| Full text | |
| Author(s): |
Total Authors: 4
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| Affiliation: | [1] Univ Fed ABC, Santo Andre, SP - Brazil
Total Affiliations: 1
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| Document type: | Journal article |
| Source: | CrystEngComm; v. 21, n. 48, p. 7365-7372, DEC 28 2019. |
| Web of Science Citations: | 0 |
| Abstract | |
We observed an in situ decomposition-recrystallization process of CH3NH3PbI3 from cuboid (3D) to needle-shaped (1D) morphology induced by liquid water interactions. All the reversible processes from dry to increasing the relative humidity to water condensation and to dry again lasted for a few minutes and occurred at T = 1 degrees C. The water-induced crystallization process occurred slowly and at ambient conditions by dropping the solution on a substrate; subsequently, a very long monohydrate microwire having a 1D crystal structure was formed, which fully and quickly reversed to a 3D perovskite structure. The growth driving force in the droplet involved a meniscus moving from the outward direction to the inward direction in the droplet, which incorporated an 1D assembly of {[}PbI6](4-) octahedra intercalated with (CH3NH3 center dot H2O)(+) cations. (AU) | |
| FAPESP's process: | 18/14181-0 - Synthesis, characterization and computational simulation of hybrid APbX3 (a = CS and CH3NH3; X = i, CL e Br) perovskites |
| Grantee: | Ariany Bonadio |
| Support Opportunities: | Scholarships in Brazil - Doctorate (Direct) |
| FAPESP's process: | 17/02317-2 - Interfaces in materials: electronic, magnetic, structural and transport properties |
| Grantee: | Adalberto Fazzio |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 18/15682-3 - Synthesis and Physical Properties Characterization of Micro/Nanostructured Semiconducting Materials |
| Grantee: | José Antonio Souza |
| Support Opportunities: | Regular Research Grants |