研究目的
Investigating the efficiency and hysteresis-free performance of planar perovskite solar cells using a hybrid electron transport layer of SnO2 and carbon nanotubes.
研究成果
The SnO2-CNT hybrid ETL significantly improves the conductivity and reduces the trap-state density of SnO2 films, leading to efficient electron extraction and transport. This results in a high efficiency of 20.33% in hysteresis-free perovskite solar cells, showing a 13.58% enhancement over conventional devices.
研究不足
The study is limited by the sensitivity of device performance to CNT concentration in the SnO2-CNT film and potential agglomeration of CNTs at higher concentrations.
1：Experimental Design and Method Selection:
A hybrid ETL of SnO2 and CNTs was fabricated by thermally decomposing a mixed solution of SnCl4·5H2O and pre-treated CNTs.
2：Sample Selection and Data Sources:
Single-walled CNTs and SnCl4·5H2O were used as materials.
3：List of Experimental Equipment and Materials:
SEM for imaging, UV-Vis spectrophotometer for absorption spectra, and a solar simulator for J-V curve measurement.
4：Experimental Procedures and Operational Workflow:
The SnO2-CNT hybrid ETL was obtained by spin-coating and annealing in air at 180°C.
5：Data Analysis Methods:
Conductivity and trap-state density were calculated from J-V tests and SCLC 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
