Retrograde solubility of formamidinium and methylammonium lead halide perovskites enabling rapid single crystal growth.
Here we show the retrograde solubility of various hybrid perovskites through the correct choice of solvent(s) and report their solubility curves. Retrograde solubility enables to develop inverse temperature crystallization of FAPbX3 (FA = HC(NH2)2(+), X = Br(-)/I(-)). FAPbI3 crystals exhibit a 1.4 eV bandgap--considerably narrower than their polycrystalline counterparts.
Division of Physical Sciences and Engineering, Solar and Photovoltaics Engineering Research Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Soudi Arabia. osman.bakr@kaust.edu.sa.
Makhsud I
MI
Saidaminov
Division of Physical Sciences and Engineering, Solar and Photovoltaics Engineering Research Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Soudi Arabia. osman.bakr@kaust.edu.sa and Department of Chemistry, Faculty of Science, Mansoura University, Mansoura, 35516, Egypt.
Ahmed L
AL
Abdelhady
Division of Physical Sciences and Engineering, Solar and Photovoltaics Engineering Research Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Soudi Arabia. osman.bakr@kaust.edu.sa.
Giacomo
G
Maculan
Division of Physical Sciences and Engineering, Solar and Photovoltaics Engineering Research Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Soudi Arabia. osman.bakr@kaust.edu.sa.
Osman M
OM
Bakr