钝化
材料科学
钙钛矿(结构)
光电子学
能量转换效率
电流密度
氧化物
化学工程
图层(电子)
纳米技术
冶金
物理
量子力学
工程类
作者
Naba Kumar Rana,Pijus Kanti Samanta
标识
DOI:10.1016/j.matlet.2023.134689
摘要
Aluminium doped zinc oxide (AZO) is a potential replacement for the conventionally used TiO2 as an electron transport layer (ETL) in low-temperature solution processes for hybrid perovskite solar cells (PvSCs). However, the defects and energy-band mismatch at the ETL/perovskite interface accelerate the interfacial carrier's recombination, leading to a decrease in the fill factor (FF) and current density (JSC). To address this issue, a thin interfacial modification layer of monoethanolamine (MEA) has been used which not only reduces the energy barrier between AZO/perovskite for accelerating the charge transfer but also passivates the trap states on the perovskite interface. Due to the synergistic effect of charge extraction promotion and trap density passivation , the champion PvSCs exhibit a higher value of PCE of 8.25 % with a current density (JSC) of 22.59 mA/cm2 and FF of 46.55% compared to the without MEA passivate PvSCs and the device maintains 70% of its topmost PCE after 1000 h under ambient atmosphere, without any encapsulation. This interface engineering based on MEA provides a feasible and excellent strategy to fabricate the PvSCs with improved efficiency and stability of planar device architecture.
科研通智能强力驱动
Strongly Powered by AbleSci AI