研究目的
Investigating the use of ultrasonic spray-coating for the fabrication of high-efficiency and low-cost perovskite solar cells.
研究成果
Demonstrated the feasibility of spray-coating for fabricating high-efficiency perovskite solar cells, with potential for scalable manufacturing. Highlighted the importance of controlling defect density for improved device performance and reproducibility.
研究不足
Variability in performance between devices due to defects in the perovskite and spiro-OMeTAD layers, and the need for further optimization to reduce defect density.
1：Experimental Design and Method Selection:
Utilized ultrasonic spray-coating to deposit thin films of tin oxide, a triple-cation perovskite, and spiro-OMeTAD.
2：Sample Selection and Data Sources:
Fabricated devices on small-area (15 × 20 mm) and large-area (25 × 75 mm) ITO substrates.
3：List of Experimental Equipment and Materials:
Prism Ultra-coat 300 system, Sonotek Exactacoat system, np-SnO2, perovskite precursor, spiro-OMeTAD.
4：Experimental Procedures and Operational Workflow:
Sequential deposition of layers via spray-coating, vacuum-flash assisted solution processing for perovskite crystallization, and thermal evaporation for gold top contact.
5：Data Analysis Methods:
Current-voltage measurements under AM 1.5 illumination, external quantum efficiency measurements, surface profilometry, and laser-beam-induced current mapping.
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