Improvement from discrete to uniform wetting of organic perovskite on ferromagnetic metals through a heterointerface

Shi Yu Liu, Zih En Lin, Bing Tsun Wu, Ting Hao Chen, Hsuan Ching Hung, Chun Han Yin, Chun Tse Hsieh, Chak Ming Liu, Li Jie Liaw, Sheng Yu Hsu, Po Chun Chang, Yu Chiang Chao*, Wen Chin Lin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Considerable effort has been expended on the combination of a ferromagnetic layer with a perovskite film for application in light-controlled spintronic devices. However, to achieve such combinations, gaining control over the interface quality and the interaction between the ferromagnetic and perovskite layers is crucial. Studies have observed discrete distributions of organic perovskite (methylammonium lead bromide, MAPbBr3) films, which self-assemble into nanodiscs, on iron–palladium alloy films. To achieve uniform wetting, we proposed the insertion of an ultrathin heterointerface of an aluminum oxide or graphene layer between perovskite and metal films. Through atomic force microscopy and scanning electron microscopy, we observed that the derived MAPbBr3 coating successfully formed a continuous and dense layer without voids, with its roughness fluctuations being within a few nanometers. Magneto-optical Kerr effect measurement for material characterization revealed that the perovskite films had a negligible capping effect on magnetism. These results provide insight into the potential technological applications of perovskite/metal heterostructures.

Original languageEnglish
Article number154180
JournalApplied Surface Science
Publication statusPublished - 2022 Nov 1


  • AlO
  • Graphene
  • Perovskite

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces


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