实验室乔文成等同学在The Journal of Physical Chemistry C
期刊上发表了题为 《Illumination-Induced Changes in Methylammonium Lead Bromine Perovskites. An In Situ2H NMR Study》的文章，通讯作者为姚叶锋老师和王雪璐老师，发表日期为2021年4月28日。（https://doi.org/10.1021/acs.jpcc.1c01814）
Methylammonium lead bromine (MAPbBr3) perovskites have shown great potential for a wide variety of optoelectronic applications. However, the structural and dynamic properties of MAPbBr3 have been typically probed in the absence of illumination. The present study addresses this issue by applying in situ solid-state 2H nuclear magnetic resonance (NMR) spectroscopy to investigate the rotational dynamics and orientations of MA cations in the different phase structures of MAPbBr3 in detail. The results indicate that the orientations of the MA cations in MAPbBr3 are widely distributed and that illumination induces changes in the rotational dynamics of the MA cations, while the apparent distribution of their orientations remains nearly unchanged. These results are expected to provide a useful viewpoint for understanding the molecular factors affecting the optoelectronic properties of MAPbBr3.
