研究目的
Investigating the effects of 2-aminoterephthalic acid as a cross-linking agent on the defect passivation of grain boundaries in perovskite solar cells to enhance their efficiency and stability.
研究成果
The use of 2-aminoterephthalic acid as a cross-linking agent effectively passivates defects at grain boundaries, enlarges perovskite grain size, and improves film hydrophobicity, leading to PSCs with a PCE of 21.09% and enhanced stability. This strategy presents a promising approach for developing efficient and stable PSCs.
研究不足
The study focuses on the passivation effects of 2-aminoterephthalic acid on grain boundaries but does not explore its impact on other types of defects within the perovskite layer. The long-term stability under operational conditions beyond 1000 hours was not investigated.
1：Experimental Design and Method Selection:
A two-step deposition method was used to produce MAPbI3 films, followed by spin-coating with 2-aminoterephthalic acid at different concentrations and annealing.
2：Sample Selection and Data Sources:
Perovskite films treated with varying concentrations of 2-aminoterephthalic acid were analyzed.
3：List of Experimental Equipment and Materials:
Scanning electron microscope (SEM), atomic force microscopy (AFM), conductive atomic force microscopy (C-AFM), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), steady-state photoluminescence (PL) spectroscopy, time-resolved photoluminescence (TRPL) spectroscopy.
4：Experimental Procedures and Operational Workflow:
Films were characterized for morphology, crystallinity, and optoelectronic properties. Devices were fabricated and tested for photovoltaic performance.
5：Data Analysis Methods:
Analysis of SEM, AFM, C-AFM images, FTIR, XPS, XRD patterns, PL spectra, and photovoltaic parameters.
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