研究目的
Investigating the prospects of iron oxide films and their sulfidation for dye-sensitized solar cells (DSSC).
研究成果
The ion energies of all positive ions, especially of Ar+ and Fe+, measured by the mass spectrometer with energetic analyzer showed energies below 3 eV. The addition of oxygen to the working gas inside the reaction chamber led to a shift of plasma potential to negative values. Raman spectroscopy clearly showed a strong correlation between the color of the iron oxide film and its phase composition. A relatively clean pyrite phase was obtained from the magnetite, while the marcasite with admixture of the pyrite phase was obtained from the hematite. SEM images demonstrated low influence of sulfidation on the films’ microstructure. The sulfidation extended the light absorption to up to 800 nm.
研究不足
The study focuses on the preparation and characterization of iron oxide and iron sulfide films for DSSC applications, but does not extensively explore their photovoltaic performance or long-term stability under operational conditions.
1：Experimental Design and Method Selection:
Iron oxide thin films were prepared by hollow cathode plasma jet (HCPJ) sputtering, with an admixture of oxygen in the argon working gas and with an iron nozzle as the sputtering target. The discharge was powered by a constant current source in continuous mode and by a constant voltage source in pulsed mode.
2：Sample Selection and Data Sources:
The substrates were glass, silicon wafer and fluorine doped tin oxide (FTO) glass.
3：List of Experimental Equipment and Materials:
Hollow cathode plasma jet (HCPJ), energy-resolved mass spectrometer, secondary electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), absorption and Raman spectra.
4：Experimental Procedures and Operational Workflow:
The deposition of iron with various oxygen concentrations and plasma parameters, followed by sulfidation of the samples in a furnace.
5：Data Analysis Methods:
Plasma composition was measured by an energy-resolved mass spectrometer. Moreover, SEM, EDX, absorption and Raman spectra of the films are presented.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
