Title

Optical and structural properties of NiMgO thin films formed by sol-gel spin coating

Authors

Authors

R. C. Boutwell; M. Wei; A. Scheurer; J. W. Mares;W. V. Schoenfeld

Comments

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Abbreviated Journal Title

Thin Solid Films

Keywords

NiMgO; Sol-gel; Thin films; Spin coating; Ultraviolet solar blind; X-ray; diffraction; Optical properties; MAGNESIUM-OXIDE; NICKEL-OXIDE; MGO; LUMINESCENCE; Materials Science, Multidisciplinary; Materials Science, Coatings &; Films; Physics, Applied; Physics, Condensed Matter

Abstract

Ni1-xMgxO thin films across the full compositional range were formed by a low-cost sol-gel spin coating method. Optical transmission of the resultant films in the ultraviolet-visible spectral region increased to as high as 90% upon sintering, and X-ray diffraction verified an increase in crystallinity for sintering temperatures up to 1000 degrees C, with root mean square roughness below 1 nm when sintered between 600 and 800 degrees C. The lattice parameter of the rock salt Ni1-xMgxO films showed a linear shift with increased magnesium concentration, consistent with a Vegard's Law relationship between the two binaries. Optical energy gaps from 3.6 to > 6.5 eV were realized by adjusting the composition of the Ni1-xMgxO films, demonstrating the suitability of the ternary for optical devices in the UV-C spectral region. (C) 2012 Elsevier B.V. All rights reserved.

Journal Title

Thin Solid Films

Volume

520

Issue/Number

13

Publication Date

1-1-2012

Document Type

Article

Language

English

First Page

4302

Last Page

4304

WOS Identifier

WOS:000303084200013

ISSN

0040-6090

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