研究目的
Investigating how the performance of each group of solar cells was affected by different durations of TiCl4 treatment during fabrication.
研究成果
For all groups of samples, treated samples showed much better I-V characteristics than non-treated, with up to 50% improvement in PCE. The difference in the performance improvement was investigated, highlighting the effectiveness of TiCl4 treatment in enhancing solar cell performance.
研究不足
The study focuses on the effect of TiCl4 treatment on TiO2 blocking layers created by two specific methods. Other deposition methods or treatments were not explored.
1：Experimental Design and Method Selection:
The study involved fabricating organolead halid perovskite CH3NH3PbI3 solar cells with all-mesoporous device structure using TiO2 blocking layer created by two different methods (spin-coating and magnetron sputtering followed by thermal oxidation).
2：Sample Selection and Data Sources:
Three groups of devices were tested with different TiO2 blocking layer deposition methods and TiCl4 treatment durations (0, 30, 45, and 60 minutes).
3：List of Experimental Equipment and Materials:
The materials used include TiO2 for the blocking layer and TiCl4 for treatment. The methods include spin-coating and magnetron sputtering.
4：Experimental Procedures and Operational Workflow:
The TiO2 blocking layer was either spin-coated or grown by magnetron sputtering of metallic Ti followed by thermal oxidation. Different durations of TiCl4 treatment were applied.
5：Data Analysis Methods:
The performance of the solar cells was evaluated based on I-V characteristics and PCE improvement.
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