Matthew T. Klug,Rebecca L. Milot,Jay B. Patel,Thomas Green,Harry C. Sansom,Michael D. Farrar,Alexandra J. Ramadan,Samuele Martani,Zhiping Wang,Bernard Wenger,James M. Ball,Liam Langshaw,Annamaria Petrozza,Michael B. Johnston,Laura M. Herz,Henry J. Snaith
By correlating photovoltaic and material properties with metal content, we identify compositional ranges of low and high optoelectronic quality in (FA0.83Cs0.17)(Pb1−ySny)I3 perovskites.