PEROVSKITE SOLAR CELL, METHODS AND USES THEREOF

Abstract

The present disclosure relates a process for immobilization of soluble lead compounds in perovskite solar cells in the case of the cell breakage or of fire by introducing the additives in the cells. The said additives in the presence of water interact with lead-based components of the perovskite cell via ion-exchange reaction forming less soluble compounds with higher thermal stability. The less soluble lead compounds formed in the disclosed method reduce by two orders of magnitude the release of lead ions from perovskite cell if it leaks. Another aspect of the disclosure is described as an additive in the perovskite cell of a water absorber made from hydrophilic polymer; it swallows the water, expands inside the cell blocking the water path through cracks in the cell. The release of lead from the perovskite solar cell with the disclosed additives was reduced by four orders of magnitude compared to a blank cell.