研究目的
To improve the performance of ZnO flexible dye sensitized solar cells by incorporating graphene oxide (GO) to enhance efficiency and fill factor.
研究成果
The incorporation of graphene oxide into ZnO significantly improved the efficiency of flexible dye-sensitized solar cells. The best performance was observed with 0.2 wt% GO, which enhanced current density and efficiency without altering the crystalline structure of ZnO. The electrophoretic deposition method proved effective for fabricating flexible solar cells.
研究不足
The study did not explore the long-term stability of the ZnO-GO solar cells under operational conditions. The effect of higher GO concentrations beyond 0.4 wt% was not investigated.
1：Experimental Design and Method Selection:
The study involved modifying ZnO photocatalyst with graphene oxide (GO) through high-energy milling and fabricating the anode of flexible dye-sensitized solar cells (FDSSC) via electrophoretic deposition onto flexible electrodes.
2：Sample Selection and Data Sources:
Commercial ZnO powder and graphene oxide were used to prepare ZnO-GO photocatalysts with varying GO concentrations (
3：1, 2, and 4 wt%). List of Experimental Equipment and Materials:
Equipment included a planetary mill (Retsch model PM 100), solar simulator (Abet Technologies sunLite model 11002), and potentiostat (Gill AC). Materials included ZnO powder (Jalmek), graphene oxide, and poly-ethylene terephthalate (PET) doped with indium tin oxide (ITO).
4：Experimental Procedures and Operational Workflow:
The ZnO-GO photocatalyst was synthesized by high-energy ball milling, followed by thermal treatment. The anode was fabricated by electrophoretic deposition, and the FDSSC was assembled in a sandwich configuration.
5：Data Analysis Methods:
The materials were characterized by FTIR, XRD, XPS, and SEM-EDS. The efficiency and fill factor were estimated from I-V curves under simulated sunlight.
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