研究目的
Investigating the microstructure of the compact TiO2 layer formed by atomic layer deposition for optimization of organometal halide perovskite solar cells.
研究成果
The amorphous ALD c-TiO2 layer was found to enhance PSC performance by reducing defects. Optimization of growth temperature (225°C) and thickness (11 nm with mp-TiO2) achieved a record efficiency of 18.36%, with potential for further improvements.
研究不足
The study is limited to the optimization of growth temperature and thickness of the ALD c-TiO2 layer. Other variables such as gas flow rate and precursor retainment time were not optimized, suggesting potential for further improvement.
1：Experimental Design and Method Selection:
The study focused on optimizing the ALD c-TiO2 layer for PSCs by investigating its microstructure and deposition conditions.
2：Sample Selection and Data Sources:
FTO substrates were used for depositing c-TiO2 layers, with various growth temperatures and thicknesses.
3：List of Experimental Equipment and Materials:
ALD system (GEMStar-4XT, Arradiance), FTO substrates, TDMAT precursor, H2O, TEM (Hitachi HF-3300), UV-Vis spectrometer (Shimadzu UV3600).
4：0). Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: Deposition of c-TiO2 layers at different temperatures and thicknesses, followed by baking and characterization.
5：Data Analysis Methods:
TEM observation, absorbance spectra measurement, and J-V characterization under AM 1.5 G illumination.
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