Transport Properties of Charge Carriers in Single-Walled Carbon Nanotubes by Flash-Photolysis Time-Resolved Microwave Conductivity Technique

Abstract

Transport properties of charge carriers in single‐walled carbon nanotubes (SWNTs) were investigated by flash‐photolysis time‐resolved microwave conductivity (FP‐TRMC) technique. With this technique, it is possible to monitor the change in conductivity on pulsed laser excitation on a nanosecond timescale, without contacting layer with electrode. The FP‐TRMC signals obtained by SWNT sample is drastically larger than that of only catalyst. The dependence of excitation wavelength on φΣμ, which is a product of a quantum yield and sum of mobility, was obtained, indicating variety in transport property of size‐distributed SWNTs.