研究目的
Investigating the use of conjugated polyelectrolyte PFN-I at the interfaces between the hole transport layer (HTL)/perovskite and perovskite/electron transport layer (ETL) to enhance the performance and stability of perovskite solar cells (PSCs).
研究成果
The integration of PFN-I at both HTL/perovskite and perovskite/ETL interfaces significantly enhances the PCE and stability of PSCs. The multifunctional PFN-I molecule improves wettability, passivates defects, and enhances ambient stability, demonstrating its potential for interface engineering in efficient and stable PSCs.
研究不足
The study focuses on the use of PFN-I in inverted planar PSCs and its effects on device performance and stability. The applicability of PFN-I to other PSC architectures or materials is not explored.
1：Experimental Design and Method Selection:
The study employs PFN-I at the interfaces of HTL/perovskite and perovskite/ETL in inverted planar heterojunction PSCs to improve device performance and stability.
2：Sample Selection and Data Sources:
The study uses triple-cation lead binary-halide perovskite as the absorber layer and poly-TPD and PCBM as the HTL and ETL, respectively.
3：List of Experimental Equipment and Materials:
Includes SEM, AFM, C-AFM, ToF-SIMS, XRD, and XPS for characterization.
4：Experimental Procedures and Operational Workflow:
Involves spin-coating PFN-I on poly-TPD, perovskite deposition, and additional PFN-I coating on perovskite surface, followed by thermal annealing.
5：Data Analysis Methods:
PL intensity, dark J-V curves, and light intensity-dependent Jsc and Voc measurements are used to analyze the passivation effect and device performance.
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