Science Advances

Supplementary Materials

This PDF file includes:

  • Fig. S1. Comparison between the Gibbs free energies of WO3, WO2.9, and WO2.72 in a temperature range of 300 to 900 K.
  • Fig. S2. The possible crystal structures and the corresponding TDOS distributions of WO2.9.
  • Fig. S3. TA measurements on WO3 with pump photon energies of 3.1 and 1.55 eV and the corresponding alignments with the calculated TDOS distributions.
  • Fig. S4. TA spectra at different time delays for measurements on WO2.9.
  • Fig. S5. TA dynamics measured on WO2.9 at 1.51 and 1.6 eV for pumping at 3.1 eV.
  • Fig. S6. Pump fluence dependence of the TA dynamics measured on WO2.9 using a pump at 1.55 eV.
  • Fig. S7. Comparison between the TA spectra of WO2.72 (at a delay of 0.4 ps) and WO2.9 (at delays of 0.25 and 0.4 ps).
  • Fig. S8. TA dynamics measured for WO2.72 at 1.50 and 1.61 eV and WO2.9 at 1.50 eV.
  • Fig. S9. Diagrammatic summary of the logic relationships between different sections.
  • Table S1. The calculated formation energies of WO2.72 corresponding to the four kinds of configurations with different distributions of oxygen vacancies.
  • Table S2. Bond length and bond population for chemical bonds of WO3, WO2.9, and WO2.72.

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