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Photoinduced reversible lattice expansion in W-doped TiO2 through the change of its electronic structure
Feng, F; Yang, WY; Gao, S; Zhu, LG; Li, Q; Li, Q (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Environm Funct Mat Div, Shenyang 110016, Liaoning, Peoples R China.
2018-02-05
Source PublicationAPPLIED PHYSICS LETTERS
ISSN0003-6951
Volume112Issue:6Pages:-
AbstractExternal stimulations of applied force or voltage have been reported to induce crystal lattice dimension changes with the order of 0.1% or above by imposing external mechanical or electric forces on atoms forming the lattice for various types of materials, including oxides, metals, polymers, and carbon nanostructures. As far as we know, however, no report is available for similar level changes in oxides from their internal electronic structure changes induced by photoirradiation. We show that reversible lattice expansion comparable to those by applied force or voltage can be induced by UV-irradiation on an oxide of W-doped TiO2 nanotubes through the reversible changes of its internal electronic structure by the accumulation and release of photogenerated electrons in W-dopants when UV-illumination is on and off. This photoirradiation-induced reversible lattice expansion and subsequent optical, electric, and magnetic property changes may also be present in other material systems by proper material design if they possess one component that is able to produce electrons upon photoirradiation and the other component that is able to accumulate photogenerated electrons to induce lattice changes and release them after the photoirradiation is off. Published by AIP Publishing.; External stimulations of applied force or voltage have been reported to induce crystal lattice dimension changes with the order of 0.1% or above by imposing external mechanical or electric forces on atoms forming the lattice for various types of materials, including oxides, metals, polymers, and carbon nanostructures. As far as we know, however, no report is available for similar level changes in oxides from their internal electronic structure changes induced by photoirradiation. We show that reversible lattice expansion comparable to those by applied force or voltage can be induced by UV-irradiation on an oxide of W-doped TiO2 nanotubes through the reversible changes of its internal electronic structure by the accumulation and release of photogenerated electrons in W-dopants when UV-illumination is on and off. This photoirradiation-induced reversible lattice expansion and subsequent optical, electric, and magnetic property changes may also be present in other material systems by proper material design if they possess one component that is able to produce electrons upon photoirradiation and the other component that is able to accumulate photogenerated electrons to induce lattice changes and release them after the photoirradiation is off. Published by AIP Publishing.
description.department[feng, fan ; yang, weiyi ; li, qi] chinese acad sci, inst met res, shenyang natl lab mat sci, environm funct mat div, shenyang 110016, liaoning, peoples r china ; [feng, fan] univ chinese acad sci, beijing 100049, peoples r china ; [gao, shuang] tsinghua univ, div energy & environm, grad sch shenzhen, shenzhen 518055, peoples r china ; [zhu, linggang] beihang univ, sch mat sci & engn, beijing 100191, peoples r china
KeywordTotal-energy Calculations Effective Ionic-radii Wave Basis-set Nanotube Arrays Actuators Nitrogen Photochromism Performance Oxidation Dynamics
Subject AreaPhysics, Applied
Funding OrganizationNational Natural Science Foundation of China [51672283, 51602316]; Basic Science Innovation Program of Shenyang National Laboratory for Materials Science [Y4N56R1161, Y5N56F2161]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/79522
Collection中国科学院金属研究所
Corresponding AuthorLi, Q (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Environm Funct Mat Div, Shenyang 110016, Liaoning, Peoples R China.
Recommended Citation
GB/T 7714
Feng, F,Yang, WY,Gao, S,et al. Photoinduced reversible lattice expansion in W-doped TiO2 through the change of its electronic structure[J]. APPLIED PHYSICS LETTERS,2018,112(6):-.
APA Feng, F,Yang, WY,Gao, S,Zhu, LG,Li, Q,&Li, Q .(2018).Photoinduced reversible lattice expansion in W-doped TiO2 through the change of its electronic structure.APPLIED PHYSICS LETTERS,112(6),-.
MLA Feng, F,et al."Photoinduced reversible lattice expansion in W-doped TiO2 through the change of its electronic structure".APPLIED PHYSICS LETTERS 112.6(2018):-.
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