Thermal Property of Carbon Nanotube Fibers from Chemical Vapor Deposition Synthesis

Abstract

Because of facile synthesis, carbon nanotube (CNT) fibers from chemical vapor deposition can be used for diverse applications. In this study, the electrical property of CNT fibers was investigated. The room-temperature electrical conductivity of a typical CNT fiber was measured to be 5 × 105 S/m. The electrical-conductivity transport mechanism of CNT fibers was elucidated according to the temperature dependence of the resistance, indicating that the Mott’s variable-range hopping mechanism operates Moreover, the thermoelectric power was measured, indicating that the carrier within the fiber is a hole.