研究目的
To develop a low-cost, easily synthesizable, and dopant-free hole transporting material (HTM) for perovskite solar cells (PSCs) that exhibits high hole mobility, conductivity, and stability.
研究成果
The study successfully demonstrated the use of benzimidazolium-based OIPCs as efficient HTMs for PSCs, achieving a PCE of up to 18.1% with good stability. This opens new avenues for the design of cost-effective and stable HTMs for PSCs.
研究不足
The study is limited by the performance of OIPCs compared to some high-performance HTMs, and the need for further optimization to enhance PCE and stability.
1：Experimental Design and Method Selection:
The study involved the synthesis of two OIPCs (OIPC-I and OIPC-Br) through a microwave-assisted method, characterized by NMR, UV-vis spectroscopy, DSC, TGA, SEM, and photoelectron spectroscopy.
2：Sample Selection and Data Sources:
The OIPCs were synthesized using phenoxazine donor clubbed with alkyl substituted benzimidazole having iodide and bromide anions.
3：List of Experimental Equipment and Materials:
Instruments used include Bruker 400 MHz NMR, Shimadzu UV-vis spectroscopy, TGA-2000S system, PerkinElmer DSC, SEM (S-4800, Hitachi), and photoelectron spectrometer (AC-2, Riken-Keiki Co.).
4：Experimental Procedures and Operational Workflow:
The synthesis involved three steps, followed by characterization and device fabrication.
5：Data Analysis Methods:
Data were analyzed using CorrView and Zplot software for impedance spectroscopy, and hole mobility was determined by the SCLC method.
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