研究目的
Investigating the efficiency improvement of polymer solar cells by using multi-functional cascade electron transport layers.
研究成果
The incorporation of In2O3 and PCBM significantly increases the Voc and PCE of PSCs by reducing defect states and enhancing electron transport. The study demonstrates the importance of lattice matching and interface engineering in improving the performance of PSCs.
研究不足
The intrinsic incompatibility between inorganic charge transport layer and organic active layer still needs further improvement. The performance of devices with higher PCBM concentration begins to deteriorate due to decreased conductivity.
1：Experimental Design and Method Selection:
The study involves the fabrication of PSCs with a structure of ITO/In2O3/ZnO/PCBM/PTB7:PC71BM/MoO3/Ag, focusing on the electron extraction ability of the interface layer.
2：Sample Selection and Data Sources:
The samples include PSCs based on ZnO, In2O3/ZnO, and In2O3/ZnO/PCBM with different concentrations of PCBM.
3：List of Experimental Equipment and Materials:
Materials used include zinc acetate, indium nitrate hydrate, PCBM, PTB7:PC71BM, MoO3, and Ag. Equipment includes spin-coating apparatus and vacuum evaporation system.
4：Experimental Procedures and Operational Workflow:
The process involves spin-coating of In2O3 and ZnO layers, annealing, deposition of PCBM and active layers, and evaporation of MoO3 and Ag electrodes.
5：Data Analysis Methods:
Performance parameters such as Voc, Jsc, FF, and PCE were measured and analyzed. Techniques like XRD, PL, AFM, and EIS were used for characterization.
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