Science Advances

Supplementary Materials

The PDF file includes:

  • Supplementary Text
  • Fig. S1. XRD of pure S and Se.
  • Fig. S2. Influence of concentration in S-Se alloy synthesis.
  • Fig. S3. SEM micrographs of S-Se alloys synthesized at different temperatures and concentrations.
  • Fig. S4. Detailed SEM analysis of equimolar concentration of S-Se alloys.
  • Fig. S5. TGA of S-Se powder.
  • Fig. S6. EELS on S-Se alloy.
  • Fig. S7. Polycrystalline diffraction on S-Se alloy.
  • Fig. S8. Deconvolved diffraction patterns and the corresponding maps of different grains obtained via nanodiffraction imaging for four, five, and six output components.
  • Fig. S9. Nanodiffraction grain mapping of S-Se alloy.
  • Fig. S10. HRTEM analysis for the S-Se material with its respective FFT and d-spacing.
  • Fig. S11. Chemical nature of the polarity between Se8 and S8 in the transverse orientation.
  • Fig. S12. Structural characterization and mechanical properties of equal weight concentration of S-Se alloys.
  • Fig. S13. Mechanical behavior of S-Se alloy.
  • Fig. S14. Dielectric properties of equimolar S-Se alloys.
  • Fig. S15. Dielectric breakdown of equimolar S-Se alloy.
  • Fig. S16. Optical properties of equimolar S-Se alloys.
  • Fig. S17. In situ pressure-dependent Raman tests performed on equimolar S-Se alloys.
  • Fig. S18. Electrochemical properties of equimolar concentrations of S-Se alloys.
  • Fig. S19. Equivalent circuit used in impedance measurements and in estimating the dielectric constant of S-Se alloy.
  • Table S1. d-spacings of the various polycrystalline rings indicated in the SAD pattern of S-Se alloys.
  • Table S2. Composition of S and Se as determined by XPS spectra.
  • Table S3. ΔH, HOMO-LUMO gap (ΔEHOMO-LUMO), equilibrium constant (K = e–ΔH/RT with T = 673.15 K), and frequencies for highest IR and Raman peaks for reactions in the first column in their adjacent, layered, and transverse orientations.
  • Table S4. Dielectric constant at different thicknesses of S-Se alloy.
  • Legends for movies S1 to S4
  • Reference (35)

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Other Supplementary Material for this manuscript includes the following:

  • Movie S1 (.mp4 format). Mechanical video showing the compression of S-Se alloys taken in equimolar ratio.
  • Movie S2 (.mp4 format). Mechanical video showing the compression of S-Se alloy taken in equal weight.
  • Movie S3 (.mp4 format). Mechanical video showing the compression of pure S.
  • Movie S4 (.mp4 format). Mechanical video showing the compression of pure S.

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