Pulsed laser deposition of nanostructured MgO film: effect of laser fluence on the structural and optical properties

Content Provider	Scilit
Author	Ismail, Raid A. Mousa, Ali M. Shaker, Suaad S.
Copyright Year	2019
Description	Journal: Materials Research Express We report the preparation of nanostructured MgO films by pulsed laser deposition technique at a substrate temperature of 100°C. The effect of laser fluence on the structural, morphological and optical properties of MgO nanostructure was studied. XRD results show the MgO thin films were polycrystalline in nature with cubic structure. The film thickness of film increases as laser fluence increase. The direct optical energy gap of MgO films was in the range of (4.6-5.2) eV depending on laser fluence. The values of measured penetration depth as a function of laser fluence are well matched with the calculated values. The root mean square of surface roughness of the film increases with increase the laser fluence. The SEM investigation confirms that particle size of deposited MgO was in the range of (8.4-30.5) nm and the density and size of droplets and particulates was found to be increased with laser fluence. The particle size distribution was strongly dependent on the laser fluence. The EDX analysis shows that the grown MgO film shows the presence of peaks related to magnesium and oxygen elements and the sample prepared at 4.3J/cm2 was stoichiometric, while the other films are of small-off stoichiometric.
Related Links	https://iopscience.iop.org/article/10.1088/2053-1591/ab1208/pdf
ISSN	20531591
e-ISSN	20531591
DOI	10.1088/2053-1591/ab1208
Journal	Materials Research Express
Issue Number	7
Volume Number	6
Language	English
Publisher	IOP Publishing
Publisher Date	2019-03-21
Access Restriction	Open
Subject Keyword	Journal: Materials Research Express Surface Roughness
Content Type	Text
Resource Type	Article
Subject	Surfaces, Coatings and Films Metals and Alloys Biomaterials Electronic, Optical and Magnetic Materials Polymers and Plastics