Improving carbon nanotube transparent conductor performance by UV laser irradiation
Katie Hurst, Jeffrey Blackburn, Larsen A. Brian, John H. Lehman
We discuss the photochemical treatment of transparent conducting (TC) films made from single-walled carbon nanotubes (SWCNTs).(1) The treatment process is comparable to that described previously, whereby unwanted amorphous carbon is removed from bulk SWCNTs by exposure to a 248 nm excimer laser.(2) Here we demonstrate the removal of unwanted amorphous carbon and residual surfactant that adversely effect the conductivity and transmittance of the SWCNT TCs. The treatment results in a substantial increase in conductivity of the films that is necessary for their incorporation into devices such as photovoltaics. Our results are compared to the effect of thermal oxidation of similar TC films. Changes in the optical and electrical behavior of the TC are characterized by visible and near infrared spectroscopy, four-point probe and Raman spectroscopy. (1) Tenent, R.C. Barnes. T.M., Bergeson, J.D., Ferguson, A.J., To, B. Gedvilas, L.M., Heben, M.J., Blackburn, J.L. Adv. Mater. 3210 2009 (1) K. E. Hurst, A. C. Dillon, S. Yang, and J. H. Lehman J. Phys. Chem. C. 16296-16300 (112) 2008.
, Blackburn, J.
, Brian, L.
and Lehman, J.
Improving carbon nanotube transparent conductor performance by UV laser irradiation, MRS 2010 Spring Meeting, San Fransisco, CA
(Accessed November 29, 2023)