Fig. 8: Slow crystallization by sLBA additives.
From: Manipulating the crystallization kinetics of halide perovskites for large-area solar modules
a NMP was introduced to prepare FACsPbI3 in a pure DMF system. The hydrogen bonding between NMP and FAI can promote the formation of the α-FACsPbI3 phase. The strong coordination between NMP and PbI2 can delay the crystallization to improve the crystal quality of the film. Reprinted with permission from ref. 19, copyright 2021 American Association for the Advancement of Science. b DPSO was introduced to prepare FACsPbI3 in the DMF/NMP system. Compared with DMF and NMP, DPSO has stronger coordination with PbI2 to delay crystallization, which is more beneficial to improving the crystal quality of the film. Reprinted with permission from ref. 74, copyright 2021 American Association for the Advancement of Science.
