Influence of size and morphology on the optical properties of carbon nanostructures

Hajar Sadeghi,Davoud Dorranian

doi:10.1007/s40094-015-0194-4

Abstract

Optical properties of carbon nanostructures produced by laser ablation method in different liquid environments have been studied experimentally. In this work we used a 7 ns fundamental wavelength of pulsed Nd:YAG laser at 1064 nm and 10 Hz repetition rate to produce carbon nanostructures including graphene in distilled water, acetone, alcohol, and CTAB. Structure and morphology of carbon nanostructures were studied using their UV–Vis-NIR spectrum, TEM images, and Raman scattering spectrum. Results show that in our experimental condition distilled water was the most capable medium for producing graphene. Color of suspensions varied with the amount of carbon nanoparticles in the suspension while the bandgap energy of samples decreases with increasing the amount of graphene.

Highlights

A wide range of electronic properties of carbon from insulating/semiconducting diamond to metal-like graphite, nanotubes and graphene sheets yields many technological applications in different areas of human activity [1]
Optical properties of carbon nanostructures produced by laser ablation method in different liquid environments have been studied experimentally
We have investigated the optical effects due to the presence of graphene in the liquid suspension of different carbon nanostructures

Summary

Introduction

A wide range of electronic properties of carbon from insulating/semiconducting diamond to metal-like graphite, nanotubes and graphene sheets yields many technological applications in different areas of human activity [1]. Abstract Optical properties of carbon nanostructures produced by laser ablation method in different liquid environments have been studied experimentally. In this work we used a 7 ns fundamental wavelength of pulsed Nd:YAG laser at 1064 nm and 10 Hz repetition rate to produce carbon nanostructures including graphene in distilled water, acetone, alcohol, and CTAB. Color of suspensions varied with the amount of carbon nanoparticles in the suspension while the bandgap energy of samples decreases with increasing the amount of graphene.

Results

Conclusion