Seebeck Coefficient of the Chlorosulfonic Acid Doped Carbon Nanotube Fiber with Two Junctions

In this paper, for the first time, we report the Seebeck coefficient measurement result of the HSO3Cl doped carbon nanotube (CNT) fiber with two junctions. The HSO3Cl doped CNT fiber is a promising candidate of a thermoelectric power generation material. Especially, it can be applicable when the distance between two points giving temperature difference is long because the length of CNT fiber from the view point of fabrication has no limitation. To confirm the thermoelectric characteristic of CNT fiber, we fabricated the HSO3Cl doped CNT fiber with two junctions consisting of p
⁺
-p
^-
-p
⁺
. Moreover, we built up a measurement setup and conducted Seebeck coefficient measurement. As a result, we obtained the Seebeck coefficient of -1.45 µV/K for the HSO3Cl doped CNT fiber.