研究目的
Investigating the synthesis of cyclo[60]fullerenes with 5-membered-carbon-ring and their application in perovskite solar cells to achieve high power conversion efficiency.
研究成果
The fullerene-cation-mediated synthesis method enables the production of cyclo[60]fullerenes with a 5-membered-ring in scalable yields. These fullerenes show excellent device applicability in perovskite solar cells, achieving a high power conversion efficiency of 20.7%. The design of fullerene derivatives with balanced solubility, high reorganization energy, and ability to passivate the active layer interface is crucial for their application in perovskite solar cells.
研究不足
The synthesis is limited to certain derivatives with low yields, and the device application is constrained by the solubility and hydrophobicity of some fullerene derivatives.
1：Experimental Design and Method Selection:
The synthesis involves the use of aryl[60]fullerene cations as intermediates, generated in situ by heating aryl[60]fullerenyl dimers in the presence of CuBr
2：Sample Selection and Data Sources:
Arylhydro[60]fullerenes (ArC60H) were prepared as precursors.
3：List of Experimental Equipment and Materials:
C60, PC61BM, PbI2, methylammonium iodide (MAI), anhydrous solvents (DMF, DMSO, o-DCB, CB), Spiro-MeOTAD, SnO2 precursor solution.
4：Experimental Procedures and Operational Workflow:
Synthesis of aryl bromides, Grignard reagents, arylhydro[60]fullerenes, aryl[60]fullerenyl dimers, and finally the titled FIFs (5a–g).
5：Data Analysis Methods:
NMR spectra, high-resolution mass spectra (HRMS), cyclic voltammetry, valence band and Fermi levels measurements, photovoltaic characterization, and measurement.
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