Gallop Nathaniel P, Selig Oleg, Giubertoni Giulia, Bakker Huib J, Rezus Yves L A, Frost Jarvist M, Jansen Thomas L C, Lovrincic Robert, Bakulin Artem A
Ultrafast Optoelectronics Group, Department of Chemistry , Imperial College London , London SW7 2AZ , U.K.
AMOLF , Science Park 104 , 1098 XG Amsterdam , The Netherlands.
J Phys Chem Lett. 2018 Oct 18;9(20):5987-5997. doi: 10.1021/acs.jpclett.8b02227. Epub 2018 Oct 3.
The dynamics of organic cations in metal halide hybrid perovskites (MHPs) have been investigated using numerous experimental and computational techniques because of their suspected effects on the properties of MHPs. In this Perspective, we summarize and reconcile key findings and present new data to synthesize a unified understanding of the dynamics of the cations. We conclude that theory and experiment collectively paint a relatively complete picture of rotational dynamics within MHPs. This picture is then used to discuss the consequences of structural dynamics for electron-phonon interactions and their effect on material properties by providing a brief account of key studies that correlate cation dynamics with the dynamics of the inorganic sublattice and overall device properties.
由于有机阳离子对金属卤化物杂化钙钛矿（MHP）性质的潜在影响，人们已使用多种实验和计算技术对其动力学进行了研究。在本综述中，我们总结并梳理了关键发现，并展示了新数据，以形成对阳离子动力学的统一理解。我们得出结论，理论和实验共同描绘了MHP内部旋转动力学的相对完整图景。然后，通过简要介绍将阳离子动力学与无机亚晶格动力学及整体器件性质相关联的关键研究，利用这一图景来讨论结构动力学对电子 - 声子相互作用的影响及其对材料性质的作用。
