Ultrafast ion migration in hybrid perovskite polycrystalline thin films under light and suppression in single crystals

著者: Jie Xing, Qi Wang, Qingfeng Dong, Yongbo Yuan, Yanjun Fang, Jinsong Huang - Physical Chemistry Chemical Physics 2016 被引用: 428

under 0.02 Sun. Ion migration across the photoactive layers in most OIHP devices thus takes only subseconds under 1 Sun illumination, which is much shorter than what it was thought to take. Most important of all, ion migration through a single crystal surface is still too slow to be observed even after illumination for two days due to the large ion diffusion activation energy, >0.38 eV.