Effects of ion irradiation and annealing on optical and structural properties of CeO2 films on sapphire

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	Effects of ion irradiation and annealing on optical and structural properties of CeO2 films on sapphire
	M. Y. Chen; X. T. Zu; X. Xiang; H. L. Zhang
	2007
发表期刊	Physica B-Condensed Matter
ISSN	0921-4526
卷号	389 期号:2 页码:263-268
摘要	(001) CeO2 films deposited on r-cut sapphire were irradiated by N+ ions at fluences of 1 x 10(16), 5 x 10(16) and 1 x 10(17) ion/cm(2) at room temperature and then annealed at 200-900 degrees C in O-2 ambient. X-ray diffraction results showed that there was no change for the orientation and crystallinity of CeO2 film after irradiation. However, the diffraction peaks became sharper after annealing at 900 degrees C. Atomic force microscope measurements revealed isolated voids after ion irradiation. The optical transmittance spectra indicated a blueshift of band gap due to the valence transition of Ce3+-> Ce4+ induced by thermal annealing. As-deposited films exhibited three photoluminescence bands at 300-390, 380-550, and 460-550 nm. A new emission band peaked at 670 nm appeared while the emission band at 460-550 nm disappeared after annealing. The CeO2 films show good thermal stability and irradiat on resistance except some isolated voids in this work. (c) 2006 Elsevier B.V. All rights reserved.
部门归属	univ elect sci & technol china, dept appl phys, chengdu 610054, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110015, peoples r china. univ elect sci & technol china, coll microelect & solid state elect, chengdu 610054, peoples r china.;zu, xt (reprint author), univ elect sci & technol china, dept appl phys, chengdu 610054, peoples r china;xiaotaozu@yahoo.com
关键词	Ceo2 Film Xrd Afm Optical Properties Photoluminescence Cerium Oxide Thin-films Growth Deposition Silicates
URL	查看原文
WOS记录号	WOS:000244129900009
引用统计	被引频次：78[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/33453
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	M. Y. Chen,X. T. Zu,X. Xiang,et al. Effects of ion irradiation and annealing on optical and structural properties of CeO2 films on sapphire[J]. Physica B-Condensed Matter,2007,389(2):263-268.
APA	M. Y. Chen,X. T. Zu,X. Xiang,&H. L. Zhang.(2007).Effects of ion irradiation and annealing on optical and structural properties of CeO2 films on sapphire.Physica B-Condensed Matter,389(2),263-268.
MLA	M. Y. Chen,et al."Effects of ion irradiation and annealing on optical and structural properties of CeO2 films on sapphire".Physica B-Condensed Matter 389.2(2007):263-268.