UM
Electric-field control of Li-doping induced phase transition in VO 2 film with crystal facet-dependence
Chen Y.4; Wang Z.1; Chen S.4; Ren H.4; Li B.4; Yan W.4; Zhang G.4; Jiang J.1; Zou C.4
2018-09-01
Source PublicationNano Energy
ISSN22112855
Volume51Pages:300-307
AbstractThe use of electric-field to manipulate the transport properties of correlated oxides is promising for achieving nano-functional electronic devices. As a typical correlated oxide material, vanadium dioxide (VO ) displays a special metal-insulator transition (MIT) at about 340 K. In this work, we select a water-free electrolyte gel, Li /propylene carbonate, to achieve a non-volatile and reversible Li-doping and phase modulation in nano-VO crystal film under gating voltages. Synchrotron characterizations indicate the originally insulating VO undergoes an effective structure change and an increased V 3d-O 2p hybrid t -orbital occupancy, which is responsible for the metallic state formation as proved by first-principle calculation. The field-driving Li-doping shows pronounced facet dependence, indicating the existence of energetically favored channels for Li-ions diffusion along V-V chains as proved by dynamic stimulation. Our current findings will supply opportunities for the electric-field control of atomic sieve, correlated ionitronics and synaptic transistor.
KeywordCrystal facet-dependence Electrolyte gating Lithium doping Metal-insulator transition Nano film
DOI10.1016/j.nanoen.2018.06.070
URLView the original
Language英語
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Cited Times [WOS]:5   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Affiliation1.Hefei National Laboratory for Physical Sciences at Microscale
2.Henan University of Science and Technology
3.Georgia Institute of Technology
4.University of Science and Technology of China
Recommended Citation
GB/T 7714
Chen Y.,Wang Z.,Chen S.,et al. Electric-field control of Li-doping induced phase transition in VO 2 film with crystal facet-dependence[J]. Nano Energy,2018,51:300-307.
APA Chen Y..,Wang Z..,Chen S..,Ren H..,Li B..,...&Zou C..(2018).Electric-field control of Li-doping induced phase transition in VO 2 film with crystal facet-dependence.Nano Energy,51,300-307.
MLA Chen Y.,et al."Electric-field control of Li-doping induced phase transition in VO 2 film with crystal facet-dependence".Nano Energy 51(2018):300-307.
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