研究目的
Investigating the film formation mechanism of organic–inorganic hybrid perovskite solar cells and controlling the solvate phase using an additive system.
研究成果
The suppression of the PbI2:DMF solvate phase by CHP molecules overcame the unbalanced crystal growth rate of MAI and PbI2, leading to small grains and a dense perovskite film morphology. This resulted in the best photovoltaic performance with excellent reproducibility.
研究不足
The study focuses on the one-step spin-coating method, which is more intricate than the two-step method due to the simultaneous reaction of perovskite crystallization. The precise exploration of some intermediates could form future work.
1：Experimental Design and Method Selection:
In situ grazing incidence wide-angle X-ray scattering (GIWAXS) was used to study the film formation mechanism. Various additive systems were employed to adjust the crystal growth rate.
2：Sample Selection and Data Sources:
CH3NH3PbI3 perovskite material based on various additive systems was used.
3：List of Experimental Equipment and Materials:
Atomic force microscopy (AFM), scanning electron microscopy (SEM), in situ UV-Vis spectra, and in situ GIWAXS measurements were utilized.
4：Experimental Procedures and Operational Workflow:
Perovskite films were fabricated via one-step spin-coating method. The crystallization behavior was monitored through in-depth analysis.
5：Data Analysis Methods:
The intensity transition at 525 nm was fitted by a bi-exponential function to analyze the in situ UV-Vis results.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
