Electronic structure of MAPbI3 and MAPbCl3: importance of band alignment

[en] 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.

Disciplines :

Physics

Author, co-author :

Caputo, M.

Cefarin, N.

Radivo, A.

Demitri, N.

Gigli, L.

Plaisier, J.R.

PANIGHEL, Mirco ; UNITS - University of Trieste > Physics Department, via Valerio 2, 34100 Trieste, Italy

Di Santo, G.

Moretti, S.

Giglia, A.

More authors (6 more)

External co-authors :

yes

Language :

English

Title :

Electronic structure of MAPbI3 and MAPbCl3: importance of band alignment

Publication date :

22 October 2019

Journal title :

Scientific Reports

eISSN :

2045-2322

Volume :

Issue :

Pages :

15159

Peer reviewed :

Peer Reviewed verified by ORBi

Additional URL :

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85073720150&doi=10.1038%2fs41598-019-50108-0&partnerID=40&md5=5fe07ba3006a6d846b555043efd32b0d

Funding text :

A.G. thanks MIUR support within the FIRB “Nanosolar” (RBAP11C58Y) and “Advanced Nanotechnologies For Multivariate Sensor Fabrication” by NATO Emerging Security Challenges Division. Measurements on BEAR beamline in Elettra have been performed under the proposal No. 20140068.

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since 19 May 2025

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