研究目的
Investigating the synergistic effect of tetrahydrofuran (THF) and Al2O3 on the performance improvement of hole conductor free perovskite solar cells.
研究成果
The study demonstrates that the addition of THF improves the quality of perovskite films, and the introduction of an ultra-thin Al2O3 layer at the interface of TiO2/perovskite suppresses charge recombination, leading to improved photovoltaic performance. The PVSCs show excellent long-term stability under ambient conditions, providing a facile way for the future commercialization of efficient low-cost HTM-free PVSCs.
研究不足
The study does not discuss the scalability of the fabrication process or the cost-effectiveness of the materials used. Additionally, the long-term stability beyond 1000 hours under ambient conditions is not explored.
1：Experimental Design and Method Selection:
The study employed a sequential deposition method to fabricate PVSCs on mesoporous films, using THF as an additive solvent to improve the quality of perovskite film and introducing an ultra-thin Al2O3 film at the interface of TiO2/perovskite to suppress charge recombination.
2：Sample Selection and Data Sources:
The samples included perovskite films grown from PbI2 without and with THF, and PVSCs based on Al2O3/TiO2 and pure TiO2 scaffold.
3：List of Experimental Equipment and Materials:
Equipment included a solar simulator (Oriel Sol 3A class AAA, Newport), UV–vis spectrophotometer (PerkinElmer Lambda 1050), FESEM (Sirion FEG, USA), HRTEM (JEOL JEM-2010 FEF (UHR)), and XPS (Thermo Fisher ESCALAB 250Xi). Materials included PbI2, THF, DMF, AlCl3?6H2O, and block copolymer P
4：Experimental Procedures and Operational Workflow:
1 The procedure involved the preparation of PbI2 precursor solutions, fabrication of solar cells, and characterization of the films and devices.
5：Data Analysis Methods:
Data analysis included absorbance spectra, XRD patterns, photoluminescence decay, J?V curves, and IPCE spectra.
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