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Copyright © 2015 San-Lin Young 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

Transparent [subscript]Zn1-x[/subscript] [subscript]Mgx[/subscript] O (x=0.01, 0.03, and 0.05) nanocrystalline films were prepared by sol-gel method followed by thermal annealing treatment of 700°C. Mg doping effect on the microstructural and optical properties of the [subscript]Zn1-x[/subscript] [subscript]Mgx[/subscript] O films is investigated. From SEM images of all films, mean sizes of uniform spherical grains increase progressively. Pure wurtzite structure is obtained from the results of XRD. Grain sizes increase from 34.7 nm for x=0.01 and 37.9 nm for x=0.03 to 42.1 nm for x=0.05 deduced from the XRD patterns. The photoluminescence spectra of the films show a strong ultraviolet emission and a weak visible light emission peak. The enhancement of ultraviolet emission and reduction of visible emission are observed due to the increase of Mg doping concentration and the corresponding decrease of oxygen vacancy defects. Besides, the characteristics of the dark/photo currents with n-[subscript]Zn1-x[/subscript] [subscript]Mgx[/subscript] O/n-Si heterojunction are studied for photodetector application.

Details

Title
Mg Doping Effect on the Microstructural and Optical Properties of ZnO Nanocrystalline Films
Author
San-Lin, Young; Ming-Cheng, Kao; Chen, Hone-Zern; Neng-Fu Shih; Chung-Yuan, Kung; Chun-Han, Chen
Publication year
2015
Publication date
2015
Publisher
John Wiley & Sons, Inc.
ISSN
16874110
e-ISSN
16874129
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
1706167621
Copyright
Copyright © 2015 San-Lin Young 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.