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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
2019
Source PublicationMATERIALS RESEARCH EXPRESS
ISSN2053-1591
Volume6Issue:2
SubtypeArticle
AbstractOptical 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).
KeywordVO2 metal-to-insulator transition spectroscopic ellipsometry electronic structure
DOI10.1088/2053-1591/aaed74
WOS KeywordMETAL-INSULATOR-TRANSITION ; VANADIUM DIOXIDE ; OPTICAL-PROPERTIES ; TEMPERATURE
Language英语
WOS Research AreaMaterials Science
PublisherIOP PUBLISHING LTD
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/27560
Collection中国科学院上海硅酸盐研究所
Recommended Citation
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).
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