研究目的
Investigating the use of triazatruxene-based hyperbranched conjugated polymers and small molecules as hole-transporting materials in planar perovskite solar cells to enhance photovoltaic performance.
研究成果
The study demonstrates that hyperbranched conjugated polymers, particularly TATF8HBP, are effective as HTMs in p-PSCs, offering superior hole transport and extraction capabilities compared to small molecules. The findings suggest a promising direction for the development of high-efficiency PSCs using organic HTMs.
研究不足
The study is limited by the poor conductivity of the small molecule TATCz3, which restricts its effectiveness as an HTM. Additionally, the stability of the devices in air without packaging is a concern, especially for TATCz3-based devices.
1：Experimental Design and Method Selection:
The study involves the synthesis of triazatruxene-based hyperbranched conjugated polymers and a small molecule, followed by their application as HTMs in p-PSCs. The photovoltaic performance is evaluated under standard AM 1.5G simulated illumination.
2：5G simulated illumination.
Sample Selection and Data Sources:
2. Sample Selection and Data Sources: The materials used include TATCz3, TATF8HBP, and TATSFHBP. The p-PSCs are fabricated with the architecture ITO/SnO2/CH3NH3PbI3/HTL/Ag.
3：List of Experimental Equipment and Materials:
Equipment includes SEM for film morphology, PL for hole extraction analysis, EIS for charge transfer investigation, and J-V measurements for photovoltaic performance.
4：Experimental Procedures and Operational Workflow:
The HTMs are spin-coated onto the perovskite layer. The devices are then characterized for their photovoltaic properties and stability.
5：Data Analysis Methods:
The data is analyzed to compare the performance of the different HTMs, focusing on PCE, Jsc, Voc, and FF.
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