Plasmonic properties and sensor application of the Ag nanocaps

Wang, Ziyun; Zheng, Xiang; Gao, Mengyao; Zhao, Jingtian; Lan, Jinshen; Ye, Xiaofang; Wan, Jing; Fei, Yuchen; Guo, Shengshi; Wu, Yuan‐Fei; Huang, Shengli; Li, Shuping; Kang, Junyong

doi:10.1016/j.jpcs.2021.110414

Cited by 3 publications

(3 citation statements)

References 35 publications

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“…[4,[6][7][8][9][10][11] Like plasmonics, magnetic domain wall reversal and spin-wave damping in periodic nanostructures have immense potential in next-generation spintronic-based memory applications. [12][13][14][15][16][17] In brief, large-area periodic nanocrystals find their utilities in surface engineering with functional magnetic, [18][19][20] plasmonic, [21][22][23][24][25] photonic, [26][27][28] and catalytic properties [29,30] opening a huge scope in various sensor, memory, waveguide, filters, thermal dissipator, and chemical applications. In this case, the geometry of the nanostructure plays a vital role in tuning these functional properties as resonance conditions from the dispersion relation dramatically alter with changing geometry.…”

Section: Introductionmentioning

confidence: 99%

Controlling Vertical Asymmetry of Nanocrystals Through Anisotropic Etching‐Assisted Nanosphere Lithography

Ganguly,

Zafar,

Howells

et al. 2023

Small Structures

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Nanosphere lithography, a low‐cost fabrication technique, depends on the self‐assembly of nanoscale features to create nanostructures in a hexagonally close‐packed structure. In this article, the fabrication of 3D nanostructures over a large surface‐area with anisotropy along the growth direction through the combination of chemical and physical plasma etching is reported. The anisotropy stems from etching the nanosphere mask and the substrate at different rates. Due to the dynamic masking effect, a systematic variation of etching time gives rise to intriguing nanostructures with sharp edges that have strong potential for plasmonic applications, with the possibility of manipulating electromagnetic radiation. The structures obtained include nanocylinders, truncated hexagon‐based pyramids, circular pads on a conical base, and nanocones from a single‐layer nanosphere mask. Simulations of the fabrication process offer further insight into the understanding of nanostructure formation. A good agreement between predicted results and experiments confirms the potential of our numerical design. In addition, the optical properties of the nanostructures are investigated by UV–vis and the experimental findings are consistent with simulations based on a finite‐difference time‐domain method. The nanostructures described in this study contribute to the emerging 3D plasmonics and 3D magnonics, with strong potential for a significant impact on biosensor applications.

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Section: Introductionmentioning

confidence: 99%

Controlling Vertical Asymmetry of Nanocrystals Through Anisotropic Etching‐Assisted Nanosphere Lithography

Ganguly,

Zafar,

Howells

et al. 2023

Small Structures

View full text Add to dashboard Cite

show abstract

“…The LSPR lends merit to the solar cells via light scattering and the absorbing layers [ 42 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 ]. The resulting substantial increase in light scattering can be attributed to the non-radiative decay of the PMs transferred from the light absorption layer to the main hot electron–hole pairs, which are then immediately promoted to the secondary electron–hole pair [ 54 , 55 , 56 , 57 , 58 , 59 ]. This effective electron–hole pair generation can be further exploited through the integration of these plasmonic particles into the ETL in photo-catalytic and light-harvesting devices besides the tandem formation of Schottky’s barrier between metal oxides and the PMs [ 60 , 61 , 62 , 63 , 64 , 65 , 66 ].…”

Section: Introductionmentioning

confidence: 99%

Optoelectronic Enhancement of Perovskite Solar Cells through the Incorporation of Plasmonic Particles

et al. 2022

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The optoelectronic advantages of anchoring plasmonic silver and copper particles and non-plasmonic titanium particles onto zinc oxide (ZnO) nanoflower (NF) scaffolds for the fabrication of perovskite solar cells (PSCs) are addressed in this article. The metallic particles were sputter-deposited as a function of sputtering time to vary their size on solution-grown ZnO NFs on which methylammonium lead iodide perovskite was crystallized in a controlled environment. Optical absorption measurements showed impressive improvements in the light-harvesting efficiency (LHE) of the devices using silver nanoparticles and some concentrations of copper, whereas the LHE was relatively lower in devices used titanium than in a control device without any metallic particles. Fully functional PSCs were fabricated using the plasmonic and non-plasmonic metallic film-decorated ZnO NFs. Several fold enhancements in photoconversion efficiency were achieved in the silver-containing devices compared with the control device, which was accompanied by an increase in the photocurrent density, photovoltage, and fill factor. To understand the plasmonic effects in the photoanode, the LHE, photo-current density, photovoltage, photoluminescence, incident photon-to-current conversion efficiency, and electrochemical impedance properties were thoroughly investigated. This research showcases the efficacy of the addition of plasmonic particles onto photo anodes, which leads to improved light scattering, better charge separation, and reduced electron–hole recombination rate.

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“…[62][63][64][65][66] Hence, MFON composite materials are important in many fields, including SERS, 67,68 catalysis, 69,70 sensing, 71 and photoelectric conversion. 72 The silver film over nanosphere (AgFON) surface provides maximum enhancement in the visible wavelength range owing to its LSPR, 73,74 while gold FON (AuFON) surfaces have also been evaluated as potential candidates for improving surface stability. [75][76][77] The 2D-structured Au-Ag composite materials, due to their highly uniform nanostructures and each Au-Ag particle interact with the near-field of a large number of the surrounding Au-Ag particles, could demonstrate excellent enhanced properties such as the strong light diffraction, plasmonic coupling and synergistic effects.…”

Section: Introductionmentioning

confidence: 99%

Assembly of bimetallic (Au–Ag)FON composite films at liquid/solid interfaces and their tunable optical properties

Zhao

Wang

et al. 2022

Dalton Trans.

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Plasmonic properties and sensor application of the Ag nanocaps

Cited by 3 publications

References 35 publications

Controlling Vertical Asymmetry of Nanocrystals Through Anisotropic Etching‐Assisted Nanosphere Lithography

Controlling Vertical Asymmetry of Nanocrystals Through Anisotropic Etching‐Assisted Nanosphere Lithography

Optoelectronic Enhancement of Perovskite Solar Cells through the Incorporation of Plasmonic Particles

Assembly of bimetallic (Au–Ag)FON composite films at liquid/solid interfaces and their tunable optical properties

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