研究目的
Investigating the enhancement of efficiency and stability in all-inorganic perovskite solar cells through the engineering of carbon electrodes incorporating carbon nanotubes and Ti3C2-MXene nanosheets.
研究成果
The incorporation of CNTs and Ti3C2-MXene into carbon paste significantly enhances the conductivity and carrier transport in CsPbBr3-based solar cells, achieving a PCE of 7.09%. This mixed carbon electrode strategy offers a promising route for developing high-efficiency, stable, and cost-effective inorganic PSCs for large-scale applications.
研究不足
The study acknowledges the lower initial PCE of devices without HTL compared to those with HTL, and the potential decomposition of CsPbBr3 in moisture and oxidation of Ti3C2 in air, which could affect long-term stability.
1：Experimental Design and Method Selection:
The study employs a mixed carbon electrode approach by incorporating CNTs and Ti3C2-MXene into a commercial carbon paste to enhance conductivity and carrier transport in CsPbBr3-based solar cells.
2：Sample Selection and Data Sources:
CsPbBr3 films were fabricated via a two-step vapor deposition method. Commercial carbon paste, CNTs, and Ti3AlC2 powder were used as materials.
3：List of Experimental Equipment and Materials:
Equipment includes a vacuum chamber for film deposition, SEM for morphology analysis, XRD for structural characterization, UV-vis spectrophotometer for optical properties, and a Keithley 2636 system for J-V measurements.
4：Experimental Procedures and Operational Workflow:
The process involves the deposition of CsPbBr3 films, preparation of mixed carbon paste, device fabrication with FTO/c-TiO2/CsPbBr3/mixed carbon structure, and characterization of optical and electrical properties.
5：Data Analysis Methods:
Performance parameters such as Voc, Jsc, FF, and PCE were extracted from J-V curves. EQE spectra were analyzed to understand the photocurrent generation.
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