研究目的
To improve the performance of SnO2 film as an electron transport layer (ETL) in perovskite solar cells (PSCs) by treating it with ethanol vapor during the annealing process, thereby enhancing the power conversion efficiency (PCE) of the PSCs.
研究成果
The ethanol vapor treatment during the annealing process significantly improves the electrical properties of SnO2 ETL, leading to enhanced PSC performance. The treated devices show higher VOC and FF, achieving a champion PCE of 17.66%. This method offers a simple and effective way to improve PSC efficiency by optimizing the ETL properties.
研究不足
The study focuses on the ethanol vapor treatment's effect on SnO2 ETL properties and PSC performance but does not explore the long-term stability of the treated devices under operational conditions. Additionally, the method's scalability and cost-effectiveness for large-scale production are not discussed.
1：Experimental Design and Method Selection:
The study proposes a novel ethanol vapor treatment method during the thermal annealing process of SnO2 quantum dots (QDs) film to enhance its properties as an ETL in PSCs.
2：Sample Selection and Data Sources:
The SnO2 QD precursor solution was synthesized and deposited on ITO substrates. Perovskite layers were prepared on these ETLs using a one-step method with chlorobenzene as an anti-solvent.
3：List of Experimental Equipment and Materials:
Materials include SnCl2·2H2O, thiourea, ethanol, PbI2, CH3NH3I, Spiro-OMeTAD, etc. Equipment includes FE-SEM, UV-vis-NIR spectrometer, XRD, PVIV-201V I-V Station, and CHI660E electrochemical workstation.
4：Experimental Procedures and Operational Workflow:
The SnO2 film was annealed at 200°C for 1 h with or without ethanol vapor treatment. Perovskite films were then deposited and annealed at 100°C for 12 min. Devices were completed with Spiro-OMeTAD and Ag layers.
5：Data Analysis Methods:
The performance of the films and devices was analyzed using SEM, UV-vis absorbance, XRD, J-V characteristics, CV, and EIS measurements.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
