plasmon polariton (SPP) is light-excited collective oscillation of free electrons on an interface between a metal layer and a dielectric medium such as air. [14] Under the SPP mode, the electromagnetic energy of light excitation is converted to the energy of an electromagnetic wave on the interface that exhibits characteristics of both the photons and the electrons. Therefore, the SPP mode can confine incident light on the surface of the metal layer below the diffraction limit, and propagate along the surface. Owing to the confinement, the SPP electromagnetic field could be enhanced by up to 10 5 . [15] This provides a promising solution to the dilemma of LD photodetectors and therefore are widely used in thin-film plasmonic optoelectronic devices. [16] However, excitation of SPPs on the metal layers is conditional and normally entails a special excitation setup, such as gold film-coated prism, to meet momentum conservation requirements, and therefore its use in LD photodetectors is limited. In contrast, localized surface plasmons (LSPs) can be excited by direct illumination on metal nanostructures, such as metal nanoparticles (NPs). Compared to SPP, LSP is confined on the NP surface without propagation, and its enhancement depends on NP size and geometry. [17] Thus, well-developed fabrication methods of metal nanostructures have rendered LSPs a dominant technology for boosting the device performance of LD photodetectors in recent years. [18] As the photodetector materials change from bulk or thin film to the LD ones, plasmonic materials also evolve for optimized enhancement depending on the dimensions of the photo detectors of interests. Silver nanowires are deposited on a 2D MoS 2 as an SPP photodetector. [2] Gold NPs are deposited on 1D nanowire as an LSP-enhanced photodetector. [19] Perforated nanohole arrays are made on a gold film to directly excite Plasmonic nanostructures can achieve subdiffraction-limit light confinement with enhanced electric fields. By taking advantage of the light-confinement effect, various plasmonic photodetectors that combine low-dimensional (LD) semiconductor structures and plasmonic materials have recently demonstrated excellent plasmon-enhanced device performance and attracted significant research interest. In this review, the state-of-the-art progress in...

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“…Wu et al designed an MIM IPE-based photodetector exhibiting an unbiased responsivity of 0.1 mA∕W and an ultranarrow response band (FWHM ¼ 4.66 meV), which promises to be a candidate as the compact photodetector operating in communication band. 68 Casalino et al presented a Si on insulator (SOI) waveguide metal-semiconductor-metal (MSM) photodetector, based on IPE and working at a wavelength of 1550 nm. 69 Taking advantage of the MSM structure, their device is able to increase responsivity by lowering the barrier.…”

Section: Mim Mom Msm and Mis Detectorsmentioning

confidence: 99%

Surface plasmon enhanced photodetectors based on internal photoemission

2016

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Surface plasmon photodetectors are of broad interest. They are promising for several applications including telecommunications, photovoltaic solar cells, photocatalysis, color-sensitive detection, and sensing, as they can provide highly enhanced fields and strong confinement (to subwavelength scales). Such photodetectors typically combine a nanometallic structure that supports surface plasmons with a photodetection structure based on internal photoemission or electron-hole pair creation. Photodetector architectures are highly varied, including waveguides, gratings, nanoparticles, nanoislands, or nanoantennas. We review the operating principles behind surface plasmon photodetectors based on the internal photoelectric effect, and we survey and compare the most recent and leading edge concepts reported in the literature. © The Authors. Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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Surface-plasmon enhanced photodetection at communication band based on hot electrons

Cited by 24 publications

References 34 publications

Harvesting the loss: surface plasmon-based hot electron photodetection

Harvesting the loss: surface plasmon-based hot electron photodetection

Low‐Dimensional Plasmonic Photodetectors: Recent Progress and Future Opportunities

Surface plasmon enhanced photodetectors based on internal photoemission

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