Science Advances

Supplementary Materials

This PDF file includes:

  • Material selection
  • Absorption coefficient of Si
  • Thermal radiation spectra of n-doped Si rod-array emitters
  • fig. S1. Spectral irradiance of the sun air mass 1.5 global (AM1.5G) and blackbody radiation spectra integrated over a hemisphere at various temperatures.
  • fig. S2. Theoretical absorption coefficient of Si at various temperatures on a linear scale and a log-log scale.
  • fig. S3. Theoretical thermal radiation power density spectra of structurally identical Si rod-array emitters with different doping densities at 1400 K.
  • table S1. Doping density dependence of the energy utilization efficiency of structurally identical Si rod-array emitters.
  • References (27–30)

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