Composition Dependence on Structural and Optical Properties of MgxZn1-xO Thin Films Prepared by Sol-Gel Method

Title
Composition Dependence on Structural and Optical Properties of MgxZn1-xO Thin Films Prepared by Sol-Gel Method
Author(s)
김종수Kim Min Su[Kim Min Su]Keun Tae Noh[Keun Tae Noh]Kwang Gug Yim[Kwang Gug Yim]Soaram Kim[Soaram Kim]Giwoong Nam[Giwoong Nam]Dong-Yul Lee[Dong-Yul Lee]Jin Soo Kim[Jin Soo Kim]Jae-Young Leem[Jae-Young Leem]
Keywords
LIGHT-EMITTING-DIODES; ZNO FILMS; GROWTH; LUMINESCENCE; REALIZATION; LAYERS; ALLOY; MBE
Issue Date
201109
Publisher
KOREAN CHEMICAL SOC
Citation
BULLETIN OF THE KOREAN CHEMICAL SOCIETY, v.32, no.9, pp.3453 - 3458
Abstract
The MgxZn1-xO thin films with the various content ratio ranging from 0 to 0.4 were prepared by sol-gel spin-coating method. To investigate the effects of content ratio on the structural and optical properties of the MgxZn1-xO thin films, scanning electron microscopy (SEM), X-ray diffraction (XRD), and photoluminescence (PL) were carried out. With increase in the content ratio, the grain size of the MgxZn1-xO thin films was increased, however, at the content ratio above 0.2, MgO particles with cubic structure were formed on the surface of the MgxZn1-xO thin films, indicating that the Mg content exceeded its solubility limit in the thin films. The residual stress of the MgxZn1-xO thin films is increased with increase in the Mg mole fraction. In the PL investigations, the bandgap and the activation energy of the MgxZn1-xO thin films was increased with the Mg mole fraction.
URI
http://hdl.handle.net/YU.REPOSITORY/24643http://dx.doi.org/10.5012/bkcs.2011.32.9.3453
ISSN
0253-2964
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이과대학 > 물리학과 > Articles
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