A sensitive red light nano-photodetector propelled by plasmonic copper nanoparticles

Wang, Dandan; Ge, Cai-Wang; Wu, Guo‐An; Li, Zhipeng; Wang, Jiu-Zhen; Zhang, Tengfei; Yu, Yongqiang; Luo, Lin‐Bao

doi:10.1039/c6tc05117k

Cited by 26 publications

(22 citation statements)

References 34 publications

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“…For CdSe NB PD, the nonunity exponent θ is 0.719, as shown in Figure d. This implies that the complex processes in CdSe semiconductor occur, including electron–hole generation, separation, trapping, recombination, etc . For APH‐100@CdSe NB PD, θ is 0.693 at low light intensity, as shown in Figure e, revealing that the Au NPs hybrid CdSe NB has a potential application in detecting weak light.…”

Section: Resultsmentioning

confidence: 88%

“…Although the PDs based on the CdSe nanomaterial have been widely explored, their figure of merits are still low. To improve their photoelectronic performances, Luo and coworkers have prepared copper nanoparticles (Cu NPs) array hybrid multilayer graphene‐CdSe NR Schottky junction PD with a higher switch ratio, resulting in a higher responsivity and a faster response speed than the original Cu NPS device, in which LSPR has contributed to its excellent figure of merits by promoting light absorption. However, no researchers so far have taken any advantages of NMNPs' tunable plasmon resonance absorption to design CdSe nanomaterials or its derivatives detector for obtaining high performance.…”

Section: Introductionmentioning

confidence: 99%

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Ultrahighly Enhanced Performance of Single Cadmium Selenide Nanobelt by Plasmonic Gold Particles

Peng

Kang

et al. 2019

Physica Status Solidi (a)

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Noble metal nanoparticles have been demonstrated by a huge application prospect for photodetector (PD) due to their unique and tunable optical properties. Herein, a simple strategy is presented by a combination of gold nanoparticles (Au NPs) and broadband photoresponse cadmium selenide nanobelts (CdSe NBs) to get ultrasensitive, broadband photoresponse (300–720 nm) and tunable photoresponse PD. Concretely, the Au NPs are fabricated on CdSe NBs via ion sputtering and annealing, and the morphology of Au NPs is systematically adjusted by simply tuning the sputter time from 60 to 140 s. Compared with the pure CdSe NB PD, the Au NPs hybrid CdSe NB PD exhibits a high responsivity, especially in the range of 525–575 nm with low light intensity (enhancement of ≈2894% at 550 nm with 79.6 μW cm−2). The response time of the hybrid PD is decreased substantially from 0.8 to 0.2 ms. More importantly, the hybrid PD possesses a tunable absorption in the range of 538–580 nm, which is benefited from tunable plasmon resonance of Au NPs. These results are confirmed by the theoretical simulation. It is believed that this strategy offers new opportunities to design ultrasensitive, broadband spectra, and tunable wavelength PD.

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Section: Resultsmentioning

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Ultrahighly Enhanced Performance of Single Cadmium Selenide Nanobelt by Plasmonic Gold Particles

Peng

Kang

et al. 2019

Physica Status Solidi (a)

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“…As alternatives to noble‐metal NPs, poor‐metal NPs have attracted an increasing amount of interest because they have large negative real and small imaginary dielectric functions, and therefore they can induce LSPRs as well. A new plasmonic red‐light photodetector was fabricated by decorating a graphene–CdSe nanoribbon heterojunction with ordered copper NPs, which exhibits apparent LSPRs in the range 700–900 nm . The Cu NPs were obtained by directly sputtering the Cu metal onto the graphene/CdSe heterojunction using polystyrene spheres as a template, followed by removal of the spheres.…”

Section: Ld Plasmonic Photodetectors Based On Metal Npsmentioning

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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“…At the current state of research, Au and Ag are the bestinvestigated and most frequently used metals for plasmonic components, since they exhibit relatively low losses in the visible spectral range. [205] However, Cu and Al have also recently gained importance. In contrast to Au and Ag, Al is an abundant and relatively cheap metal.…”

Section: Realization Of Hot Charge Carrier Transfer With Coupled Orgamentioning

confidence: 99%

Prospects of Coupled Organic–Inorganic Nanostructures for Charge and Energy Transfer Applications

et al. 2020

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European Research Council (ERC) under the European Unions Horizon 2020 research and innovation program (grant agreement No 802822). J.L. acknowledges funding by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germanys Excellence Strategy within the Cluster of Excellence PhoenixD (EXC 2122, Project ID 390833453) and the Caroline Herschel program of the Leibniz Universität Hannover. F.L. thanks the FCI for a Liebig Fellowship. Financial support for A.F and A.M.S provided by Deutsche Forschungsgemeinschaft (DFG German Research Foundation), project ID 407193529 is gratefully acknowledged. Open access funding enabled and organized by Projekt DEAL.

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A sensitive red light nano-photodetector propelled by plasmonic copper nanoparticles

Abstract: A high-performance red light nano-photodetector was constructed by modifying a multi-layer graphene (MLG)–CdSe nanoribbon Schottky junction with hexagonal copper nanoparticles with localized surface plasmon resonance (LSPR).

Cited by 26 publications

References 34 publications

Ultrahighly Enhanced Performance of Single Cadmium Selenide Nanobelt by Plasmonic Gold Particles

Ultrahighly Enhanced Performance of Single Cadmium Selenide Nanobelt by Plasmonic Gold Particles

Low‐Dimensional Plasmonic Photodetectors: Recent Progress and Future Opportunities

Prospects of Coupled Organic–Inorganic Nanostructures for Charge and Energy Transfer Applications

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