Improved Thermoelectric Behavior of Super-Growth Carbon Nanotube Using Tetrathiafulvalene-Tetracyanoquinodimethane Nanoparticles

摘要

The addition of inorganic materials with high thermoelectric properties is a popular approach to modulate the performance of carbon nanotube (CNT), but, the representative hybridization of CNT and toxic Te or Bi is not practical considering safety. Here, we report a CNT film including charge-transfer complex nanoparticles, which has higher generality and thermoelectric properties. Interestingly, the CNT film containing 30 wt% Tetrathiafulvalene-tetracyanoquinodimethane (TTF-TCNQ) nanoparticle exhibited a higher in-plane thermoelectric power factor (44.3 μW m~(-1) K~(-2)) than the pure CNT (10.1 μW m~(-1) K~(-2)), which is the first result of a nanostructured charge-transfer complex acting as a carrier promoter.