Understanding the Role of the Electron Selective Contact in Perovskite Solar Cells
Perovskite solar cells (PSC) have generated excitement in the field of emerging photovoltaics due to their high efficiencies, easy manufacturability and low cost. Over the last few years it has become clear that the electron selective layer is critical to the performance of perovskite solar cells. PSC have made large increases in efficiency, but there are still problems with long term stability. A number of researchers have shown that organic contacts can be used to drastically reduce JV hysteresis in PSC, but it has also been observed that the hysteresis reappears as the cell ages. This project will focus on better understanding the role of these selective contacts in perovskite solar cells – it will involve materials preparation, making complete solar cells and characterisation using a wide range of techniques (including AFM, SEM, XRD, PL and µ-SR). We also have the scope to look at non-standard perovskite materials with enhanced water stability and to work with the project partners to carry out long term stability testing on new devices. The supervisory team includes Dr. Petra Cameron and Dr. Simon Lewis at the University of Bath.