Photoinduced reversible lattice expansion in W-doped TiO2 through the change of its electronic structure

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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
发表期刊	APPLIED PHYSICS LETTERS
ISSN	0003-6951
卷号	112 期号:6 页码:-
摘要	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.; 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.
部门归属	[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
关键词	Total-energy Calculations Effective Ionic-radii Wave Basis-set Nanotube Arrays Actuators Nitrogen Photochromism Performance Oxidation Dynamics
学科领域	Physics, Applied
资助者	National Natural Science Foundation of China [51672283, 51602316]; Basic Science Innovation Program of Shenyang National Laboratory for Materials Science [Y4N56R1161, Y5N56F2161]
收录类别	SCI
语种	英语
WOS记录号	WOS:000424703200015
引用统计	被引频次：7[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/321006/79522
专题	中国科学院金属研究所
通讯作者	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.
推荐引用方式 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):-.