Towards a Perovskite Tandem Future

Our latest approach to 4T perovskite/Direct Wafer silicon tandem PV modules will be presented. As energy demand continues to increase globally, solar photovoltaic (PV) technology needs to respond with ever-increasing module efficiency – and better energy yield. Archetypical single-junction silicon technology has an upper module efficiency limit of ~24%, though by applying a metal halide perovskite top cell and a bifacial module design, module efficiency can increase to over 30% and leverage up to 30% albedo light (i.e., reflected light available to the backside of the module). Concurrently, as noted by Swanson’s Law, this increase in PV deployment is expected to also come at an ever declining price, typically registered in $/W(name plate). As such, CubicPV looks to pair its very low-cost printed perovskite technology as our top cells with our kerfless silicon Direct Wafer technology as the basis for our bottom cells. Most importantly, by combining printed perovskite materials with kerfless silicon, CubicPV aims to produce an area-efficient PV module with very low embedded energy and carbon, as compared to standard silicon PV derived from the Czochralski single crystal process.