National Changhua University of Education Institutional Repository : Item 987654321/14266
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题名: Effects of Na Content on the Luminescence Behavior, Conduction Type, and Crystal Structure of Na-doped ZnO Films
作者: Lai, Jian-Jhong;Lin, Yow-Jon;Chen, Ya-Hui;Chang, Hsing-Cheng;Liu, Chia-Jyi;Zou, Yi-Yan;Shih, Yu-Tai;Wang, Meng-Chieh
贡献者: 物理學系
日期: 2011
上传时间: 2012-09-10T06:17:04Z
出版者: American Institute of Physics
摘要: This study investigates the effect of Na content on the structural, optical, and electrical properties of sol-gel Na-doped ZnO films using x-ray diffraction, photoluminescence, and conductivity measurements. It is shown that a p-type conversion of the Na-doped ZnO film might be due to a combined effect of the increased substitutional-Na density and the decreased oxygen-vacancy (VO) density. However, excess Na incorporation into ZnO shows an ambiguous carrier type due to the increase in the donorlike VO density. These results indicate that compensation effects limit the hole concentration in the Na-doped ZnO films. In addition, when more Na is substituted into the ZnO system, the difference in the ionic radii of Zn2+ and Na+ starts playing an increasingly important role, causing the presence of tensile stress in the Na-doped ZnO film.
關聯: JOURNAL OF APPLIED PHYSICS, 110(1): 013704-013707
显示于类别:[物理學系] 期刊論文

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