Strontium Insertion in Methylammonium Lead Iodide: Long Charge Carrier Lifetime and High Fill-Factor Solar Cells

Daniel Pérez-Del-Rey; Dávid Forgács; Eline M Hutter; Tom J Savenije; Dennis Nordlund; Philip Schulz; Joseph J Berry; Michele Sessolo; Henk J Bolink

doi:10.1002/adma.201603016

Strontium Insertion in Methylammonium Lead Iodide: Long Charge Carrier Lifetime and High Fill-Factor Solar Cells

Adv Mater. 2016 Nov;28(44):9839-9845. doi: 10.1002/adma.201603016. Epub 2016 Sep 22.

Authors

Daniel Pérez-Del-Rey¹, Dávid Forgács¹, Eline M Hutter², Tom J Savenije², Dennis Nordlund³, Philip Schulz⁴, Joseph J Berry⁴, Michele Sessolo¹, Henk J Bolink¹

Affiliations

¹ Instituto de Ciencia Molecular, Universidad de Valencia, C/J. Beltran 2, 46980, Paterna, Spain.
² Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, 2629, HZ Delft, The Netherlands.
³ Stanford Linear Accelerator Campus, Stanford Synchrotron Laboratory, Menlo Park, CA, 94025, USA.
⁴ National Center for Photovoltaics, National Renewable Energy Laboratory, 15013 Denver West Parkway, Golden, CO, 80401, USA.

PMID: 27717027
DOI: 10.1002/adma.201603016

Abstract

The addition of Sr²⁺ in CH₃ NH₃ PbI₃ perovskite films enhances the charge carrier collection efficiency of solar cells leading to very high fill factors, up to 85%. The charge carrier lifetime of Sr²⁺ -containing perovskites is in excess of 40 μs, longer than those reported for perovskite single crystals.

Keywords: doping; lifetime; perovskites; solar cells; strontium.