Epitaxial growth of ZnO films on (100) and (001) ¦Ã-LiAlO₂ substrates by pulsed laser deposition

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• 作者：Jun Zou ; Shengming Zhou ; Jun Xu ; Xia Zhang ; Xiaomin Li ; Zili Xie ; Ping Han and Rong Zhang
• 刊名：Journal of Materials Science
• 出版年：2006
• 出版时间：September, 2006
• 年：2006
• 卷：41
• 期：18
• 页码：5937-5940
• 全文大小：614 KB

文摘

Structural and optical properties were investigated for ZnO films grown on (100) and (001) γ-LiAlO₂ (LAO) substrates by pulsed laser deposition method. According XRD results, it is intuitionistic that (100) LAO is suitable for fabricating high quality ZnO film, while (001) LAO is unsuitable. The FWHM of XRD, stress in film and FWHM of UV PL spectra for ZnO films on (100) LAO show a decreasing with increasing substrate temperature from 300 to 600 ¡ãC. ZnO film fabricated at 600 ¡ãC has the greatest grain size, the smallest stress (0.47 Gpa) and PL FWHM value (∼85 meV). This means that the substrate temperature of 600 ¡ãC is optimum for ZnO film deposited on (100) LAO. Moreover, it was found that the UV PL spectra intensity of ZnO film is not only related to the grain size and stoichiometric, but also depends on the stress in the film.