Publication:
Characterization and responsivity of graphene loaded zinc sulphide within visible light spectrum
Characterization and responsivity of graphene loaded zinc sulphide within visible light spectrum
No Thumbnail Available
Date
2019-04
Authors
Sabreen A. Khalaf
Iftikhar M. Ali
Journal Title
Journal ISSN
Volume Title
Publisher
Universiti Malaysia Perlis (UniMAP)
Research Projects
Organizational Units
Journal Issue
Abstract
In this study, the nanocrystal-ZnS-loaded graphene was synthesized by a facile co-precipitation route. The effect of graphene on the characterization of Zinc Sulphide (ZnS) was investigated. The X-ray Diffraction (XRD) results reveal that ZnS has cubic system while hexagonal structure which is observed by loading graphene during the preparation of ZnS. Energy Dispersive X-ray Spectroscopy (EDS) analysis proved the presence of all expected elements in the prepared materials. Nanosize of fabricated materials has been measured using Scanning Electron Microscopy (SEM) technique. This study also found that the graphene plays a critical role in lowering the optical energy gap of ZnS nanoparticles from 4 eV to 3.2 eV. The characterization of detector fabricated from these materials showed that the ZnS/graphene nanostructure exhibits colour tuneable to green region compared to bare ZnS which has responsivity at blue region, due to the addition of graphene.
Description
Keywords
ZnS,
Graphene,
Nanocrystals,
Composites,
Detectors