ae8b00222_si_001.pdf (816.31 kB)
Inkjet-Printed Triple Cation Perovskite Solar Cells
journal contribution
posted on 2018-04-18, 00:00 authored by Florian Mathies, Helge Eggers, Bryce S. Richards, Gerardo Hernandez-Sosa, Uli Lemmer, Ulrich W. PaetzoldNoncontact
inkjet printing offers rapid and digital deposition combined with
excellent control over the layer formation for printed perovskite
solar cells. In this work, inkjet printing is used to deposit triple
cation perovskite layers with 10% cesium in a mixed formamidinium/methylammonium
lead iodide/bromide composite for solar cells with high temperature
and moisture stability. A reliable process control over a wide range
of perovskite layer thickness from 175 to 780 nm and corresponding
grain sizes is achieved by adjusting the drop spacing of the inkjet
printer cartridge. 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 inkjet-printed
methylammonium lead triiodide perovskite solar cells. Moreover, this
work highlights the extended resistance of triple cation perovskite
solar cells against heat and moisture for our ambient inkjet printing
approach. The presented results are a proof of concept for the processability
of high efficiency perovskite solar cells using digital inkjet printing
for next generation photovoltaic applications.