Immanuel Philip Nathaniel, Huang Song-Jeng, Danchuk Viktor, Sedova Anastasiya, Prilusky Johnathan, Goldreich Achiad, Shalom Hila, Musin Albina, Yadgarov Lena
Department of Mechanical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan.
Department of Chemical Engineering, Faculty of Engineering, Ariel University, Ariel 4076414, Israel.
Nanomaterials (Basel). 2022 Dec 15;12(24):4454. doi: 10.3390/nano12244454.
Halide perovskites-based solar cells are drawing significant attention due to their high efficiency, versatility, and affordable processing. Hence, halide perovskite solar cells have great potential to be commercialized. However, the halide perovskites (HPs) are not stable in an ambient environment. Thus, the instability of the perovskite is an essential issue that needs to be addressed to allow its rapid commercialization. In this work, WS nanoparticles (NPs) are successfully implemented on methylammonium lead iodide (MAPbI) based halide perovskite solar cells. The main role of the WS NPs in the halide perovskite solar cells is as stabilizing agent. Here the WS NPs act as heat dissipater and charge transfer channels, thus allowing an effective charge separation. The electron extraction by the WS NPs from the adjacent MAPbI is efficient and results in a higher current density. In addition, the structural analysis of the MAPbI films indicates that the WS NPs act as nucleation sites, thus promoting the formation of larger grains of MAPbI. Remarkably, the absorption and shelf life of the MAPbI layers have increased by 1.7 and 4.5-fold, respectively. Our results demonstrate a significant improvement in stability and solar cell characteristics. This paves the way for the long-term stabilization of HPs solar cells by the implementation of WS NPs.
基于卤化物钙钛矿的太阳能电池因其高效率、多功能性和可承受的加工成本而备受关注。因此，卤化物钙钛矿太阳能电池具有巨大的商业化潜力。然而，卤化物钙钛矿（HPs）在环境中不稳定。因此，钙钛矿的不稳定性是一个需要解决的关键问题，以便其能够快速商业化。在这项工作中，WS纳米颗粒（NPs）成功应用于基于甲基碘化铅（MAPbI）的卤化物钙钛矿太阳能电池。WS NPs在卤化物钙钛矿太阳能电池中的主要作用是作为稳定剂。在这里，WS NPs充当散热体和电荷转移通道，从而实现有效的电荷分离。WS NPs从相邻的MAPbI中提取电子的效率很高，并导致更高的电流密度。此外，对MAPbI薄膜的结构分析表明，WS NPs充当成核位点，从而促进形成更大的MAPbI晶粒。值得注意的是，MAPbI层的吸收率和保质期分别提高了1.7倍和4.5倍。我们的结果表明稳定性和太阳能电池特性有了显著改善。这为通过实施WS NPs实现HPs太阳能电池的长期稳定铺平了道路。
