Zhou Qian, Liu Baibai, Shai Xuxia, Li Yuelong, He Peng, Yu Hua, Chen Cong, Xu Zong-Xiang, Wei Dong, Chen Jiangzhao
Key Laboratory of Optoelectronic Technology & Systems (Ministry of Education), College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China.
Institute of Physical and Engineering Science/Faculty of Science, Kunming University of Science and Technology, Kunming 650500, China.
Chem Commun (Camb). 2023 Apr 4;59(28):4128-4141. doi: 10.1039/d2cc07048k.
2D/3D perovskite heterojunctions exhibit promising prospects in the improvement of efficiency and stability of perovskite solar cells (PSCs). However, many challenges remain in the development of high-quality 2D/3D heterojunctions, such as a reliable pathway to control the perovskite phase and generally poor performance in inverted (p-i-n) devices, which limit their commercialization. Fortunately, many excellent works have proposed lots of strategies to solve these challenges, which have triggered a new wave of research on 2D/3D perovskite heterojunctions in recent years. In this paper, the latest research progress and the critical factors involved in the modulating mechanisms of PSCs with 2D/3D heterojunctions have been summarized and laid out systematically. The advantages of constructing 2D/3D perovskite heterojunctions in PSCs are highlighted, and the problems and related solutions of low-dimensional perovskites as passivation layers towards high-performance PSCs are also discussed in depth. Finally, the prospects of 2D/3D perovskite heterojunctions utilized in the passivation strategies to further improve the photovoltaic performance of PSCs in the future have been presented.
二维/三维钙钛矿异质结在提高钙钛矿太阳能电池（PSC）的效率和稳定性方面展现出广阔前景。然而，高质量二维/三维异质结的发展仍面临诸多挑战，比如缺乏控制钙钛矿相的可靠途径，以及倒置（p-i-n）器件的性能普遍较差，这些都限制了它们的商业化进程。幸运的是，许多出色的研究工作提出了诸多策略来解决这些挑战，这在近年来引发了对二维/三维钙钛矿异质结的新一轮研究热潮。本文系统地总结并阐述了具有二维/三维异质结的PSC调控机制的最新研究进展及相关关键因素。突出了在PSC中构建二维/三维钙钛矿异质结的优势，同时深入探讨了低维钙钛矿作为高性能PSC钝化层所存在的问题及相关解决方案。最后，展望了二维/三维钙钛矿异质结在未来用于钝化策略以进一步提升PSC光伏性能的前景。
