Study of the phase transition properties and electronic band structures of VO2 thin films grown on different substrates

doi:10.1088/2053-1591/aaed74

	Study of the phase transition properties and electronic band structures of VO2 thin films grown on different substrates
	Guo, Yunfeng; Zhang, Yuzhi; Zhang, Liangmiao; Lv, Xinrui; Wu, Lingnan; Cao, Yunzhen; Song, Lixin
刊名	MATERIALS RESEARCH EXPRESS
	2019
卷号	6 期号:2
关键词	VO2 metal-to-insulator transition spectroscopic ellipsometry electronic structure
ISSN号	2053-1591
DOI	10.1088/2053-1591/aaed74
文献子类	Article
英文摘要	Optical properties and electronic structures of VO2 films obtained by magnetron sputtering method on quartz and sapphire substrates were analyzed by transmission spectrum and spectroscopic ellipsometry (SE). The metal-to-insulator transition (MIT) characteristics of the two thin films were compared and discussed correlating with their structural details. By fitting spectroscopic ellipsometric data,. the dielectric functions, electronic transitions, and optical bandgap of VO2 films can be tuned by substrate effects. On quartz substrate, the VO2 film exhibits a lower transition temperature and broader thermal hysteresis (Delta H). It is found that the lowest order transition (E-1) on quartz substrate does not reduce to zero in the metallic phase as expected. There are two reasons: one is the slight decrease in the filled a(1g) bands compared to the e(g)(pi) bands due to a greater compressive stress in the quartz films; the other is associated with the donor level (E-D) and acceptor level (E-A).
WOS关键词	METAL-INSULATOR-TRANSITION ; VANADIUM DIOXIDE ; OPTICAL-PROPERTIES ; TEMPERATURE
WOS研究方向	Materials Science
语种	英语
出版者	IOP PUBLISHING LTD
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/27560]
专题	中国科学院上海硅酸盐研究所
推荐引用方式 GB/T 7714	Guo, Yunfeng,Zhang, Yuzhi,Zhang, Liangmiao,et al. Study of the phase transition properties and electronic band structures of VO2 thin films grown on different substrates[J]. MATERIALS RESEARCH EXPRESS,2019,6(2).
APA	Guo, Yunfeng.,Zhang, Yuzhi.,Zhang, Liangmiao.,Lv, Xinrui.,Wu, Lingnan.,...&Song, Lixin.(2019).Study of the phase transition properties and electronic band structures of VO2 thin films grown on different substrates.MATERIALS RESEARCH EXPRESS,6(2).
MLA	Guo, Yunfeng,et al."Study of the phase transition properties and electronic band structures of VO2 thin films grown on different substrates".MATERIALS RESEARCH EXPRESS 6.2(2019).