Mechanism of surface treatments on carbon nanotube transparent conductive films by three different reagents

Abstract

Comparative studies of sheet resistance and transmittance of CNT-TCFs treated by three different reagents were performed. The mechanism of an oxidation effect for removal of SDBS in CNT-TCFs by nitric acid was suggested.

Tannic Acid Modified Single‐Walled Carbon Nanotube/Zinc Oxide Nanoparticle Thin Films for UV/Visible Semitransparent Photodiode‐Type Photodetectors

“…In the process of CNT TCFs preparation, relying only on TA and dispersing CNTs to prepare the ink cannot achieve the ideal degree of uniform dispersion and thus introduce SDBS. SDBS is an excellent dispersant for CNTs in an aqueous solution, but it has a side effect on the junction resistance of CNTs after CNT film formation(T>80 %, Rs>600 Ω/sq) [32,33] . SDBS needs to be removed with nitric acid to enhance the performance of TCFs (T>80 %, Rs<100 Ω/sq).…”

“…SDBS is an excellent dispersant for CNTs in an aqueous solution, but it has a side effect on the junction resistance of CNTs after CNT film formation(T > 80 %, Rs > 600 Ω/sq). [32,33] SDBS needs to be removed with nitric acid to enhance the performance of TCFs (T > 80 %, Rs < 100 Ω/sq). In addition, nitric acid can be used for p-type doping to increase the metal abundance of CNTs, and enhance the conductivity of CNT TCFs.…”