研究目的
Investigating the effect of incorporating lithium fluoride (LiF) as part of the buffer layer in inverted perovskite solar cells (PVSCs) to suppress the decomposition of perovskite layer and enhance device stability.
研究成果
Incorporating LiF as part of the buffer layer in inverted PVSCs significantly enhances device stability by preventing the decomposition of perovskite layer and protecting the metal electrode from damage. The device with C60/LiF buffer layer maintains 87% of its initial efficiency after aging in N2 for 26 days, demonstrating a viable approach for improving the stability of PVSCs for commercialization.
研究不足
The study focuses on the stability improvement in N2 environment, and the effect of LiF under other environmental conditions like humidity and oxygen is not explored. The thickness of LiF layer and its impact on device performance could be further optimized.
1：Experimental Design and Method Selection:
The study employed a two-step deposition method to prepare perovskite layer and used C60/LiF bilayer as part of the buffer layer to prevent decomposition of perovskite layer.
2：Sample Selection and Data Sources:
ITO-coated glass substrates were used as the base for device fabrication.
3：List of Experimental Equipment and Materials:
Materials included PEDOT:PSS, CH3NH3I, PbI2, C60, LiF, PC61BM, BCP, and Al. Equipment included a Keithley 2400 source meter for J-V measurements, D/Max-3A diffractometer for XRD, and CHI660 electrochemical workstation for EIS measurements.
4：Experimental Procedures and Operational Workflow:
Devices were fabricated by spin-coating and thermal evaporation under vacuum.
5：Data Analysis Methods:
J-V curves, XRD patterns, and EIS measurements were analyzed to evaluate device performance and stability.
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