“…At the same time, the potential and capacities of such a search are considerably limited by the current level of development of synthetic approaches to CANBIC perovskites. Typical synthetic protocols are rather unflexible and energy-consuming, requiring the presence of concentrated HCl 8,16,19,21,28,31,32,41,42 or application of prolonged hydrothermal treatments and/or annealings 8,16,18,19,26 . Attempts to make the synthesis of CANBICs and related compounds more environmentally friendly by mimicking syntheses of lead-based halide perovskites, such as antisolvent-or oversaturation-induced crystallization, either yield mixtures of multiple phases with a low control over the crystallization dynamics 16,32,33,43 or do not cover the entire possible ranges of compositions 32,43 .…”