“…Organic-inorganic metal halides have received enormous attention worldwide because of their interesting applications in optoelectronics, [1] ferroelectricity, [2,3] dielectric properties, [4] photoluminescence, [5,6] nonlinear optics, [7,8] and other domains. [9,10] Traditionally, inorganic materials such as lead zirconate titanate [11] and barium titanate [12,13] have played an essential role in device making, including memory devices, actuators, infrared detectors, piezoelectric sensors, flexible sensors, and capacitors, but at the cost of metal toxicity, and other environmental problems.…”