[11a-Z28-1~16] 17.1 Carbon nanotubes & other nanocarbon materials

[11a-Z28-4] Influence of Molecular Adsorption on Hall Effect Measurement of Single-Walled Carbon Nanotube Thin Films

〇(M1)Hiroki Date¹, Mika Nagatomo¹, Akari Kobayashi¹, Taiki Inoue¹, Takenori Fujii², Shigeo Maruyama¹, Shohei Chiashi¹ (1.Univ. of Tokyo, 2.CRC, Univ. of Tokyo)

Keywords:CNT thin films, Hall effect measurement, Molecular adsorption

In order to clarify the properties of adsorbed molecules and carriers of CNT thin film, we analyzed the electrical conduction properties of CNT thin films with different densities transferred on or suspended over the substrate. The resistance increases when the temperature is raised in a vacuum, and it is assumed that considering the activation energy the molecule desorbed is water molecule, and the magnetic field dependence of the Hall resistivity indicates that the carrier is a hole and that Hall resistivity changes nonlinearly with magnetic field.