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Tytuł:
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Polaron Masses in CH_{3}NH_{3}PbX_{3} Perovskites Determined by Landau Level Spectroscopy in Low Magnetic Fields.
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Autorzy:
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Yamada Y; Graduate School of Science, Chiba University, Inage, Chiba 263-8522, Japan.
Mino H; Graduate School of Global and Transdisciplinary Studies, Chiba University, Inage, Chiba 263-8522, Japan.
Kawahara T; Graduate School of Education, Chiba University, Inage, Chiba 263-8522, Japan.
Oto K; Graduate School of Science, Chiba University, Inage, Chiba 263-8522, Japan.
Suzuura H; Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan.
Kanemitsu Y; Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan.
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Źródło:
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Physical review letters [Phys Rev Lett] 2021 Jun 11; Vol. 126 (23), pp. 237401.
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Typ publikacji:
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Journal Article
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Język:
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English
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Imprint Name(s):
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Original Publication: New York : American Physical Society
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Entry Date(s):
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Date Created: 20210625 Latest Revision: 20210628
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Update Code:
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20240105
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DOI:
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10.1103/PhysRevLett.126.237401
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PMID:
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34170157
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We investigate the electron-phonon coupling in CH_{3}NH_{3}PbX_{3} lead halide perovskites through the observation of Landau levels and high-order excitons at weak magnetic fields, where the cyclotron energy is significantly smaller than the longitudinal optical phonon energy. The reduced masses of the carriers and the exciton binding energies obtained from these data are clearly influenced by polaron formation. We analyze the field-dependent polaronic and excitonic properties, and show that they can be quantitatively reproduced by the Fröhlich large polaron model.
