Electronic structure of MAPbI(3) and MAPbCl(3): importance of band alignment

Since their first appearance, organic-inorganic perovskite absorbers have been capturing the attention of the scientific community. While high efficiency devices highlight the importance of band level alignment, very little is known on the origin of the strong n-doping character observed in the pero...

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Detalles Bibliográficos
Autores principales: Caputo, Marco, Cefarin, Nicola, Radivo, Andrea, Demitri, Nicola, Gigli, Lara, Plaisier, Jasper R., Panighel, Mirco, Di Santo, Giovanni, Moretti, Sacha, Giglia, Angelo, Polentarutti, Maurizio, De Angelis, Filippo, Mosconi, Edoardo, Umari, Paolo, Tormen, Massimo, Goldoni, Andrea
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6805902/
https://www.ncbi.nlm.nih.gov/pubmed/31641160
http://dx.doi.org/10.1038/s41598-019-50108-0
Descripción
Sumario:Since their first appearance, organic-inorganic perovskite absorbers have been capturing the attention of the scientific community. While high efficiency devices highlight the importance of band level alignment, very little is known on the origin of the strong n-doping character observed in the perovskite. Here, by means of a highly accurate photoemission study, we shed light on the energy alignment in perovskite-based devices. Our results suggest that the interaction with the substrate may be the driver for the observed doping in the perovskite samples.

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