MAPbCl3钙钛矿中甲胺阳离子运动的固体2H NMR研究 |
梁佳琪,乔文成,姚叶锋 |
Solid-state 2H NMR Study of the Motion of CH3NH3+ in MAPbCl3 Perovskite |
Jia-qi LIANG,Wen-cheng QIAO,Ye-feng YAO |
图3 MA的(a)运动模型Ⅱ和(b)拟合2H NMR谱.拟合过程中,围绕C-N键内旋转的速率和局部晃动的速率均在fast limit区间,σ值从0˚增加到20˚.为了使图更加清晰,MA中部分原子被省略 |
Fig.3 (a) The motion model Ⅱ of MA cation; (b) Simulated 2H NMR spectra showing the effect of the wobbling motion in Fig. (a). In the simulation, σ increases from 0˚ to 20˚. The speeds of the rotation along the C-N bond and wobbling motion are both set to fast limit. Some atoms in the MA cation are omitted for clarity |