研究目的
To design low-temperature processed flexible CsPbI2Br perovskite solar cells (PSCs) with high performance and stability by introducing Al-doped ZnO (AZO) as an electron-transport layer and tert-butyl cyanoacetate (t-BCA) as a passivation layer.
研究成果
The introduction of AZO as ETL and t-BCA as a passivation layer significantly improves the performance and stability of flexible CsPbI2Br PSCs under low-temperature process, achieving a high PCE of 15.08%. The devices exhibit excellent mechanical stability and retain a high percentage of their initial efficiency under various stress conditions.
研究不足
The study focuses on low-temperature processed flexible CsPbI2Br PSCs, which may have different performance characteristics compared to high-temperature processed devices. The scalability and cost-effectiveness of the proposed method for industrial applications are not discussed.
1：Experimental Design and Method Selection:
The study introduces AZO as an electron-transport layer and t-BCA as a passivation layer to enhance the quality of perovskite films and the reproducibility of the PSCs under low-temperature process.
2：Sample Selection and Data Sources:
CsPbI2Br perovskite films are prepared on flexible substrates with different ETLs (SnO2, ZnO, AZO) to investigate their effects on film quality and device performance.
3：List of Experimental Equipment and Materials:
Includes SEM for film morphology, XRD for crystallinity, UV-vis absorption and PL spectra for optical properties, and XPS for surface chemistry analysis.
4：Experimental Procedures and Operational Workflow:
The perovskite films are deposited on different ETLs, followed by t-BCA passivation. The devices are then characterized for photovoltaic performance and stability.
5：Data Analysis Methods:
The performance of PSCs is evaluated through J-V curves, EQE spectra, and stability tests under various conditions.
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