研究目的
Investigating the effect of integrating a ZnO:Al (AZO) charge injection layer into dye-sensitized solar cells (DSSCs) to improve power conversion efficiency (PCE).
研究成果
The integration of a thin AZO charge injection layer improves DSSC performance by preventing electrolyte contact with FTO and enhancing charge injection. Optimal precursor concentration is crucial for performance, with deviations leading to reduced efficiency due to coverage issues or light absorption/scattering.
研究不足
The study identifies a narrow experimental window for beneficial integration of AZO charge injection layer into the DSSC, with performance degradation at both lower and higher precursor concentrations due to incomplete coverage and reduced light transparency, respectively.
1：Experimental Design and Method Selection:
The study employs a sol-gel deposition method for the AZO charge injection layer on FTO conducting glass before TiO2 photoanode coating.
2：Sample Selection and Data Sources:
Glass substrates were cleaned and AZO nanoparticle solution was prepared. DSSCs were fabricated using AZO coated FTO substrates as photoanodes.
3：List of Experimental Equipment and Materials:
Spin coater, SEM (FEI Quanta 400), XRD (Siemens D5000), UV–vis NIR spectroscopy (Hitachi U-4100), Keithley 2400 source-measure unit, solar simulator (Science-tech).
4：Experimental Procedures and Operational Workflow:
AZO coating was deposited and sintered. TiO2 nanoparticles were coated onto AZO/FTO glass substrates, sintered, and immersed in dye solution. DSSCs were constructed and sealed.
5：Data Analysis Methods:
Structural and optoelectronic properties were analyzed using SEM, XRD, and UV–vis spectroscopy. Photovoltaic performances were measured under illumination.
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