Study of an ideal hybrid perovskite --- gold interface by the stationary Green's operator method
Alekseyev N. I. 1,2, Alyoshin A. N.1, Oreshko I. V. 1,2
1Ioffe Institute, St. Petersburg, Russia
2St. Petersburg State Electrotechnical University “LETI", St. Petersburg, Russia
Email: NIAlekseyev@yandex.ru
The study examines the hybrid interface between MAPbX3 type halide perovskite and gold - one of the electrode materials that are considered as the best possible. The interface is recognized as an ideal one that forms a superlattice, which is partly implemented in the known literature. Investigation carried out by the stationary Green's operator method shows that gold levels above the Fermi energy form surface states, to which metal electrons can move (metal-induced states), in the perovskite band gap. Together with the intense electromigration of halogen ions in hybrid perovskites, such movement provides an effective current transport channel in perovskite cells. Keywords: hybrid perovskites, metalorganic perovskites, organic-inorganic interface,Green's operator method.
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