The influence of metal interlayers on the structural and optical properties of nano-crystalline TiO 2 films

Handle URI:
http://hdl.handle.net/10754/562121
Title:
The influence of metal interlayers on the structural and optical properties of nano-crystalline TiO 2 films
Authors:
Yang, Yong; Zhang, Qiang; Zhang, Bei; Mi, Wenbo; Chen, Long; Li, Lin; Zhao, Chao ( 0000-0002-9582-1068 ) ; Diallo, Elhadj; Zhang, Xixiang ( 0000-0002-3478-6414 )
Abstract:
TiO 2-M-TiO 2 (M = W, Co and Ag) multilayer films have been deposited on glass substrates using reactive magnetron sputtering, then annealed in air for 2 h at 500°C. The structure, surface morphology and optical properties of the films have been studied using X-ray diffraction, Raman spectroscopy, atomic force microscopy and UV-vis spectroscopy. The TiO 2-W-TiO 2 and TiO 2-Co-TiO 2 films showed crystalline phases, whereas the TiO 2-Ag-TiO 2 films remained in the amorphous state. The crystallization temperature for the TiO 2-M-TiO 2 films decreased significantly compared with pure TiO 2 film deposited on quartz. Detailed analysis of the Raman spectra suggested that the crystallization of TiO 2-M-TiO 2 films was associated with the large structural deformation imposed by the oxidation of intermediate metal layers. Moreover, the optical band gap of the films narrowed due to the appearance of impurity levels as the metal ions migrated into the TiO 2 matrix. These results indicate that the insertion of intermediate metal layers provides a feasible access to improve the structural and optical properties of anatase TiO 2 films, leading to promising applications in the field of photocatalysis. © 2011 Elsevier B.V. All rights reserved.
KAUST Department:
Advanced Nanofabrication, Imaging and Characterization Core Lab; Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program; Core Labs
Publisher:
Elsevier
Journal:
Applied Surface Science
Issue Date:
Mar-2012
DOI:
10.1016/j.apsusc.2012.01.020
Type:
Article
ISSN:
01694332
Appears in Collections:
Articles; Advanced Nanofabrication, Imaging and Characterization Core Lab; Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorYang, Yongen
dc.contributor.authorZhang, Qiangen
dc.contributor.authorZhang, Beien
dc.contributor.authorMi, Wenboen
dc.contributor.authorChen, Longen
dc.contributor.authorLi, Linen
dc.contributor.authorZhao, Chaoen
dc.contributor.authorDiallo, Elhadjen
dc.contributor.authorZhang, Xixiangen
dc.date.accessioned2015-08-03T09:45:18Zen
dc.date.available2015-08-03T09:45:18Zen
dc.date.issued2012-03en
dc.identifier.issn01694332en
dc.identifier.doi10.1016/j.apsusc.2012.01.020en
dc.identifier.urihttp://hdl.handle.net/10754/562121en
dc.description.abstractTiO 2-M-TiO 2 (M = W, Co and Ag) multilayer films have been deposited on glass substrates using reactive magnetron sputtering, then annealed in air for 2 h at 500°C. The structure, surface morphology and optical properties of the films have been studied using X-ray diffraction, Raman spectroscopy, atomic force microscopy and UV-vis spectroscopy. The TiO 2-W-TiO 2 and TiO 2-Co-TiO 2 films showed crystalline phases, whereas the TiO 2-Ag-TiO 2 films remained in the amorphous state. The crystallization temperature for the TiO 2-M-TiO 2 films decreased significantly compared with pure TiO 2 film deposited on quartz. Detailed analysis of the Raman spectra suggested that the crystallization of TiO 2-M-TiO 2 films was associated with the large structural deformation imposed by the oxidation of intermediate metal layers. Moreover, the optical band gap of the films narrowed due to the appearance of impurity levels as the metal ions migrated into the TiO 2 matrix. These results indicate that the insertion of intermediate metal layers provides a feasible access to improve the structural and optical properties of anatase TiO 2 films, leading to promising applications in the field of photocatalysis. © 2011 Elsevier B.V. All rights reserved.en
dc.publisherElsevieren
dc.subjectAnataseen
dc.subjectAnnealingen
dc.subjectAtomic force microscopyen
dc.subjectMultilayeren
dc.subjectNanocrystallineen
dc.subjectRaman spectroscopyen
dc.subjectTiO 2 filmen
dc.subjectUV-vis spectroscopyen
dc.subjectX-ray diffractionen
dc.titleThe influence of metal interlayers on the structural and optical properties of nano-crystalline TiO 2 filmsen
dc.typeArticleen
dc.contributor.departmentAdvanced Nanofabrication, Imaging and Characterization Core Laben
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentMaterials Science and Engineering Programen
dc.contributor.departmentCore Labsen
dc.identifier.journalApplied Surface Scienceen
dc.contributor.institutionTianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, Institute of Advanced Materials Physics, Tianjin University, Tianjin 300072, Chinaen
kaust.authorZhang, Qiangen
kaust.authorZhang, Beien
kaust.authorChen, Longen
kaust.authorZhao, Chaoen
kaust.authorDiallo, Elhadjen
kaust.authorZhang, Xixiangen
kaust.authorYang, Yongen
kaust.authorLi, Linen
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