Universal Current Losses in Perovskite Solar Cells Due to Mobile Ions

Jarla Thiesbrummel, Vincent M. Le Corre, Francisco Peña-Camargo, Lorena Perdigón-Toro, Felix Lang, Fengjiu Yang, Max Grischek, Emilio Gutierrez-Partida, Jonathan Warby, Michael D. Farrar, Suhas Mahesh, Pietro Caprioglio, Steve Albrecht, Dieter Neher, Henry J. Snaith, Martin Stolterfoht

Adv. Energy Mater. Sept. 2021, 2101447

doi.org/10.1002/aenm.202101447

In the paper, the researchers performed an analysis of current (performance) losses in PPV devices.

1) analyse changes in PLQY upon time (Voc -> Jsc) and link it to extraction problems caused by ions

2) perform various transient electric measurements to analyse electronic and ionic charge densities

They used the Absorption and Drift-Diffusion modules of Setfos to simulate transient current decay with mobile ions and 1) extract the ion density by fitting with experimental data, 2) show that electronic doping would not cause a current decay in contrast to ions and their experiments.