Table of Contents Author Guidelines Submit a Manuscript
Journal of Nanomaterials
Volume 2011 (2011), Article ID 691582, 7 pages
http://dx.doi.org/10.1155/2011/691582
Research Article

ZnO and MgZnO Nanocrystalline Flexible Films: Optical and Material Properties

1Department of Physics, University of Idaho, Moscow, ID 83844-0903, USA
2Electron Microscopy Center, University of Idaho, Moscow, ID 83844-0903, USA

Received 14 March 2011; Accepted 25 May 2011

Academic Editor: Xuedong Bai

Copyright © 2011 Jesse Huso et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

An emerging material for flexible UV applications is O which is capable of tunable bandgap and luminescence in the UV range of ~3.4 eV–7.4 eV depending on the composition x. Studies on the optical and material characteristics of ZnO and Mg0.3Zn0.7O nanocrystalline flexible films are presented. The analysis indicates that the ZnO and Mg0.3Zn0.7O have bandgaps of 3.34 eV and 4.02 eV, respectively. The photoluminescence (PL) of the ZnO film was found to exhibit a structural defect-related emission at ~3.316 eV inherent to the nanocrystalline morphology. The PL of the Mg0.3Zn0.7O film exhibits two broad peaks at 3.38 eV and at 3.95 eV that are discussed in terms of the solubility limit of the ZnO-MgO alloy system. Additionally, external deformation of the film did not have a significant impact on its properties as indicated by the Raman LO-mode behavior, making these films attractive for UV flexible applications.