研究目的
Investigating the effect of Ag ion implanted TiO2 photoanodes on the efficiency and stability of dye sensitized solar cells (DSSCs).
研究成果
The study demonstrated that Ag ion implantation in TiO2 photoanodes significantly enhances the photovoltaic performance of DSSCs by improving light harvesting and reducing charge recombination. The optimal Ag fluence was found to be 5×1015 ions cm-2, resulting in a 65.3% enhancement in power conversion efficiency (PCE). The technique also ensures the stability of Ag against corrosion, making it a promising approach for the development of efficient and stable plasmonic DSSCs.
研究不足
The study is limited by the specific conditions of Ag ion implantation (energy and fluence) and the thickness of TiO2 photoanodes. The scalability and cost-effectiveness of the ion implantation technique for large-scale production of DSSCs were not addressed.
1:Experimental Design and Method Selection:
The study involved the preparation of TiO2 photoanodes, implantation of Ag ions at variable fluence, and fabrication of DSSCs. The methodology included spin coating, doctor blading, and ion implantation techniques.
2:Sample Selection and Data Sources:
Fluorine doped tin oxide (FTO) substrates were used as the base for photoanodes. TiO2 paste and N719 dye were used for the photoactive layer.
3:List of Experimental Equipment and Materials:
Equipment included a spin coater, doctor blade, low energy ion beam accelerator, X-ray diffractometer (XRD), field emission scanning electron microscope (FESEM), X-ray photoelectron spectroscopy (XPS), UV-Vis NIR spectrometer, photoluminescence spectrometer, Kelvin Probe, and electrochemical impedance spectroscopy (EIS) setup. Materials included FTO substrates, TiO2 paste, N719 dye, and Ag ions.
4:Experimental Procedures and Operational Workflow:
The process involved deposition of TiO2 on FTO, Ag ion implantation at different fluences, dye loading, and assembly of DSSCs. Characterization was performed using XRD, FESEM, XPS, UV-Vis, PL, Kelvin Probe, and EIS.
5:Data Analysis Methods:
Data from characterization techniques were analyzed to understand the structural, morphological, optical, and electrical properties of the photoanodes and the performance of DSSCs.
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X-ray diffractometer (XRD)
D8 FOCUS
Bruker Ettlingen
Structural characterization
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Field emission scanning electron microscope (FESEM)
Supra 55
Carl Zeiss
Morphological characterization
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UV-Vis NIR spectrometer
3600
SHIMADZU
Optical absorption characterization
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Photoluminescence spectrometer
LS 55
PerkinElmer
Photoluminescence characterization
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Kelvin Probe
SKP Kelvin Probe 4.5
K.P. Technology Ltd., U.K.
Work function measurements
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Electrochemical impedance spectroscopy (EIS) setup
PGSTAT12
Autolab
Charge transport kinetics analysis
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Fluorine doped tin oxide (FTO) substrate
Sigma Aldrich
Base substrate for photoanodes
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Titanium dioxide (TiO2) paste
Dyesol, Australia
Photoactive layer material
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N719 dye
Dye for absorbing incident photons
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Platinum (Pt) paste
Sigma Aldrich
Counter electrode material
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X-ray photoelectron spectroscopy (XPS)
MAC2 electron analyzer system
Riber, France
Elemental composition and oxidation state analysis
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