Thermoelectric characteristics of the p-type (Bi, Sb)2Te3 nanocomposites processed with silicon nanodispersion.
The p-type (Bi0.2Sb0.8)2Te3 powders were mechanically alloyed and hot pressed at 500 degrees C for 30 minutes with dispersion of Si nanopowders up to 3 vol%. The thermal conductivity of the (Bi0.2Sb0.8)2Te3 nanocomposite was substantially reduced with dispersion of 0.3-3 vol% Si nanopowders due to the enhanced phonon scattering. The maximum dimensionless figure-of-merit of 1.32 at 75 degrees C was obtained for the (Bi0.2Sb0.8)2Te3 nanocomposite dispersed with 1 vol% Si nanopowders, compared to 1.08 of the specimen without Si nanopowder dispersion.
M Y
MY
Kim
B K
BK
Yu
J Y
JY
Choi
T S
TS
Oh
D000497:Alloys / Q000737:chemistry*; D000965:Antimony / Q000737:chemistry*; D001729:Bismuth / Q000737:chemistry*; D004553:Electric Conductivity; D055595:Mechanical Phenomena; D053761:Nanocomposites / Q000737:chemistry*; D012825:Silicon / Q000737:chemistry*; D013691:Tellurium / Q000737:chemistry*; D013696:Temperature
D000497:Alloys; D000965:Antimony; D013691:Tellurium; D001729:Bismuth; D012825:Silicon