研究目的
Investigating the enhancement of dye-sensitized solar cells (DSSCs) efficiency using Ti–Nb alloy photoanodes with a mesoporous oxide surface.
研究成果
Photoanodes fully covered with mesoporous Nb-doped TiO2 layer were successfully fabricated, showing improved conversion efficiency of DSSCs. The mesoporous Ti–Nb photoanode enhanced conversion efficiency by 15.2% to 18.3%, with a greater ability to inhibit recombination of electrons and holes at the interfaces.
研究不足
The study focused on Ti-6wt% Nb alloy sheets and may not be directly applicable to other alloy compositions or different types of solar cells.
1：Experimental Design and Method Selection:
The study involved the preparation of photoanode electrodes using Ti–Nb alloy and pure Ti sheets, treated with H2O2 solution and annealed at different temperatures.
2：Sample Selection and Data Sources:
Ti and Ti-6wt% Nb sheets were used as substrates.
3：List of Experimental Equipment and Materials:
SEM (JEOL JSM-6700F), XRD (BRUKER D8 SSS), TEM (JEOL JEM-2100F), solar simulator (Yamashita Denso Corp., YSS-E40, Japan), digital source meter (Keithley Instruments Model 2400, USA), potentiostat/galvanostat (Autolab, Eco-Chemie, PGSTAT 302 N, Netherlands).
4：Experimental Procedures and Operational Workflow:
The surface was polished, rinsed, dipped into H2O2 solution, annealed, and then screen-printed with TiO2 paste. The performance of the DSSCs was measured under AM
5：5 illumination. Data Analysis Methods:
The photocurrent–voltage (J–V) curve was measured, and electrochemical impedance spectrum (EIS) was recorded under dark conditions.
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SEM
JSM-6700F
JEOL
Observing surface morphology
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XRD
D8 SSS
BRUKER
Characterizing the phase and crystallinity of the treated substrate surface
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TEM
JEM-2100F
JEOL
Investigating the interface structure
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Solar simulator
YSS-E40
Yamashita Denso Corp.
Measuring the performance of the DSSCs under AM1.5 illumination
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Digital source meter
Model 2400
Keithley Instruments
Measuring the photocurrent–voltage (J–V) curve
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Potentiostat/galvanostat
PGSTAT 302 N
Autolab, Eco-Chemie
Recording the electrochemical impedance spectrum (EIS) of DSSC under dark conditions
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