Influence of Li-dopants on the luminescent and ferroelectric properties of ZnO thin films

Zhang, Y. J., Wang, J. B., Zhong, X. L., Zhou, Y. C., Yuan, X. L. and Sekiguchi, T. (2008) Influence of Li-dopants on the luminescent and ferroelectric properties of ZnO thin films. Solid State Communications, 148 9-10: 448-451.


Author Zhang, Y. J.
Wang, J. B.
Zhong, X. L.
Zhou, Y. C.
Yuan, X. L.
Sekiguchi, T.
Title Influence of Li-dopants on the luminescent and ferroelectric properties of ZnO thin films
Journal name Solid State Communications   Check publisher's open access policy
ISSN 0038-1098
Publication date 2008-09
Sub-type Article (original research)
DOI 10.1016/j.ssc.2008.09.014
Volume 148
Issue 9-10
Start page 448
End page 451
Total pages 4
Editor A. Pinczuk
Place of publication Amsterdam, The Netherlands
Publisher Elsevier B.V.
Language eng
Subject 250203 Solid State Chemistry
Abstract Zn1􀀀xLixO thin films (0:005 x 0:12) were prepared on Pt=Ti=SiO2=Si substrates via a sol-gel spin coating method. Cathodoluminescence (CL) studies showed that the luminescent efficiency of specimens is degraded sharply with the increment of Li concentration, which indicates that non-radiative centers are introduced during the doping process. From low temperature CL studies, two luminescent peaks centered at 3.28 and 3.31 eV increase gradually with the increment of Li concentration, which are assigned to acceptor bound exciton transitions related to LiZn and LiZn Lii complex, respectively. Ferroelectricity in Zn1􀀀xLixO(0:08 x 0:12) thin films was found from the polarization hysteresis loop. The remnant polarization increases from 0.12 to 0:23 mC=cm2 as the x increases from 0.08 to 0.12. LiZn and LiZnLii complex play important roles in the ferroelectric appearance of Li-doped ZnO thin films
Keyword ZnO thin films
Sol-gel Process
Optical properties
Ferroelectric properties
Q-Index Code C1
Q-Index Status Provisional Code

Document type: Journal Article
Sub-type: Article (original research)
Collections: Julius Kruttschnitt Mineral Research Centre Publications
Excellence in Research Australia (ERA) - Collection
 
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Created: Wed, 13 Jan 2010, 16:08:44 EST by Rosalind Blair on behalf of Sustainable Minerals Institute