The results of studies of UV irradiation on the bulk specimens of MWCNTs and SWCNTs are presented. It is shown that the short-term ultraviolet irradiation leads to partial functionalization of the CNTs with oxygen-containing functional groups. It is revealed that short-time UV irradiation induces a decrease in the resistivity of bulk CNT specimens. However, there is no direct correlation between the degree of fictionalization and the relative decrease in resistivity. It is shown that the decrease in resistivity can be caused both by reducing the contact resistance between individual tubes and by changing the conduction mechanisms of the tubes themselves.
Marinin, O. D., Ovsiienko, I. V., Len, T. A., Matzui, L. Y., Prylutskyy, Y. I., Naumova, D. D., & Ritter, U. (2019). The Effect of Ultraviolet Irradiation on the Electro-transport Properties of Carbon Nanotubes: Transport Properties of Ultraviolet Irradiated Carbon Nanotubes. In Springer Proceedings in Physics (Vol. 222, pp. 145–163). Springer Science and Business Media, LLC. https://doi.org/10.1007/978-3-030-17755-3_10