研究目的
To investigate the application of MgTiO3-coated TiO2 mesoporous scaffold layers in perovskite solar cells (PSCs) based on carbon counter electrode (CCE) for retarding charge recombination and improving photovoltaic performance.
研究成果
The introduction of MgTiO3-coated TiO2 nanoparticles significantly improves the photovoltaic performance of PSCs by retarding charge recombination and promoting perovskite film crystallization. A PCE of 10.39% was achieved with excellent long-term stability, indicating potential for future commercial application.
研究不足
The study focuses on the effect of MgTiO3 coating on TiO2 mesoporous layers for PSCs with carbon counter electrodes. The scalability and cost-effectiveness for large-scale industrial production are not deeply explored.
1：Experimental Design and Method Selection
Fabrication of MgTiO3-coated TiO2 mesoporous scaffold layers via a simple sintering route and application in PSCs with carbon counter electrode.
2：Sample Selection and Data Sources
Patterned FTO glasses, PbI2, methylammonium iodide (CH3NH3I, MAI), and other reagents were used. TiO2 paste consisted of TiO2 monocrystalline with average grain size of ~25 nm.
3：List of Experimental Equipment and Materials
X-ray diffraction (XRD), high-resolution transmission electron microscope (HRTEM), field-emission scanning electron microscopy (FESEM), UV-vis absorption spectra, electrochemical impedance spectroscopy (EIS).
4：Experimental Procedures and Operational Workflow
Preparation of TiO2 compact layers, treatment with TiCl4 aqueous solution, spin-coating of TiO2 precursor, annealing, immersion in Mg(NO3)2 ethanol solution, sintering, spin-coating of perovskite precursor solution, heating, and blade-coating of carbon paste.
5：Data Analysis Methods
Analysis of crystal structure and phase purity by XRD, morphology observation by FESEM, optical absorption measurement by UV-vis spectrophotometer, photovoltaic properties testing by digital source meter, and EIS for charge recombination analysis.
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