Cation redistribution enables low-temperature stabilization of MA-free FAPbI3
Metal halide perovskites have reshaped photovoltaic research, with formamidinium lead triiodide (FAPbI3) standing out as a top contender for single-junction solar cells due to its ideal band gap. However, obtaining its photoactive black phase, especially at low processing temperatures, remains a key challenge, as it te...