Layer-by-layer engineering of two-dimensional perovskite nanosheets for tailored microwave dielectrics

Muhammad Shuaib Khan, Hyung Jun Kim, Takaaki Taniguchi, Yasuo Ebina, Takayoshi Sasaki, Minoru Osada

    Research output: Contribution to journalArticlepeer-review

    11 Citations (Scopus)


    We report an approach for constructing ultrathin microwave dielectrics using two-dimensional (2D) perovskite nanosheets (Ca2Nb3O10). The solution-based layer-by-layer assembly of Ca2Nb3O10 nanosheets enables the tailoring of dielectric responses and breakdown voltage in order to realize miniaturized capacitors with improved performances. Multilayer stacked nanosheet films showed a stable dielectric response of up to 10 GHz; the dielectric constant of >200 is the highest among high-κ perovskites in the ultrathin region (<30 nm). Moreover, the nanosheet films realized a high capacitance density (>20 μF/cm2) with a robust thermal stability up to 250 °C. These superior dielectric properties of perovskite nanosheets offer a new solution for high-performance microwave devices.

    Original languageEnglish
    Article number091501
    JournalApplied Physics Express
    Issue number9
    Publication statusPublished - 2017 Sept 1

    ASJC Scopus subject areas

    • Engineering(all)
    • Physics and Astronomy(all)


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