Characterization of Graphenic Carbon Produced by Pulsed Laser Ablation of Sacrificial Carbon Tapes

Abstract

This paper reports on the pulsed laser deposition of nanocarbon films on metal and dielectric substrates, using high-purity sacrificial carbon tape as a carbon source on a neutral gas background. The films were characterized by X-ray diffraction (XRD), photoelectron (XPS) and Raman spectroscopy. The XRD and Raman structural analyses revealed that the synthesized films have a graphenic nanocrystalline turbostratic structure, with sp2 clusters about 15–18 nm in size, depending on the laser fluence. A significant decrease in the oxygen and hydrogen contents in the films, in comparison with the target material, was established using XPS, as well as a significant decrease in the sp3 carbon content. The deposited films were found to be similar to reduced graphene oxide (rGO) in composition, with a surprisingly low number of defects in the sp2-matrix. The method proposed in the work may have good prospects of application in the production of energy storage and nonvolatile memory devices.

Pulsed Laser Deposition of Carbon-Based Materials: A Focused Review of Methods and Results

“…The possible existence of a laser energy threshold is also suggested by the work of Ershov et al [151,152], which showed that increasing the energy density of a 20 ns Nd:YAG laser caused an increase in defects and the formation of smaller sp 2 crystallites in graphenic films deposited on metallic and metal-oxide substrates. These works, unlike most other examples of PLD of graphene and graphene-like materials, were not carried out in vacuum or a reduced pressure atmosphere, but in He at atmospheric pressure, and by using a sacrificial nanocarbon tape as the target rather than graphite.…”

“…The first attempts at the growth of graphene films were made with the fundamental and second harmonic of nanosecond Nd:YAG lasers (respectively, 1064 nm and 532 nm) [121,122,149,150], and several recent works have also employed them [134,135,151,152].…”

Styrene–butadiene–styrene-based stretchable electrospun nanofibers by carbon nanotube inclusion

“…The main peaks of C1s at 284.4 and 285.2 eV are attributed to the sp 2 and sp 3 carbon of CC bonding, in addition to pi–pi* and C–O bonds. 79,80…”

“…The main peaks of C1s at 284.4 and 285.2 eV are attributed to the sp 2 and sp 3 carbon of CC bonding, in addition to pi-pi* and C-O bonds. 79,80 Fig. 10 shows the possible molecular interactions between the polymer blend and CNTs.…”