研究目的
Investigating the effects of dye molecule orientation and molecular orbitals on the performance of solid-state dye sensitized solar cells.
研究成果
The orientation of dye molecules and the distribution of HOMO/LUMO states significantly affect the performance of dye-sensitized solar cells. The study provides insights into optimizing dye orientation and molecular orbital distribution for improved device efficiency.
研究不足
The study identifies partial relationships between dye orientation and device performance but acknowledges that further studies are needed to untangle the effects and enhance understanding.
1：Experimental Design and Method Selection:
The study uses three variants of cyanine dyes in n-TiO2/Dye/p-CuSCN heterojunction to investigate the effects of dye molecule orientation on device performance.
2：Sample Selection and Data Sources:
Three cationic pentamethine cyanine dyes, named T-49, T-50, and T-55, were synthesized and used.
3：List of Experimental Equipment and Materials:
TiO2 films were prepared on fluorine-doped-conducting tin oxide (FTO) glass plates. IV characteristics were recorded using a calibrated halogen lamp and a KEITHELY 2400 source meter.
4：Experimental Procedures and Operational Workflow:
Dye molecules were coated over the TiO2 film, and p-CuSCN was deposited over the dye coating. The IV characteristics and photocurrent action spectra were measured.
5：Data Analysis Methods:
The absorption spectra were obtained using Ocean Optics USB2000 UV–VIS spectrometer. The HOMO-LUMO, the MM2 Minimization of the molecules, and the solvent accessible surfaces of the molecules were evaluated using Chemdraw? (Chem3D Pro 12.0) software.
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Ocean Optics USB2000 UV–VIS spectrometer
USB2000
Ocean Optics
Used to obtain absorption spectra.
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KEITHELY 2400 source meter
2400
KEITHELY
Used to record IV characteristics of the cells.
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FTO glass plates
Used as a substrate for TiO2 films in dye-sensitized solar cells.
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SP-DK480 monochromator
DK480
Used to measure photocurrent action spectra.
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SR-850 lock-in amplifier
850
Used in the setup for measuring photocurrent action spectra.
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Chemdraw? (Chem3D Pro 12.0) software
Chem3D Pro 12.0
Chemdraw
Used to evaluate HOMO-LUMO, MM2 Minimization of the molecules, and to calculate the solvent accessible surfaces of the molecules.
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