Mechanism of Tin Oxidation and Stabilization by Lead Substitution in Tin Halide Perovskites
Stanford University · SLAC National Accelerator Laboratory · +1 more institution
Abstract
The recent development of efficient binary tin- and lead-based metal halide perovskite solar cells has enabled the development of all-perovskite tandem solar cells, which offer a unique opportunity to deliver high performance at low cost. Tin halide perovskites, however, are prone to oxidation, where the Sn2+ cations oxidize to Sn4+ upon air exposure. Here, we identify reaction products and elucidate the oxidation mechanism of both ASnI3 and ASn0.5Pb0.5I3 (where A can be made of methylammonium, formamidinium, cesium, or a combination of these) perovskites and find that substituting lead onto the B site fundamentally changes the oxidation mechanism of tin-based metal halide perovskites to make them more stable…
Citation impact
- FWCI
- 20.61
- Percentile
- 100%
- References
- 19
Authors
5- TLTomas LeijtensCorresponding
Stanford University
- RPRohit Prasanna
Stanford University
- AGAryeh Gold‐Parker
SLAC National Accelerator Laboratory, Stanford Synchrotron Radiation Lightsource, Stanford University
- MFMichael F. Toney
SLAC National Accelerator Laboratory, Stanford Synchrotron Radiation Lightsource
- MDMichael D. McGehee
Stanford University
Topics & keywords
- Tin
- Halide
- Perovskite (structure)
- Formamidinium
- Chemistry
- Inorganic chemistry
- Metal
- Tandem