CoSe<sub>2</sub>/porous carbon shell composites as high-performance catalysts toward tri-iodide reduction in dye-sensitized solar cells

Li, Weidan; Ma, P.; Chen, Fanfan; Xu, Rui; Cheng, Zhihai; Yin, Xiuli; Lin, Yuan; Wang, Leyu

doi:10.1039/c9qi00859d

Cited by 17 publications

(12 citation statements)

References 51 publications

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“…As an advanced photovoltaic technology, dye-sensitized solar cells (DSSCs) have drawn extensive attention because of their high efficiency, low manufacturing costs, and environmental friendliness. − Broadening the spectral response of the photoactive layer is one of the most critical issues to achieve a highly efficient panchromatic solar cells. As estimated, to gain an efficiency exceeding 15%, an I – /I 3 – electrolyte-based DSSC should harvest 80% of the input sunlight in the range of 350–900 nm .…”

Section: Introductionmentioning

confidence: 99%

Broadband Plasmonic Enhancement of High-Efficiency Dye-Sensitized Solar Cells by Incorporating Au@Ag@SiO₂ Core–Shell Nanocuboids

Bao

Qin

et al. 2019

ACS Appl. Mater. Interfaces

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The introduction of plasmonic additives is a promising approach to boost the efficiency of the dye-sensitized solar cell (DSSC) since they may improve the light harvesting of a solar cell. Herein, we design broadband and strong plasmonic absorption Au@Ag@SiO2 nanocuboids (GSS NCs) as nanophotonic inclusions to achieve plasmon-enhanced DSSCs. These multiple-resonance absorptions arising from GSS NCs can be readily adjusted by altering their structures to complementarily match the absorption spectra of the dyes, especially in weak absorption zones. By subtly regulating the position of nanophotonic inclusions in the photoanodes, not only the plasmonic near-field enhancement but also far-field light scattering could be adequately developed to promote the light harvest and thus the efficiency of DSSCs. The resulting solar cells yield an average efficiency of 10.34%, with a champion value of 10.58%. The electromagnetic simulations are consistent with the experimental observations, further corroborating the synergistic effect of plasmonic improvement in these DSSCs.

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Section: Introductionmentioning

confidence: 99%

Broadband Plasmonic Enhancement of High-Efficiency Dye-Sensitized Solar Cells by Incorporating Au@Ag@SiO₂ Core–Shell Nanocuboids

Bao

Qin

et al. 2019

ACS Appl. Mater. Interfaces

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“…To clarify the enhancement in PCE, the surface potentials of Ni-SAC and reference N–C were measured using a Kelvin probe force microscope. KPFM is a powerful tool that enables imaging of the surface potential on a broad range of nanomaterials and thus provides the information about the composition and electronic state of the local structures. , Notably, the surface potential is related to the various surface properties including catalytic activity and band bending of semiconductors. In hybrid photovoltaics, the surface potential of various catalysts on the electrode can illustrate the electron transporting processes between the I 3 – /I – redox couple and the catalyst deposited on the electrode.…”

Section: Resultsmentioning

confidence: 99%

Nickel-Based Single-Atom Catalyst toward Triiodide Reduction Reaction in Hybrid Photovoltaics

Lin

Jiang

et al. 2021

ACS Sustainable Chem. Eng.

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It is very significant to obtain highly efficient, costeffective, and durable electrocatalysts toward triiodide reduction reaction (TRR) in hybrid photovoltaics. In this study, a nickelbased single-atom catalyst (SAC) (Ni-SAC) was prepared by the facile carbonization of NiPc@ZIF-8 and explored as a highly efficient Pt-free catalyst for TRR. During the carbonization process, the Ni species were separated by coordinate nitrogen atoms and distributed homogeneously within the porous carbon matrix, with the formation of the atomically dispersed Ni−N 4 active sites, revealed by the X-ray absorption fine structure and high-angle annular dark-field scanning transmission electron microscopy. Compared to the reference porous nitrogen-doped carbon, Ni-SAC exhibited superior catalytic activity toward TRR. More importantly, Ni-SAC possessed better stability over the triiodide/iodide redox couple than the Pt counterpart during the stability test. The resultant solar cell presented an efficiency of 7.42%, comparable to that of the Pt-based device (7.69%). Additionally, the Kelvin probe force microscopy measurement revealed that the enhanced catalytic activity of Ni-SAC originated from the moderate energy level matching with the triiodide/iodide redox couple. The formation of Ni−N 4 active sites within the carbon matrix promoted the electron transferring at the interfaces of the catalyst/electrolyte. All results demonstrated that the SAC could be one of the Pt-free catalysts toward efficient TRR in hybrid photovoltaics.

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“…The peak at 37.62°c an be well indexed to the (211) crystalline face of CoSe 2 (JCPDS PDF#09-0234), as shown in Figure S1a,b. 24,25 From Figure S1a, the peak at 51.42°can be indexed to the (154) face of NiSe (JCPDS PDF#29-0935). The peak at 51.36°as shown in Figure S1b could be attributed to the (311) face of RuSe 2 (JCPDS PDF#03-1198).…”

Section: Resultsmentioning

confidence: 99%

Platinum-Free Ternary Metallic Selenides as Nanostructured Counter Electrode for High-Efficiency Dye-Sensitized Solar Cell by Interface Engineering

Liu

Jiang

Liu

et al. 2020

ACS Appl. Energy Mater.

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The high cost and instability of platinum (Pt) counter electrodes (CEs) are two persistent issues in dye-sensitized solar cells (DSSCs). Here, ternary selenide NiCoSe and RuCoSe-nanostructured CEs are prepared by a simple one-step hydrothermal method. We mainly investigate the synergistic effect of ternary transition metals on the electrocatalytic properties. As a result, the photoelectric conversion efficiency (PCE) of NiCoSe CEs DSSCs with the enhanced efficiency up to 8.19% can be achieved. The excellent catalytic properties of the NiCoSe alloy selenide on I 3 − can be attributed to the expanded active sites, matched work function, redistributed electron structures, and reduced interface resistance. The facile preparation approach and outstanding catalytic behaviors offer applications of available DSSCs with low cost, superior stability, and promising performance.

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CoSe₂/porous carbon shell composites as high-performance catalysts toward tri-iodide reduction in dye-sensitized solar cells

Abstract: CoSe2/carbon shell composites with many active sites were developed as catalysts for I3− reduction in dye-sensitized solar cells with efficiency and stability exceeding those of Pt.

Cited by 17 publications

References 51 publications

Broadband Plasmonic Enhancement of High-Efficiency Dye-Sensitized Solar Cells by Incorporating Au@Ag@SiO₂ Core–Shell Nanocuboids

Broadband Plasmonic Enhancement of High-Efficiency Dye-Sensitized Solar Cells by Incorporating Au@Ag@SiO₂ Core–Shell Nanocuboids

Nickel-Based Single-Atom Catalyst toward Triiodide Reduction Reaction in Hybrid Photovoltaics

Platinum-Free Ternary Metallic Selenides as Nanostructured Counter Electrode for High-Efficiency Dye-Sensitized Solar Cell by Interface Engineering

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CoSe2/porous carbon shell composites as high-performance catalysts toward tri-iodide reduction in dye-sensitized solar cells

Abstract: CoSe2/carbon shell composites with many active sites were developed as catalysts for I3− reduction in dye-sensitized solar cells with efficiency and stability exceeding those of Pt.

Cited by 17 publications

References 51 publications

Broadband Plasmonic Enhancement of High-Efficiency Dye-Sensitized Solar Cells by Incorporating Au@Ag@SiO2 Core–Shell Nanocuboids

Broadband Plasmonic Enhancement of High-Efficiency Dye-Sensitized Solar Cells by Incorporating Au@Ag@SiO2 Core–Shell Nanocuboids

Nickel-Based Single-Atom Catalyst toward Triiodide Reduction Reaction in Hybrid Photovoltaics

Platinum-Free Ternary Metallic Selenides as Nanostructured Counter Electrode for High-Efficiency Dye-Sensitized Solar Cell by Interface Engineering

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CoSe₂/porous carbon shell composites as high-performance catalysts toward tri-iodide reduction in dye-sensitized solar cells

Broadband Plasmonic Enhancement of High-Efficiency Dye-Sensitized Solar Cells by Incorporating Au@Ag@SiO₂ Core–Shell Nanocuboids

Broadband Plasmonic Enhancement of High-Efficiency Dye-Sensitized Solar Cells by Incorporating Au@Ag@SiO₂ Core–Shell Nanocuboids