近年来反式结构钙钛矿电池因具有稳定性高、迟滞效应小及易构成高效叠层器件等优点而受到广泛关注,空穴传输层的选择与优化对电池的性能至关重要。NiOx基空穴传输层具有化学稳定性好、空穴迁移率高、带隙宽度大等特点,在反式钙钛矿电池中得到广泛应用。系统介绍了相比其他空穴传输层材料,选择NiOx基空穴传输层材料的优劣势,重点阐述了氧气等离子体处理法和紫外臭氧处理法的研究进展及对薄膜质量、表面性能和能带排列的影响,详细论述了通过碱和碱土金属掺杂、过渡金属掺杂、稀土金属及有机分子掺杂以及共掺杂的方法提升NiOx基空穴传输层光、电性能的进展情况以及对器件转换效率和稳定性的影响,最后对未来NiOx基反式结构钙钛矿电池规模化制备应提升的关键点进行了展望。
In recent years,inverted perovskite solar cells (IPSCs) have garnered significant attention due to their high stability,low hysteresis and easy integration into tandem devices with high efficiency.The selection and optimization of hole transport layer (HTL) are crucial to the performance of these solar cells.Owing to its chemical stability,high hole mobility and wide bandgap,NiOx-based hole transport layer is widely applied in IPSCs.This paper systematically introduced the advantages and disadvantages of NiOx-based hole transport layer compared with other hole transport layer materials,and focused on the research progress of oxygen plasma treatment and ultraviolet ozone treatment,as well as their effects on film quality,surface properties and band alignment.It discussed in detail the advancements in enhancing the optical and electrical properties of NiOx-based hole transport layer by alkali and alkaline earth metal doping,transition metal doping,rare earth metal and organic molecule doping,and co-doping methods,as well as the impact on the conversion efficiency and stability of devices.Finally,it discussed the key points that need to be improved for the large-scale preparation of NiOx-based IPSCs in the future.
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基金资助
安徽省科技厅重大专项项目(201903a05020017);安徽省重点研究与开发计划项目(2023a05020003)