研究目的
To develop a highly transparent MS2@N-doped C film material as a counter electrode in bifacial CdS/CdSe quantum dot-sensitized solar cells to address the issues of poor conductivity and tedious post-treatment procedures of existing counter electrode materials.
研究成果
The study successfully developed highly transparent MS2@N-doped C films as efficient counter electrodes for bifacial CdS/CdSe QDSSCs. The NiS2@N-doped C film exhibited the highest power conversion efficiencies under both front and reverse illumination, demonstrating superior catalytic activity and stability. The findings suggest that these materials have great potential for the future commercialization of high-performance bifacial QDSSCs.
研究不足
The study focuses on the development and characterization of MS2@N-doped C films as counter electrodes in QDSSCs. The limitations include the need for further optimization of the film's transparency and conductivity, as well as scalability for large-scale production.
1：Experimental Design and Method Selection:
The study involved the development of MS2@N-doped C film materials through layer-by-layer self-assembly of M-TCPP films, followed by sulfuration treatment to form the final counter electrode material.
2：Sample Selection and Data Sources:
The materials used included Ni-TCPP and Fe-TCPP films, sulfur powder, and conductive glass substrates. Characterization was performed using SEM, TEM, XPS, IR, UV–vis spectroscopy, XRD, CV, EIS, and Tafel-polarization measurements.
3：List of Experimental Equipment and Materials:
Scanning electron microscopy (SEM, Nova. Nano SEM 450), high-resolution transmission electron microscopy (TEM, Jem-2100F), X-ray photoelectron spectroscopy (XPS, Escalab 250Xi), infrared (IR) spectrometer (Bruker VERTEX 80), UV–vis spectrophotometer (Agilent 8453), X-ray diffractometer (D/Max 2400), electrochemical analyzer (CHI 660E), and solar simulator (AM1.5G 100 mw/cm2).
4：5G 100 mw/cm2).
Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The M-TCPP films were prepared and then treated with sulfur powder under argon atmosphere to form MS2@N-doped C films. These films were used as counter electrodes in CdS/CdSe QDSSCs, which were assembled and tested for photovoltaic performance.
5：Data Analysis Methods:
The electrochemical performance was analyzed using CV, EIS, and Tafel-polarization measurements. The photovoltaic performance was evaluated based on J-V curves under simulated sunlight.
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