Temperature-dependent evolution of Raman spectra of methylammonium lead halide perovskites, CH 3 NH 3 PbX 3 (X = I, Br)

Kousuke Nakada, Yuki Matsumoto, Yukihiro Shimoi, Koji Yamada, Yukio Furukawa

    Research output: Contribution to journalArticle

    2 Citations (Scopus)

    Abstract

    We present a Raman study on the phase transitions of organic/inorganic hybrid perovskite materials, CH 3 NH 3 PbX 3 (X = I, Br), which are used as solar cells with high power conversion efficiency. The temperature dependence of the Raman bands of CH 3 NH 3 PbX 3 (X = I, Br) was measured in the temperature ranges of 290 to 100 K for CH 3 NH 3 PbBr 3 and 340 to 110 K for CH 3 NH 3 PbI 3 . Broad ν 1 bands at ~326 cm 1 for MAPbBr 3 and at ~240 cm 1 for MAPbI 3 were assigned to the MA–PbX 3 cage vibrations. These bands exhibited anomalous temperature dependence, which was attributable to motional narrowing originating from fast changes between the orientational states of CH 3 NH 3 + in the cage. Phase transitions were characterized by changes in the bandwidths and peak positions of the MA–cage vibration and some bands associated with the NH 3 + group.

    Original languageEnglish
    Article number626
    JournalMolecules
    Volume24
    Issue number3
    DOIs
    Publication statusPublished - 2019 Feb 11

    Fingerprint

    perovskites
    halides
    Raman scattering
    Phase Transition
    methylidyne
    Raman spectra
    Vibration
    Temperature
    Phase transitions
    Conversion efficiency
    temperature
    Solar cells
    vibration
    temperature dependence
    Bandwidth
    solar cells
    methylamine
    bandwidth

    Keywords

    • Bandwidth
    • Methylammonium lead halide perovskites
    • Motional narrowing
    • Organic/inorganic hybrid perovskites
    • Phase transition
    • Raman spectroscopy

    ASJC Scopus subject areas

    • Analytical Chemistry
    • Chemistry (miscellaneous)
    • Molecular Medicine
    • Pharmaceutical Science
    • Drug Discovery
    • Physical and Theoretical Chemistry
    • Organic Chemistry

    Cite this

    Temperature-dependent evolution of Raman spectra of methylammonium lead halide perovskites, CH 3 NH 3 PbX 3 (X = I, Br) . / Nakada, Kousuke; Matsumoto, Yuki; Shimoi, Yukihiro; Yamada, Koji; Furukawa, Yukio.

    In: Molecules, Vol. 24, No. 3, 626, 11.02.2019.

    Research output: Contribution to journalArticle

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    AU - Nakada, Kousuke

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    AU - Shimoi, Yukihiro

    AU - Yamada, Koji

    AU - Furukawa, Yukio

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