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説明:

Understanding the quantum transport properties of (Two-dimensional) 2D perovskite heterostructures is key to interpreting their electronic performance and promoting optoelectronic devices. Here, it is shown that clear Shubnikov-de Hass oscillation appears in the heterostructure of monocrystalline 2D perovskites and graphene, thanks to the clean interface. An efficient charge transfer between perovskite nanosheets and graphene is found, facilitating the separation of electrons and holes at the interface. The relation between the charge transfer efficiency and microscopic interface structures is quantitatively described. The evidence of photo-assisted transport from the photo-response of magnetoresistance is revealed, which happens between Landau levels of two graphene layers mediated by hot carriers in the perovskite layer, overcoming the barrier from the organic layers in the Ruddlesden-Popper perovskite phase. These results provide a picture to understand the transport behavior of 2D perovskite/graphene heterostructure and a reference for the controlled design of interfaces in perovskite optoelectronic devices.

権利情報:

• Creative Commons BY Attribution 4.0 International
  

キーワード: perovskite/graphene heterostructures, quantum transport, photo-assisted transport

刊行年月日: 2024-09-03

出版者: Wiley

掲載誌:

• Advanced Electronic Materials (ISSN: 2199160X) vol. 10 issue. 11 2400211

研究助成金:

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1002/aelm.202400211

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更新時刻: 2026-02-16 16:30:13 +0900

MDRでの公開時刻: 2026-02-16 13:57:34 +0900