First Experimental Evidence of Amorphous Tin Oxide Formation in Lead-Free Perovskites by Spectroscopic Ellipsometry
Impacto
Scholar |
Otros documentos de la autoría: Mannino, Giovanni; Sanchez-Diaz, Jesus; Smecca, Emanuele; Valastro, Salvatore; Deretzis, Ioannis; S. Sánchez, Rafael; MARTINEZ PASTOR, JUAN CARLOS; Mora-Sero, Ivan; ALBERTI, ALESSANDRA
Metadatos
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INVESTIGACIONMetadatos
Título
First Experimental Evidence of Amorphous Tin Oxide Formation in Lead-Free Perovskites by Spectroscopic EllipsometryAutoría
Fecha de publicación
2023Editor
WileyISSN
2367-198XCita bibliográfica
MANNINO, Giovanni, et al. First Experimental Evidence of Amorphous Tin Oxide Formation in Lead‐free Perovskites by Spectroscopic Ellipsometry. Solar RRL, 2023.Tipo de documento
info:eu-repo/semantics/articleVersión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
The most promising lead-free options for producing perovskite solar cells are tin halide perovskite materials. Herein, while in situ monitoring the optical evolution of the material in humid air, spectroscopic ellip ... [+]
The most promising lead-free options for producing perovskite solar cells are tin halide perovskite materials. Herein, while in situ monitoring the optical evolution of the material in humid air, spectroscopic ellipsometry is used to investigate the dielectric function of FASnI3 layers (with and without additives) within the range of 1–5 eV. According to calculations based on the density functional theory that shows oxygen diffusion on FASnI3 surfaces, the steady decrease in absorption coefficient in the band gap region (1.47 eV) and simultaneous increase in absorption in the 3–4.5 eV region suggest the production of amorphous tin oxide. Concurrently, X-ray diffraction reveals a clear degradation of FASnI3. With the addition of sodium borohydride and dipropylammonium iodide, the optically active area of about 1.47 eV is preserved for a longer period while SnO2 production is prevented. Last but not least, FASnI3's stability is investigated in dry N2 environment and shown that it is optically durable for thermal operations up to 100 °C, particularly when additives are used. [-]
Publicado en
Solar RRL, 2023.Entidad financiadora
Italian Ministry of Ecological Transition | ENEA, Italian National Agency for New Technologies, Energy and Sustainable Economic Development | European Comission
Código del proyecto o subvención
21A03302 GU n.133 del 5-6-2021 | CUP B82C21001820001 | info:eu-repo/grantAgreement/EC/H2020/862656
Derechos de acceso
info:eu-repo/semantics/openAccess
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