Gate-controlled VO 2 phase transition for high-performance smart windows
Chen S.3; Wang Z.1; Ren H.3; Chen Y.3; Yan W.3; Wang C.1; Li B.3; Jiang J.1; Zou C.3
Source PublicationScience Advances
AbstractVanadium dioxide (VO ) is a promising material for developing energy-saving “smart windows,” owing to its infrared thermochromism induced by metal-insulator transition (MIT). However, its practical application is greatly limited by its relatively high critical temperature (~68°C), low luminous transmittance (<60%), and poor solar energy regulation ability (<15%). Here, we developed a reversible and nonvolatile electric field control of the MIT of a monoclinic VO film. With a solid electrolyte layer assisting gating treatment, we modulated the insertion/extraction of hydrogen into/from the VO lattice at room temperature, causing tristate phase transitions that enable control of light transmittance. The dramatic increase in visible/infrared transmittance due to the phase transition from the metallic (lightly H-doped) to the insulating (heavily H-doped) phase results in an increased solar energy regulation ability up to 26.5%, while maintaining 70.8% visible luminous transmittance. These results break all previous records and exceed the theoretical limit for traditional VO smart windows, making them ready for energy-saving utilization.
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Cited Times [WOS]:16   [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.University of Science and Technology of China
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GB/T 7714
Chen S.,Wang Z.,Ren H.,et al. Gate-controlled VO 2 phase transition for high-performance smart windows[J]. Science Advances,2019,5(3).
APA Chen S..,Wang Z..,Ren H..,Chen Y..,Yan W..,...&Zou C..(2019).Gate-controlled VO 2 phase transition for high-performance smart windows.Science Advances,5(3).
MLA Chen S.,et al."Gate-controlled VO 2 phase transition for high-performance smart windows".Science Advances 5.3(2019).
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