The Raman Spectrum of the CH3NH3PbI3 Hybrid Perovskite: Interplay of Theory and Experiment.

  title={The Raman Spectrum of the CH3NH3PbI3 Hybrid Perovskite: Interplay of Theory and Experiment.},
  author={Claudio Quarti and Giulia Grancini and Edoardo Mosconi and Paola Bruno and J. T. M. Baines c A. H. Ball and Michael M. Lee and Henry J Snaith and Annamaria Petrozza and Filippo De Angelis},
  journal={The journal of physical chemistry letters},
  volume={5 2},
We report the low-frequency resonant Raman spectrum of methylammonium lead-iodide, a prototypical perovskite for solar cells applications, on mesoporous Al2O3. The measured spectrum assignment is assisted by DFT simulations of the Raman spectra of suitable periodic and model systems. The bands at 62 and 94 cm(-1) are assigned respectively to the bending and to the stretching of the Pb-I bonds, and are thus diagnostic modes of the inorganic cage. We also assign the librations of the organic… CONTINUE READING
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