ИСТИНА

The discovery of inorganic and hybrid iodoplumbates with exciting photovoltaic properties has agitated a renewed interest in iodometallates. Started with only 3% of energy conversion efficiency in 2009 [1], these compounds have quickly achieved an appreciable level of nearly 20% by the beginning of 2015 [2] owing to the improved methods of preparation, doping, and cell assembling. However, besides various problems associated with their stability and scaling, iodoplumbates possess an intrinsic imperfection: they contain toxic lead, which is readily bio-available owing to the instant solubility of compounds in water [3]. In response to this issue, other iodometallates have become increasingly attractive, with tin, antimony and bismuth being the most explored metals [4]. In this paper, we discuss recent discoveries in the field of chemistry of iodoplumbate perovskite photovoltaics and provide insights into chemistry of alternative iodometallates and their potential as light-harvesting materials.