Zhou Yu, Li Xin, Lin Hong
State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, P. R. China.
Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen, 361005, P. R. China.
Small. 2020 Apr;16(15):e1902579. doi: 10.1002/smll.201902579. Epub 2019 Aug 7.
Organometallic mixed halide perovskite solar cells (PSCs) have emerged as a promising photovoltaic technology with increasingly improved device efficiency exceeding 24%. Charge transport layers, especially electron transport layers (ETLs), are verified to play a vital role in device performance and stability. Recently, metal oxides (MOs) have been widely studied as ETLs for high-performance PSCs due to their excellent electronic properties, superb versatility, and great stability. This Review briefly discusses the development of PSCs' architecture and outlines the requirements for MO ETLs. Additionally, recent progress of MO ETLs from preparation to optimization for efficient PSCs is systematically summarized and highlighted to associate the versatility of MO ETLs with the performance of devices. Finally, a summary and prospectives for the future development of MO ETLs toward practical application of high-performance PSCs are drawn.
有机金属混合卤化物钙钛矿太阳能电池（PSC）已成为一种很有前途的光伏技术，器件效率不断提高，超过了24%。电荷传输层，特别是电子传输层（ETL），已被证实对器件性能和稳定性起着至关重要的作用。最近，金属氧化物（MO）因其优异的电子性能、卓越的通用性和高度的稳定性，作为高性能PSC的ETL受到了广泛研究。本综述简要讨论了PSC结构的发展，并概述了对MO ETL的要求。此外，系统地总结并突出了MO ETL从制备到优化以实现高效PSC的最新进展，将MO ETL的通用性与器件性能联系起来。最后，对MO ETL在高性能PSC实际应用方面的未来发展进行了总结和展望。
