研究目的
Investigating the use of C8-BTBT as a hole transport material to replace PEDOT:PSS in inverted perovskite solar cells for improved efficiency and stability.
研究成果
C8-BTBT serves as an effective hole transport material in inverted perovskite solar cells, offering higher power conversion efficiency and improved stability compared to PEDOT:PSS. The hydrophobic nature of C8-BTBT contributes to the formation of high-quality perovskite films with large grain sizes and enhanced moisture stability.
研究不足
The study is limited to the comparison between C8-BTBT and PEDOT:PSS as HTLs in inverted perovskite solar cells. The long-term stability under varying environmental conditions beyond 25±5% relative humidity was not explored.
1：Experimental Design and Method Selection:
The study involved the fabrication of inverted perovskite solar cells using C8-BTBT as the hole transport layer (HTL) and comparing its performance with PEDOT:PSS. The influence of annealing temperature on C8-BTBT film properties and device performance was investigated.
2：Sample Selection and Data Sources:
ITO coated glass substrates were used as the base. Perovskite films were deposited on different HTLs (PEDOT:PSS and C8-BTBT with varying annealing conditions).
3：List of Experimental Equipment and Materials:
Equipment included a spin coater, UV-Ozone cleaner, solar simulator, SEM, XRD, PL spectrometer, and UPS. Materials included C8-BTBT, PEDOT:PSS, MAPbI3, PCBM, and BCP.
4：Experimental Procedures and Operational Workflow:
The process involved substrate cleaning, HTL deposition, perovskite layer deposition, electron transport layer deposition, and electrode evaporation. The devices were then characterized for performance and stability.
5：Data Analysis Methods:
J-V curves, EQE spectra, SEM, XRD, PL, and UPS were used to analyze the device performance, film morphology, and charge transfer properties.
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