研究目的
To develop efficient and stable lead-free perovskite solar cells (PSCs) by incorporating a conjugated large-volume amine (LVA) as an additive to modify FASnI3 film, aiming to improve film quality, charge extraction, and device stability.
研究成果
The incorporation of a conjugated LVA, PPA, into FASnI3 perovskite films significantly improves film quality, charge extraction, and device stability, leading to efficient PSCs with a PCE of 9.61% and demonstrating a self-healing effect. Large-area Sn-based PSCs achieved a PCE of 7.08%, highlighting the potential for eco-friendly lead-free photovoltaic devices.
研究不足
The study is limited by the need for further optimization of PPA content to maximize photovoltaic performance and stability. The scalability of the fabrication process for large-area devices also presents challenges.
1：Experimental Design and Method Selection:
The study involved the synthesis of PPA and its incorporation into FASnI3 perovskite films to investigate its effects on film quality and photovoltaic performance.
2：Sample Selection and Data Sources:
FASnI3 films with varying PPA content were prepared and characterized.
3：List of Experimental Equipment and Materials:
Materials included PEDOT: PSS, SnI2, SnF2, FAI, BCP, chlorobenzene, and DMSO. Equipment included SEM, AFM, XRD, UV-Vis spectrophotometer, PL spectroscopy, FTIR spectrometer, EIS workstation, and UPS.
4：Experimental Procedures and Operational Workflow:
Films were deposited via spin-coating, followed by annealing. Devices were fabricated with an inverted planar heterojunction structure.
5：Data Analysis Methods:
Data were analyzed using various spectroscopic and microscopic techniques, and DFT calculations were performed to understand the electronic properties.
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