Liquid water-induced growth of the 1D morphology of CH3NH3PbI3 hybrid perovskites

Autor(es)

Bonadio, A. ^[1] ; de Oliveira, L. S. ^[1] ; Polo, A. S. ^[1] ; Souza, J. A. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed ABC, Santo Andre, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: CrystEngComm; v. 21, n. 48, p. 7365-7372, DEC 28 2019.
• Citações Web of Science: 0

Resumo

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)

• Processo FAPESP: 18/14181-0 - Síntese, caracterização e simulação computacional de perovskitas APbX3 (a = CS e CH3NH3; X = i, Cl e Br) híbridas
• Beneficiário: Ariany Bonadio
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto
• Processo FAPESP: 17/02317-2 - Interfaces em materiais: propriedades eletrônicas, magnéticas, estruturais e de transporte
• Beneficiário: Adalberto Fazzio
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 18/15682-3 - Síntese e caracterização das propriedades físicas de materiais semicondutores micro/nano estruturados
• Beneficiário: José Antonio Souza
• Modalidade de apoio: Auxílio à Pesquisa - Regular