Moisture-induced non equilibrium phase segregation in triple cation mixed halide perovskite monitored by in situ characterization techniques and solid-state NMR Mohammad Ali Akhavan Kazemi, Nicolas Folastre, Parth Raval, Michel Sliwa, Jean Marie Vianney Nsanzimana, Sema Golonu, Arnaud Demortiere, Jean Rousset, Olivier Lafon, Laurent Delevoye, G.N. Manjunatha Reddy, Frédéric Sauvage Energy & Environmental Materials, 2023