研究目的
Investigating the performance of PTB7-Th:PC70BM inverted OPV with different electron transport layers under outdoor and indoor illumination conditions.
研究成果
The choice of ETL significantly affects the performance of PTB7-Th:PC70BM inverted OPV under different illumination conditions. PFN-ETL shows the best outdoor performance but the lowest indoor performance, while ZnO-ETL exhibits the best indoor performance. The findings suggest that optimizing ETL materials can enhance OPV performance for specific applications.
研究不足
The study is limited to PTB7-Th:PC70BM based OPVs and does not explore other active materials. The indoor performance is evaluated only under LED 2700K illumination.
1：Experimental Design and Method Selection:
The study compared the performance of PTB7-Th:PC70BM inverted OPV with three different ETLs (PFN, TiOx, and ZnO) under both outdoor (1 sun) and indoor (LED 2700K) illumination conditions.
2：Sample Selection and Data Sources:
The samples were fabricated using ITO/ETL/PTB7-Th:PC70BM/V2O5/Ag structure.
3：List of Experimental Equipment and Materials:
Equipment included a Keithley 2400 Source Measure Unit, solar simulator, LED lamp, atomic force microscopy (AFM), UV-Vis spectrometer, and impedance analyzer. Materials included PTB7-Th, PC70BM, PFN, TiOx, ZnO, and V2O
4：Experimental Procedures and Operational Workflow:
The devices were fabricated by spin-coating the ETLs onto ITO-glass substrates, followed by the active layer and electrode deposition. Performance was evaluated under different light intensities.
5：Data Analysis Methods:
Data were analyzed using J-V characteristics, EQE spectra, AFM, UV-Vis, and impedance spectroscopy.
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