Fluoride Chemistry in Tin Halide Perovskites
Impacto
Scholar |
Otros documentos de la autoría: Pascual, Jorge; Flatken, Marion Alwine; Felix, Roberto; Li, Guixiang; Turren Cruz, Silver Hamill; Aldamasy, Mamoud Hussein; Hartmann, Claudia; Li, Meng; Di Girolamo, Diego; Nasti, Giuseppe; Hüsam, Elif; Wilks, Regan; Dallmann, Andre; Bär, Marcus; Hoell, Armin; Abate, Antonio
Metadatos
Mostrar el registro completo del ítemcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/160292
comunitat-uji-handle3:10234/160293
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INVESTIGACIONMetadatos
Título
Fluoride Chemistry in Tin Halide PerovskitesAutoría
Fecha de publicación
2021-09-20Editor
WileyISSN
0044-8249; 1521-3757Cita bibliográfica
J. Pascual, M. Flatken, R. Félix, G. Li, S.-H. Turren-Cruz, M. H. Aldamasy, C. Hartmann, M. Li, D. Di Girolamo, G. Nasti, E. Hüsam, R. G. Wilks, A. Dallmann, M. Bär, A. Hoell, A. Abate, Angew. Chem. Int. Ed. 2021, 60, 21583.Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
https://onlinelibrary.wiley.com/doi/full/10.1002/anie.202107599Versión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
Tin is the frontrunner for substituting toxic lead in perovskite solar cells. However, tin suffers the detrimental oxidation of SnII to SnIV. Most of reported strategies employ SnF2 in the perovskite precursor solution ... [+]
Tin is the frontrunner for substituting toxic lead in perovskite solar cells. However, tin suffers the detrimental oxidation of SnII to SnIV. Most of reported strategies employ SnF2 in the perovskite precursor solution to prevent SnIV formation. Nevertheless, the working mechanism of this additive remains debated. To further elucidate it, we investigate the fluoride chemistry in tin halide perovskites by complementary analytical tools. NMR analysis of the precursor solution discloses a strong preferential affinity of fluoride anions for SnIV over SnII, selectively complexing it as SnF4. Hard X-ray photoelectron spectroscopy on films shows the lower tendency of SnF4 than SnI4 to get included in the perovskite structure, hence preventing the inclusion of SnIV in the film. Finally, small-angle X-ray scattering reveals the strong influence of fluoride on the colloidal chemistry of precursor dispersions, directly affecting perovskite crystallization. [-]
Publicado en
Angewandte Chemie International Edition, 2021, vol. 60, no 39Entidad financiadora
China Scholarship Council (CSC)
Código del proyecto o subvención
201906150131
Derechos de acceso
info:eu-repo/semantics/openAccess
Aparece en las colecciones
- INAM_Articles [521]