Morphology-selective preparation and formation mechanism of few-layer graphene on Cu substrate by liquid-phase pulsed laser ablation

Fuhui Ma,Wenxun Ma,Rihong Wang,Lei Qian,Xudong Ren

doi:10.1063/1.5111800

Abstract

This paper presented a morphology-selective preparation and formation mechanism of few-layer graphene (FLG) on a Cu substrate by pulsed laser ablation in liquid. It is a simple and controllable route to grow FLG directly on the surface of a copper foil at ambient temperature and normal pressure, which does not need other precursor materials. FLG with 3–10 layers of thickness and continuous hundreds of micrometers in lateral size is obtained. The morphology and structure of FLG were investigated by using a Raman spectrometer, scanning electron microscope, high-resolution transmission electron microscope, and atomic force microscope. The formation mechanism of FLG and the role of the plasma-produced carbon species are put forward based on the interaction between the laser, material, and substrate. Our finding, the direct deposition of FLG on the Cu substrate by pulsed laser ablation in liquid, will open a door to apply this green route to the production of FLG with controlled morphology.

Highlights

Graphene has attracted tremendous attention and continuous research because of its excellent electrical and optical properties that make it prospective for applications in the generation of energy conversion, electronic products, sensors, and biosensors.1,2 Several preparation methods, such as micromechanical exfoliation,3 hydrogen arc discharge,4 chemical exfoliation,5–7 and epitaxial growth8 on the substrate, have been employed to obtain graphene from graphite
We reported the formation of graphene nanoribbons from flake graphite by liquid-phase pulsed laser ablation (LPLA), which presented a unique way to synthesize two-dimensional carbon materials
We report a method for direct deposition of few-layer graphene (FLG) on the Cu foil using a nanosecond pulsed laser ablation experiment in de-ionized water

Summary

INTRODUCTION

Graphene has attracted tremendous attention and continuous research because of its excellent electrical and optical properties that make it prospective for applications in the generation of energy conversion, electronic products, sensors, and biosensors. Several preparation methods, such as micromechanical exfoliation, hydrogen arc discharge, chemical exfoliation, and epitaxial growth on the substrate, have been employed to obtain graphene from graphite. Graphene has attracted tremendous attention and continuous research because of its excellent electrical and optical properties that make it prospective for applications in the generation of energy conversion, electronic products, sensors, and biosensors.. Graphene has attracted tremendous attention and continuous research because of its excellent electrical and optical properties that make it prospective for applications in the generation of energy conversion, electronic products, sensors, and biosensors.1,2 Several preparation methods, such as micromechanical exfoliation, hydrogen arc discharge, chemical exfoliation, and epitaxial growth on the substrate, have been employed to obtain graphene from graphite. The liquid-phase pulsed laser ablation (LPLA) method has attracted more and more attention in preparation of carbon nanomaterials for its unique superiority.

EXPERIMENTAL DETAILS

RESULTS AND DISCUSSION

CONCLUSION