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Supplementary Materials

This PDF file includes:

  • Supplementary Materials and Methods
  • Fig. S1. Structural characterization of a MAPbCl3 single crystal.
  • Fig. S2. Incident angle dependence of the surface reflectivity for a p-polarized beam at 298 K.
  • Fig. S3. Temperature dependence of the refractive index of MAPbCl3 for various wavelengths.
  • Fig. S4. Contributions of the thermo-optic coefficient and the linear expansion coefficient to the total optical path-length change.
  • Fig. S5. Schematic of the Mach-Zehnder interferometer for measuring time-resolved phase shifts during photoexcitation.
  • Fig. S6. PL spectra under one- and two-photon excitation.
  • Fig. S7. Carrier density profile under two-photon excitation.
  • Fig. S8. Effective temperature rise during pump laser excitation.
  • Fig. S9. Comparison of the thermo-optic properties of MAPbCl3 and various materials.
  • Fig. S10. Excitation power dependence of PL under two-photon excitation.
  • Table S1. The list of thermo-optic coefficients and other constants of MAPbCl3 and other materials.
  • References (3251)

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