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Controlled growth of pure cubic Mg 0.3 Zn 0.7 O thin films on c-plane sapphire by introducing graded buffer layer
Zheng J.3; Zhang Z.-Z.3; Wang L.-K.3; Han S.3; Zhang J.-Y.3; Liu Y.-C.2; Wang S.-P.3; Jiang M.-M.3; Li B.-H.3; Zhao D.-X.3; Liu L.3; Liu K.-W.3; Shan C.-X.3; Shen D.-Z.3
2014-09-01
Source PublicationFaguang Xuebao/Chinese Journal of Luminescence
ISSN10007032
Volume35Issue:9Pages:1040-1045
AbstractDeveloping growth techniques to suppress phase separation is a key point to realize bandgap modulation of MgZnO from 3.3 to 7.8 eV. A graded quasi-homo buffer layer, composed of a MgO layer and a continuously Zn-increased MgZnO layer, was used to grow pure cubic Mg Zn O thin films on c-plane sapphire by MOCVD method. The Zn content in rocksalt Mg Zn O is expanded to ~0.7 and the optical bandgap of the films was decreased as low as 4.45 eV, corresponding to the long wavelength edge of solar-blind band. Parallel experiments suggested that the buffer layer played an important role as a structural template for the following growth of Mg Zn O epilayers and a substrate temperature range from 350℃ to 400℃ was benefit to increase solution of Zn in the RS-MgZnO films. A photoconductive UV detector based on a Mg Zn O film exhibits responsivity peak at 270 nm and a cutoff wavelength at 295 nm.
KeywordBandgap modulation Buffer layer Cubic MgZnO
DOI10.3788/fgxb20143509.1040
URLView the original
Language英語
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Document TypeJournal article
CollectionUniversity of Macau
Affiliation1.University of Chinese Academy of Sciences
2.Northeast Normal University
3.Changchun Institute of Optics Fine Mechanics and Physics Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Zheng J.,Zhang Z.-Z.,Wang L.-K.,et al. Controlled growth of pure cubic Mg 0.3 Zn 0.7 O thin films on c-plane sapphire by introducing graded buffer layer[J]. Faguang Xuebao/Chinese Journal of Luminescence,2014,35(9):1040-1045.
APA Zheng J..,Zhang Z.-Z..,Wang L.-K..,Han S..,Zhang J.-Y..,...&Shen D.-Z..(2014).Controlled growth of pure cubic Mg 0.3 Zn 0.7 O thin films on c-plane sapphire by introducing graded buffer layer.Faguang Xuebao/Chinese Journal of Luminescence,35(9),1040-1045.
MLA Zheng J.,et al."Controlled growth of pure cubic Mg 0.3 Zn 0.7 O thin films on c-plane sapphire by introducing graded buffer layer".Faguang Xuebao/Chinese Journal of Luminescence 35.9(2014):1040-1045.
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