Fabrication of carbon nanotube thin films on flexible substrates by spray deposition and transfer printing

We present two different processes for the deposition of high quality CNT films on flexible substrates. The first is a simple and low cost transfer printing process that transfers CNT films deposited on glass to a flexible substrate in few steps. The second is the utilization of a low cost spray process for the direct deposition of CNT films on flexible substrates. Both processes are reliable, reproducible and result in highly uniform CNT films which are comparable to the state-of-the-art CNT films fabricated on glass substrates. CNT films with 19 nm thickness and with an optical transmission up to 86% at a sheet resistance of 250 Ω/sq have been fabricated on flexible substrates.