研究目的
To investigate the effect of electron collection and transportation for TiO2 electron transport layer (ETL) of the mesoscopic perovskite solar cells (PSCs) and to enhance their performance and stability.
研究成果
The study concludes that optimizing the fabrication process of TiO2 ETL significantly enhances the performance and stability of PSCs. The best-performing PSC achieved a PCE of 19.39% for small cells and 16.03% for sub-modules under AM1.5G illumination, and an outstanding PCE of 25.49% under indoor light conditions.
研究不足
The study focuses on the optimization of TiO2 ETL properties and their impact on PSC performance. Potential limitations include the scalability of the fabrication process and the long-term stability of PSCs under operational conditions.
1：Experimental Design and Method Selection:
The study systematically investigates the influence of compact TiO2 layer (c-TiO2) with various spray cycles, the particle size effect of mesoporous TiO2 (meso-TiO2) film, and post-treatment of TiO2 electrode on PSCs performance.
2：Sample Selection and Data Sources:
Various sizes of TiO2 nanoparticles are synthesized and used to prepare meso-TiO2 films. The performance of PSCs is measured under different conditions.
3：List of Experimental Equipment and Materials:
Includes SEM for surface morphology, XRD for phase identification, UV-vis spectrophotometer for absorption spectra, and solar simulator for J-V measurements.
4：Experimental Procedures and Operational Workflow:
The fabrication process involves spray pyrolysis for c-TiO2, screen printing for meso-TiO2, and spin-coating for perovskite layer.
5：Data Analysis Methods:
The performance of PSCs is analyzed based on J-V characteristics, IPCE, and stability tests.
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