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    • Optical properties of PbI-based perovskite structures

    DOI Web Site Web Site 被引用文献15件

    書誌事項

    公開日
    1994-04
    権利情報
    • https://www.elsevier.com/tdm/userlicense/1.0/
    DOI
    • 10.1016/0022-2313(94)90145-7
    公開者
    Elsevier BV

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    説明

    Abstract Remarkable enhancement of the excitonic binding energy and oscillator strength is demonstrated in PbI-based layered perovskite compounds where quantum well layers of corner sharing PbI6 octahedra are sandwiched by alkylammonium barrier layers with a much smaller dielectric constant. The enhancement is quantitatively explained by the image charge effect. By changing the dimensionality of PbI6 networks, we observe a change in the exciton formation energy from 1.633 eV for three-dimensional networks to 342 eV for zero-dimensional isolated octahedra. This change is mainly ascribed to the quantum confinement effect.

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