Electronic properties control of single-walled carbon nanotube using spontaneous redox process of MnO_4~- and carbon nanotube

摘要

Single-walled carbon nanotube (SWCNT) thin film is three dimensional interconnected networks of quantum wires and a large number of factors can affect their optical and electrical properties. In order to obtain the low sheet resistance of SWCNT thin film that has the high transmittance at 550 nm, electronic properties of SWCNTs film are modified through chemical treatment and enhanced carrier injection. We investigated the effectiveness of electronic properties with single-walled carbon nanotube through spontaneous redox-reaction between the metal oxide ion such as MnO_4~- and carbon nanotube. The sheet resistance of SWCNTs film decorated with MnO_2 has lower than that of as-prepared SWCNTs film due to the reduction of MnO_2 particle on the surface of SWCNT. The effect of doping on electronic structure of SWCNTs was investigated by four point probe (FPP), Raman spectroscopy, and UV vis-NIR absorption spectrometer.