研究目的
Investigating the influence of carboxylic acid functionalization at the meso-position of the bodipy core on photovoltaic performance.
研究成果
The study successfully synthesized and characterized two bodipy dyes for sensitizing TiO2 photoelectrodes, showing improved light harvesting and higher power conversion efficiencies compared to unsensitized controls. However, co-sensitization with N719 dye negatively affected photovoltaic performance, suggesting the need for further modifications to bodipy dyes for improved co-sensitization outcomes.
研究不足
The study notes that the proximity of the carboxylic acid group to the bodipy core influenced photovoltaic parameters, and the bodipy dyes had a negative effect when co-sensitized with N719 dye, possibly due to increased recombination centers or unsuitable molar absorption coefficient.
1：Experimental Design and Method Selection:
The study involved the synthesis of two bodipy dyes with different carboxylic acids at the meso-position, their characterization, and application in sensitizing TiO2 photoelectrodes for PECs.
2：Sample Selection and Data Sources:
TiO2 photoelectrodes were prepared and sensitized with the synthesized bodipy dyes.
3：List of Experimental Equipment and Materials:
Included TiO2 paste, FTO glass, bodipy dyes, N719 dye, and various chemicals for synthesis and characterization.
4：Experimental Procedures and Operational Workflow:
Detailed synthesis of bodipy dyes, preparation of TiO2 photoelectrodes, dye sensitization, and fabrication of PECs.
5：Data Analysis Methods:
Spectroscopic characterization (UV/Vis, FTIR, XPS), photovoltaic measurements (J-V curves), and analysis of photovoltaic parameters.
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Keithley 2400 source meter
2400
Keithley
Photocurrent measurements under one-sun illumination.
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Perkin Elmer Lambda 950
Lambda 950
Perkin Elmer
UV/Vis absorption spectra measurement.
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Bruker FTIR Spectrometer Alpha II
Alpha II
Bruker
Fourier-transform infrared (FTIR) spectra recording.
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Thermo Scientific K-alpha photoelectron spectrometer
K-alpha
Thermo Scientific
X-Ray photoelectron spectroscopy (XPS) analysis.
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Bruker D8 discovery X-Ray diffractometer
D8 discovery
Bruker
X-Ray diffraction (XRD) analysis.
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TiO2 paste
DSL-18NRT
GreatCell Solar
Used for preparing TiO2 photoelectrodes by doctor blading onto FTO glass.
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FTO glass
Substrate for TiO2 photoelectrodes.
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ruthenizer 535-bisTBA
Solaronix
Dye sensitizer for TiO2 photoelectrodes.
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Horiba FluoroMax-4
FluoroMax-4
Horiba
Photoluminescence (PL) spectra recording.
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