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

被引：47

作者：

Chen, Ru ^{[1
,2
]}

Miao, Lei ^{[1
,3
]}

Liu, Chengyan ^{[3
]}

Zhou, Jianhua ^{[3
]}

Cheng, Haoliang ^{[1
]}

Asaka, Toru ^{[4
]}

Iwamoto, Yuji ^{[4
]}

Tanemura, Sakae ^{[1
,3
]}

机构：

[1] Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy, Guangzhou 510640, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Guilin Univ Elect Technol, Sch Mat Sci & Engn, Guangxi Collaborat Innovat Ctr Struct & Property, Guangxi Key Lab Informat Mat, Guilin 541004, Peoples R China

[4] Nagoya Inst Technol, Grad Sch Engn, Dept Frontier Mat, Showa Ku, Nagoya, Aichi 4668555, Japan

来源：

SCIENTIFIC REPORTS | 2015年 / 5卷

关键词：

METAL-INSULATOR-TRANSITION; VANADIUM DIOXIDE; HYDROTHERMAL SYNTHESIS; FILMS; OXIDES; NANORODS; V1-XWXO2;

D O I：

10.1038/srep14087

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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(M/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.

引用

页数：12

共 46 条

[41] Room temperature photo-induced phase transitions of VO2 nanodevices [J].