Science Advances

Supplementary Materials

This PDF file includes:

  • Fig. S1. Typical optical images of MoS2 and Mo5N6 flakes with different thicknesses.
  • Fig. S2. Absorption spectra of MoS2 and Mo5N6 samples on quartz substrate.
  • Fig. S3. AFM images of MoS2 and Mo5N6 flakes in Fig. 2.
  • Fig. S4. PL intensity maps of MoS2 and Mo5N6 flake.
  • Fig. S5. Structural and elemental characterizations of Mo5N6.
  • Fig. S6. TEM images of Mo5N6 sample under 200-keV electron beam.
  • Fig. S7. EDS spectrum of Mo5N6.
  • Fig. S8. Optical, AFM, and SEM images of chemical transformation on a four-layer MoS2 flake.
  • Fig. S9. Optical images of Mo5N6 flakes prepared from chemical transformations under different conditions.
  • Fig. S10. Optical images and Raman spectra of a partially converted flake at 700°C.
  • Fig. S11. Stability test of Mo5N6, W5N6, and TiN.
  • Fig. S12. Optical and SEM images of WS2, W5N6, TiS2, and TiN flakes.
  • Fig. S13. Optical and AFM images of Mo5N6 transport device.
  • Fig. S14. TEM and EDS characterizations of W5N6 converted from WS2.

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