Shape-controlled synthesis and influence of W doping and oxygen nonstoichiometry on the phase transition of VO2

Ru Chen; Lei Miao; Chengyan Liu; Jianhua Zhou; Haoliang Cheng; Toru Asaka; Yuji Iwamoto; Sakae Tanemura

doi:10.1038/srep14087

Shape-controlled synthesis and influence of W doping and oxygen nonstoichiometry on the phase transition of VO₂

Ru Chen, Lei Miao, Chengyan Liu, Jianhua Zhou, Haoliang Cheng, Toru Asaka, Yuji Iwamoto, Sakae Tanemura

Research output: Contribution to journal › Article › peer-review

46 Citations (Scopus)

Abstract

Monoclinic VO₂ (M) in nanostructure is a prototype material for interpreting correlation effects in solids with fully reversible phase transition and for the advanced applications to smart devices. Here, we report a facile one-step hydrothermal method for the controlled growth of single crystalline VO₂ (M/R) nanorods. Through tuning the hydrothermal temperature, duration of the hydrothermal time and W-doped level, single crystalline VO₂ (M/R) nanorods with controlled aspect ratio can be synthesized in large quantities, and the crucial parameter for the shape-controlled synthesis is the W-doped content. The dopant greatly promotes the preferential growth of (110) to form pure phase VO₂ (R) nanorods with high aspect ratio for the W-doped level=2.0 at% sample. The shape-controlled process of VO₂ (M/R) nanorods upon W-doping are systematically studied. Moreover, the phase transition temperature (T_c) of VO₂ depending on oxygen nonstoichiometry is investigated in detail.

Original language	English
Article number	14087
Journal	Scientific Reports
Volume	5
DOIs	https://doi.org/10.1038/srep14087
Publication status	Published - 2015 Sept 16
Externally published	Yes

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title = "Shape-controlled synthesis and influence of W doping and oxygen nonstoichiometry on the phase transition of VO2",

abstract = "Monoclinic VO2 (M) in nanostructure is a prototype material for interpreting correlation effects in solids with fully reversible phase transition and for the advanced applications to smart devices. Here, we report a facile one-step hydrothermal method for the controlled growth of single crystalline VO2 (M/R) nanorods. Through tuning the hydrothermal temperature, duration of the hydrothermal time and W-doped level, single crystalline VO2 (M/R) nanorods with controlled aspect ratio can be synthesized in large quantities, and the crucial parameter for the shape-controlled synthesis is the W-doped content. The dopant greatly promotes the preferential growth of (110) to form pure phase VO2 (R) nanorods with high aspect ratio for the W-doped level=2.0 at% sample. The shape-controlled process of VO2 (M/R) nanorods upon W-doping are systematically studied. Moreover, the phase transition temperature (Tc) of VO2 depending on oxygen nonstoichiometry is investigated in detail.",

author = "Ru Chen and Lei Miao and Chengyan Liu and Jianhua Zhou and Haoliang Cheng and Toru Asaka and Yuji Iwamoto and Sakae Tanemura",

note = "Funding Information: This work was supported by Science and Technology Planning Project of Guangdong Province, China (Grant No. 2013B050800006), External Cooperation Program of BIC, Chinese Academy of Sciences (Grant No. 182344KYSB20130006). Publisher Copyright: {\textcopyright} 2015, Nature Publishing Group. All rights reserved.",

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AU - Chen, Ru

AU - Miao, Lei

AU - Liu, Chengyan

AU - Zhou, Jianhua

AU - Cheng, Haoliang

AU - Asaka, Toru

AU - Iwamoto, Yuji

AU - Tanemura, Sakae

N1 - Funding Information: This work was supported by Science and Technology Planning Project of Guangdong Province, China (Grant No. 2013B050800006), External Cooperation Program of BIC, Chinese Academy of Sciences (Grant No. 182344KYSB20130006). Publisher Copyright: © 2015, Nature Publishing Group. All rights reserved.

PY - 2015/9/16

Y1 - 2015/9/16

N2 - Monoclinic VO2 (M) in nanostructure is a prototype material for interpreting correlation effects in solids with fully reversible phase transition and for the advanced applications to smart devices. Here, we report a facile one-step hydrothermal method for the controlled growth of single crystalline VO2 (M/R) nanorods. Through tuning the hydrothermal temperature, duration of the hydrothermal time and W-doped level, single crystalline VO2 (M/R) nanorods with controlled aspect ratio can be synthesized in large quantities, and the crucial parameter for the shape-controlled synthesis is the W-doped content. The dopant greatly promotes the preferential growth of (110) to form pure phase VO2 (R) nanorods with high aspect ratio for the W-doped level=2.0 at% sample. The shape-controlled process of VO2 (M/R) nanorods upon W-doping are systematically studied. Moreover, the phase transition temperature (Tc) of VO2 depending on oxygen nonstoichiometry is investigated in detail.

AB - Monoclinic VO2 (M) in nanostructure is a prototype material for interpreting correlation effects in solids with fully reversible phase transition and for the advanced applications to smart devices. Here, we report a facile one-step hydrothermal method for the controlled growth of single crystalline VO2 (M/R) nanorods. Through tuning the hydrothermal temperature, duration of the hydrothermal time and W-doped level, single crystalline VO2 (M/R) nanorods with controlled aspect ratio can be synthesized in large quantities, and the crucial parameter for the shape-controlled synthesis is the W-doped content. The dopant greatly promotes the preferential growth of (110) to form pure phase VO2 (R) nanorods with high aspect ratio for the W-doped level=2.0 at% sample. The shape-controlled process of VO2 (M/R) nanorods upon W-doping are systematically studied. Moreover, the phase transition temperature (Tc) of VO2 depending on oxygen nonstoichiometry is investigated in detail.

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Shape-controlled synthesis and influence of W doping and oxygen nonstoichiometry on the phase transition of VO₂

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