Journal
PHYSICAL REVIEW LETTERS
Volume 126, Issue 23, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.126.237401
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Funding
- JST-CREST [JPMJCR16N3]
- JSPS KAKENHI [JP19K03683, JP19H05465, JP20K03798]
- Chiba Iodine Resource Innovation Center
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The study investigates the electron-phonon coupling in CH3NH3PbX3 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. The field-dependent polaronic and excitonic properties can be quantitatively reproduced by the Frohlich large polaron model.
We investigate the electron-phonon coupling in CH3NH3PbX3 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 Frohlich large polaron model.
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