Effects of pH of the precursor sol on structural and optical properties of Cu-doped ZnO thin films

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	Effects of pH of the precursor sol on structural and optical properties of Cu-doped ZnO thin films
	H. Yuan; M. Xu; Q. Z. Huang
	2014
发表期刊	Journal of Alloys and Compounds
ISSN	0925-8388
卷号	616 页码:401-407
摘要	Cu-doped ZnO thin films deposited on glass substrates by a sol-gel method with sol pH ranging from 6 to 10 were investigated. Characterization of the morphology and microstructures by scanning electron microscopy (SEM) and X-ray diffraction (XRD) revealed that the grain size decreases slightly with an increase of the pH value of the precursor sol. ZnO vary in their orientation along the preferred (002) plane, while the best c-axis orientation occurs in the thin film fabricated from the precursor sal with pH = 8.5. X-ray photoelectron spectroscope (XPS) and XRD results indicate that Cu ions are indeed substituted at the Zn2+ site into the ZnO lattice. Strong ultraviolet emission, blue double emission and weak green emission peaks are observed in the photoluminescence spectra of all samples at room temperature. Further studies show that adjusting the pH of the precursor sol can well tune the bandgap from 3.19 to 2.42 eV. (C) 2014 Elsevier B.V. All rights reserved.
部门归属	[yuan, h. ; xu, m. ; huang, q. z.] southwest univ nationalities, key lab informat mat sichuan prov, sch elect & informat engn, chengdu 610041, peoples r china. [xu, m.] chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china. ; xu, m (reprint author), southwest univ nationalities, key lab informat mat sichuan prov, sch elect & informat engn, chengdu 610041, peoples r china. ; hsuming_2001@aliyun.com
关键词	Zno Films Sol-gel Ph Optical Properties Room-temperature Ferromagnetism Zinc-oxide Gel Method Nanograined Films Energy-gap Band-gap Copper Photoluminescence Microstructure Nanoparticles
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/73479
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. Yuan,M. Xu,Q. Z. Huang. Effects of pH of the precursor sol on structural and optical properties of Cu-doped ZnO thin films[J]. Journal of Alloys and Compounds,2014,616:401-407.
APA	H. Yuan,M. Xu,&Q. Z. Huang.(2014).Effects of pH of the precursor sol on structural and optical properties of Cu-doped ZnO thin films.Journal of Alloys and Compounds,616,401-407.
MLA	H. Yuan,et al."Effects of pH of the precursor sol on structural and optical properties of Cu-doped ZnO thin films".Journal of Alloys and Compounds 616(2014):401-407.