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ABSTRACT:
SUBMITTER: Debnath T
PROVIDER: S-EPMC8113605 | biostudies-literature | 2021 May
REPOSITORIES: biostudies-literature
Debnath Tushar T Sarker Debalaya D Huang He H Han Zhong-Kang ZK Dey Amrita A Polavarapu Lakshminarayana L Levchenko Sergey V SV Feldmann Jochen J
Nature communications 20210511 1
The halide ions of organic-inorganic hybrid perovskites can strongly influence the interaction between the central organic moiety and the inorganic metal halide octahedral units and thus their lattice vibrations. Here, we report the halide-ion-dependent vibrational coherences in formamidinium lead halide (FAPbX<sub>3</sub>, X = Br, I) perovskite nanocrystals (PNCs) via the combination of femtosecond pump-probe spectroscopy and density functional theory calculations. We find that the FAPbX<sub>3< ...[more]