研究目的
Investigating the use of block copolymer F127 as a passivation reagent to improve the performance and stability of organic-inorganic perovskite solar cells (PSCs) against moisture and heat.
研究成果
The incorporation of block copolymer F127 in conjunction with solvent annealing process significantly improved the photovoltaic performance and stability of organic-inorganic PSCs. The champion PSC achieved a PCE of 21.01% on rigid substrates and 18.71% on flexible substrates. The F127 passivation strategy effectively passivated defects at grain boundaries and suppressed perovskite decomposition against moisture and heat, offering a promising approach for high-performance and stable PSCs.
研究不足
The study acknowledges that the introduction of block copolymer into perovskite decreased the grain size dramatically due to its role as impurities, necessitating the use of solvent annealing to remedy the film quality deterioration.
1：Experimental Design and Method Selection:
The study employed block copolymer F127 as a passivation agent in conjunction with a solvent annealing (SA) process to enhance the performance and stability of PSCs. The methodology involved the preparation of perovskite precursor solutions with varying concentrations of F127, followed by spin-coating and annealing processes.
2：Sample Selection and Data Sources:
Perovskite films were fabricated on rigid and flexible substrates. The samples were characterized using SEM, XRD, UV-vis spectrophotometry, and time-resolved photoluminescence (TRPL).
3：List of Experimental Equipment and Materials:
Equipment included a Keithley2400 sourcemeter, solar simulator, SEM instrument (Hitachi S-4800), X-ray diffractometer (Rigaku Corp.), UV–vis spectrophotometer (PerkinElmer Lambda 1050), and contact angle meter (Tantec). Materials included PbI2, MAI, FAI, Pb(SCN)2, DMSO, DMF, and F
4：Experimental Procedures and Operational Workflow:
1 Perovskite precursor solutions were prepared and spin-coated onto substrates, followed by annealing. The films were then characterized, and PSCs were fabricated and tested for performance and stability.
5：Data Analysis Methods:
Data were analyzed using various characterization techniques to assess film quality, crystallinity, optical properties, and device performance.
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
