研究目的
Investigating the effect of polyvinyl-alcohol/titanium dioxide (PVA/TiO2) nanofibers as a light scattering layer (LSL) on the performance of dye-sensitized solar cells (DSSCs).
研究成果
The incorporation of PVA/TiO2 nanofibers as LSL on TiO2 nanoparticles photoanodes significantly improves the PCE of DSSCs by reducing radiation loss and increasing electron excitation. This enhancement is attributed to the improved light scattering effect and increased electron life time.
研究不足
The study does not address the long-term stability of the DSSC devices with PVA/TiO2 nanofibers as LSL. The increase in internal resistance due to the addition of LSL slightly reduces the fill factor.
1：Experimental Design and Method Selection:
The study utilized electrospinning to prepare PVA/TiO2 nanofibers as LSL on TiO2 nanoparticles photoanodes.
2：Sample Selection and Data Sources:
TiO2 nanoparticles and PVA/TiO2 nanofibers were used as samples.
3：List of Experimental Equipment and Materials:
Materials included Ruthenizer 535-bis TBA (N719), Iodolyte Z-100, 3,4-ethylenedioxythiophene (EDOT), titanium tetraisopropoxide (TTIP), polyvinyl alcohol (PVA), and titanium dioxide (TiO2, Degussa P25). Equipment included FESEM (JEOL JSM-7600F), XRD Diffractometer (Shimadzu), and Autolab PGSTAT204 for EIS.
4：5). Equipment included FESEM (JEOL JSM-7600F), XRD Diffractometer (Shimadzu), and Autolab PGSTAT204 for EIS. Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The photoanodes were prepared using a doctor blade technique, and the DSSC devices were assembled by sandwiching the sensitized photoanodes and counter electrode.
5：Data Analysis Methods:
The performance of the DSSC devices was analyzed using J-V curves under illumination.
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Field emission scanning electron microscopy
JEOL JSM-7600F
JEOL
Morphological analysis
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X-ray diffraction
Shimadzu
Shimadzu
Crystallographic analysis
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Electrochemical impedance spectroscopy
Autolab PGSTAT204
Autolab
Electrochemical analysis
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Ruthenizer 535-bis TBA
N719
Solaronix SA
Dye for dye-sensitized solar cells
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Iodolyte Z-100
Solaronix SA
Electrolyte for dye-sensitized solar cells
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3,4-ethylenedioxythiophene
EDOT
Sigma Aldrich
Material for counter electrode
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titanium tetraisopropoxide
TTIP
Sigma Aldrich
Precursor for TiO2
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polyvinyl alcohol
PVA
Sigma Aldrich
Polymer source for nanofibers
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titanium dioxide
Degussa P25
Sigma Aldrich
Photoanode material
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Indium tin oxide
ITO 7Ω/sq
Xinyan Technology Ltd
Conductive substrate
-
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