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Table 1 Enhancement of ZT in ZnO and Si NW

From: Determining factors of thermoelectric properties of semiconductor nanowires

  NW diameter (Å)
  ZnO Si
  8 10 17 12
ζ = ZT*/ZT*bulk 31.5 18.9 8.17 20.5
ζ e = ZT*(κ l bulk)/ZT*bulk 3.25 2.15 1.15 0.264
ζ l = ζ/ζ e 9.69 8.79 7.10 77.7
  1. ζ = ZT*/ZT*bulk is the ratio of the maximum ZT of NW to maximum ZT of bulk ZnO. ζ e and ζ l are electronic and lattice contribution to ζ.