Electronic structure of MAPbI3 and MAPbCl3: importance of band alignment

Caputo, M.; Cefarin, N.; Radivo, A.; Demitri, N.; Gigli, L.; Plaisier, J. R.; Panighel, M.; Di Santo, G.; Moretti, S.; Giglia, A.; Polentarutti, M.; De Angelis, F.; Mosconi, E.; Umari, P.; Tormen, M.; Goldoni, A.

doi:10.1038/s41598-019-50108-0

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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Titolo:	Electronic structure of MAPbI3 and MAPbCl3: importance of band alignment
Autori:	Caputo M. Cefarin N. Radivo A. Demitri N. Gigli L. Plaisier J. R. Panighel M. Di Santo G. Moretti S. Giglia A. Polentarutti M. DE ANGELIS, Filippo MOSCONI, EDOARDO Umari P. Tormen M. Goldoni A. mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2019
Rivista:	SCIENTIFIC REPORTS
Abstract:	Since their first appearance, organic-inorganic perovskite absorbers have been capturing the atte...ntion 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.
Handle:	http://hdl.handle.net/11391/1459937
Appare nelle tipologie:	1.1 Articolo in rivista

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