Haider Mustafa, Mudasar Farhan, Yang Junliang, Makarov Sergey
State Key Laboratory of Powder Metallurgy, School of Physics, Central South University, Changsha 410083, China.
Advance Solar Technology Institute, Xuancheng 242000, China.
ACS Appl Mater Interfaces. 2024 Sep 18;16(37):49465-49473. doi: 10.1021/acsami.4c11544. Epub 2024 Sep 9.
Lead halide perovskite solar cells (PSCs) have been rapidly developed in the past decade. With the development of a PSC, interface engineering plays an increasingly important role in maximizing device performance and long-term stability. We report a simple and effective interface engineering method for achieving improvement of PSCs up to 20% by employing unsubstituted pristine nickel phthalocyanine (NiPc). Thermal annealing of NiPc improves the interface between NiPc and perovskite because of the incorporation of NiPc molecules into the perovskite grain boundaries, which creates improvements in hole extraction from the perovskite absorber layer, as evidenced by time-resolved photoluminescence measurements. This significantly improves the charge transfer and collection efficiency, which are closely related to the improvement of the interface between perovskite and NiPc.
在过去十年中，卤化铅钙钛矿太阳能电池（PSC）得到了迅速发展。随着PSC的发展，界面工程在最大化器件性能和长期稳定性方面发挥着越来越重要的作用。我们报告了一种简单有效的界面工程方法，通过使用未取代的原始酞菁镍（NiPc）将PSC的性能提高了20%。NiPc的热退火改善了NiPc与钙钛矿之间的界面，这是因为NiPc分子掺入了钙钛矿晶界，时间分辨光致发光测量表明，这改善了从钙钛矿吸收层的空穴提取。这显著提高了电荷转移和收集效率，这与钙钛矿和NiPc之间界面的改善密切相关。
