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Ti掺杂ZnO纳米薄膜的微结构/生长取向程度及其光致发光特性研究 被引量:2

Study on the microstructure/growth orientation degree and photoluminescence properties of ZnO films with Ti doping
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摘要 采用射频(RF)反应磁控溅射技术在Si衬底上分别制备了具有(100)方向生长的ZnO薄膜和Ti掺杂ZnO薄膜(ZnO∶Ti).利用X射线衍射(XRD)和光致荧光发光(PL)表征技术,研究了不同Ti掺杂浓度对ZnO薄膜微观结构和光学性能的影响.结果显示,Ti掺杂前后ZnO薄膜都具有六角纤锌矿结构,同时均表现出沿(100)方向的择优生长特性;掺入2%Ti元素后薄膜的织构系数Tc(100)明显增加,表明Ti的掺入对ZnO薄膜的结晶取向程度有一定影响.与未掺杂的ZnO薄膜相比,ZnO∶Ti薄膜的衍射峰发生宽化且峰强减小,薄膜的结晶质量下降.改变Ti的掺杂量,发现Si衬底上制备的薄膜发光强度和发光峰位随掺杂浓度发生相应的改变. The pure ZnO film and Ti-doped ZnO(ZnO∶Ti) thin films with(100) preferred orientation are deposited successfully on silicon(Si) substrate using radio frequency(RF)reactive magnetron sputtering technique.The effect of different Ti doping concentration on the microstructural and optical properties of ZnO∶Ti thin films are investigated by X-ray diffraction(XRD) and photoluminescence(PL).The results show that all of the films have hexagonal wurtzite type structure with obvious(100) preferential orientation,and the thin film texture coefficient Tc(100) increase sharply with adding 2% of Ti doping,which indicates that Ti impurities can influence crystallinzation orientation degree of ZnO films.Compare with pure ZnO thin films,the full width at half-maximum(FWHM) of(100) diffraction peak of ZnO∶Ti thin films widen and the intensity of(100) diffraction peak decrease,and the quality of crystallization of thin films decline.With different Ti doping concentration on ZnO films,its luminescence correspondingly changes,not only intensity changes,but peak positions have been moved on the Si substrates.
出处 《西北师范大学学报(自然科学版)》 CAS 北大核心 2013年第3期34-39,共6页 Journal of Northwest Normal University(Natural Science)
基金 国家自然科学基金资助项目(10874140) 教育部留学回国人员科研启动基金资助项目 甘肃省高等学校基本科研业务费资助项目(2010-2012)
关键词 Ti掺杂ZnO薄膜 射频反应磁控溅射 X射线衍射 光致发光 Ti doped ZnO films RF magnetron sputtering X-ray diffraction photoluminescence
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参考文献20

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二级参考文献13

共引文献13

同被引文献28

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