Organic-inorganic hybrid perovskite solar cells (PSCs) have attracted tremendous attention due to their unique optoelectronic properties, power conversion efficiency (PCE), cost-effectiveness, and solution processability. [1][2][3][4][5] Within a few years, the PCE of 3D (3D) perovskite materials based PSCs has rapidly soared from 3.8% to 25.8%, which is comparable with that of the state-of-art monocrystalline silicon solar cells. [6][7][8] However, because of their intrinsic structural characteristics, 3D perovskites still suffer from poor stability in ambient conditions, when exposed to UV light, moisture, heat, and electric field, which limits the commercialization potential of the PSCs. [9][10][11][12][13] To address the longterm stability issue, 1D perovskites are emerging as ideal alternatives due to their structural diversity, tunable optical properties, and superior environmental stability. [14][15][16] From the molecular level, the 1D perovskites, are different from the morphological 1D nanowires, nanofibers, and nanorods. [17] Typically, the [PbX 6 ] 4À octahedral surrounded by organic cations are corner-sharing, edge-sharing, or face-sharing to form a 1D perovskites chain. [18,19] 1D perovskite show superb stability by taking the advantage of the improvement of the skeleton strength attribute to the "shoulder to shoulder" arrangement of [PbX 6 ] 4À and the protection of organic cations. [20] By incorporating large organic cations into the 3D perovskite precursor or post-