Inkjet Printed Perovskite Photovoltaics

Abstract

In this contribution, we report on our recent advances on non-contact inkjet-printed perovskite photovoltaics. Digital inkjet printing offers rapid deposition of perovskite absorber layers for large area perovskite absorber layers as well as perovskite solar cells of arbitrary shape. By adjusting the drop spacing of the inkjet printer cartridge, we demonstrate excellent control of the perovskite layer formation and perovskite layer thickness. Our digitally inkjet-printed triple cation perovskite solar cells with 10% cesium in a mixed formamidinium/ methylammonium lead iodide/bromide composite reach initial efficiencies as high as 14.0%. Moreover, a continuous power output at constant voltage, resulting in a power conversion efficiency of 12.9% is demonstrated, representing a major improvement from previously reported results.