Plasmonic enhancement of light-harvesting efficiency in tandem dye-sensitized solar cells using multiplexed gold core/silica shell nanorods

Zheng, Yan‐Zhen; Tao, Xia; Jin-wen, Zhang; Lai, Xue-Sen; Li, Nan

doi:10.1016/j.jpowsour.2017.11.072

Cited by 19 publications

(9 citation statements)

References 47 publications

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“…Figure D gives the image of multi‐shell hollow SiO 2 @Au@TiO 2 (HSAT) nanospheres. The outer thin TiO 2 layer plays a vital role in preventing Au NPs from corrosion by surrounding electrolytes, as well as preventing recombination of photogenerated carriers . In addition, it can also make the multi‐shell hollow SiO 2 @Au@TiO 2 (HSAT) nanospheres to be better integrated into TiO 2 pastes, which is conducive to providing more effective contacts for the dye loading.…”

Section: Resultsmentioning

confidence: 99%

“…The outer thin TiO 2 layer plays a vital role in preventing Au NPs from corrosion by surrounding electrolytes, as well as preventing recombination of photogenerated carriers. 26,27 In addition, it can also make the multi-shell hollow SiO 2 @Au@TiO 2 (HSAT) nanospheres to be better integrated into TiO 2 pastes, which is conducive to providing more effective contacts for the dye loading. Further evidence for such HSAT structure was confirmed by the Energy-dispersive X-ray spectroscopy (EDX) spectrum as shown in the Figure 2E.…”

Section: Resultsmentioning

confidence: 99%

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Synergistic enhancements in the performances of dye‐sensitized solar cells by the scattering and plasmon resonance of Au‐nanoparticle multi‐shell hollow nanospheres

et al. 2020

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Summary Novel multi‐shell hollow SiO2@Au@TiO2 (HSAT) nanospheres are synthesized by multi‐step method. Composite photoanodes and Dye‐sensitized solar cells (DSSCs) with different amount of HSAT nanospheres are studied. The study indicates that the HSAT nanospheres have enhanced the scattering and absorption of incident light in the photoanode, reduced the interface transmission resistance, increased the electron lifetime, and thus significantly improved performance of DSSCs. The maximal Jsc and photoelectric conversion efficiency (PCE) obtained in the optimal DSSC doped with HSAT of 3.0% are 15.83 mA cm−2 and 7.21%, greatly enhanced by 21.0% and 20.4%, respectively, compared with those of the pure TiO2‐based DSSC. These remarkable enhancements in DSSCs performance can be attributed to the synergistic and complementary effects of the localized surface plasmon resonance and strong light scattering of HSAT nanospheres, which has significantly improved the absorption and utilization on incident light and thus the PCE of the DSSCs. Such synergistic and complementary effects of the different functions are also likely expected to play roles in the performance improvements in other solar cells.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Synergistic enhancements in the performances of dye‐sensitized solar cells by the scattering and plasmon resonance of Au‐nanoparticle multi‐shell hollow nanospheres

et al. 2020

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“…1−7 Among the most utilized nanomaterials are gold and silicon, and also their combinations as heterostructures. Gold nanorods are used for a wide range of applications, including plasmonics, 8,9 solar energy harvesting, 10,11 drug delivery, 12,13 biomedical imaging, 14,15 photothermal therapy, 16,17 sensitive chemical detection, 18,19 and metamaterials development. 20,21 The synthesis methods for these nanorods include templatedirected synthesis, 22,23 electrochemical growth, 24,25 seedmediated colloidal growth methods, 26,27 seedless growth, 27,28 photochemical synthesis, 29,30 and mechanical tearing of the nanocrystalline Au film.…”

Section: Introductionmentioning

confidence: 99%

Nanomolding of Gold and Gold–Silicon Heterostructures at Room Temperature

Raj

Liu

et al. 2021

ACS Nano

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Nanofabrication techniques are limited by at least one of the required characteristics such as choice of material, control over geometry, fabrication requirements, yield, cost, and scalability. Our previously developed method of thermomechanical nanomolding fulfills these requirements, although it requires high processing temperatures. Here, we demonstrate low-temperature molding where we utilize the enhanced diffusivity on "eutectic interfaces". Gold nanorods are molded at room temperature using Au−Si alloy as feedstock. Instead of using alloy feedstock, these "eutectic interfaces" can also be established through a feedstock−mold combination. We demonstrate this by using pure Au as feedstock, which is molded into Si molds at room temperature, and also the reverse, Si feedstock is molded into Au molds forming high aspect ratio Au−Si core−shell nanorods. We discuss the mechanism of this low-temperature nanomolding in terms of lower homologous temperature at the eutectic interface. This technique, based on enhanced eutectic interface diffusion, provides a practical nanofabrication method that eliminates the previous high-temperature requirements, thereby expanding the range of the materials that can be practically nanofabricated.

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“…In this work, we investigate the optical response of packed rectangular nanostructures on a surface, as they are commonly employed as dipole scatterers in optical devices [7][8][9] for various applications including light harvesting [10] and biosensing [11]. However, a detailed electromagnetic simulation of such an ensemble is a computationally expensive task to perform and one rather seeks the effective medium description as an approximation.…”

Section: Introductionmentioning

confidence: 99%

Optical response of jammed rectangular nanostructures

et al. 2020

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Random jammed dipole scatterers are natural composite and common byproducts of various chemical synthesis techniques. They often form complex aggregates with nontrivial correlations that influence the effective dielectric description of the medium. In this work, we investigate the packing dynamic of rectangular nanostructure under a close packing protocol and study its influence on the optical response of the medium. We show that the maximum packing densities, maximum scattering densities, and percolation threshold densities are all interconnected concepts that can be understood through the lens of Onsager’s exclusion area principle. The emerging positional and orientational correlations between the rectangular dipoles are studied, and various geometrical connections are drawn. The effective dielectric constants of the generated ensembles are then computed through the strong contrast expansion method, leading to several unintuitive results such as scattering suppression at maximum packing densities, as well as densities below the percolation threshold, and maximum scattering in between.

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Plasmonic enhancement of light-harvesting efficiency in tandem dye-sensitized solar cells using multiplexed gold core/silica shell nanorods

Cited by 19 publications

References 47 publications

Synergistic enhancements in the performances of dye‐sensitized solar cells by the scattering and plasmon resonance of Au‐nanoparticle multi‐shell hollow nanospheres

Synergistic enhancements in the performances of dye‐sensitized solar cells by the scattering and plasmon resonance of Au‐nanoparticle multi‐shell hollow nanospheres

Nanomolding of Gold and Gold–Silicon Heterostructures at Room Temperature

Optical response of jammed rectangular nanostructures

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