Microwave Hydrothermal Preparation of VO2

As a thermal phase transition material, VO2 is famous for its phase transition performance. When the temperature is lower than the phase transition temperature, VO2 behaves as a semiconductor with high infrared transmittance. When the temperature exceeds the phase transition temperature, VO2 exhibit...

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Bibliographic Details
Published in:Physica status solidi. A, Applications and materials science Applications and materials science, 2024-02, Vol.221 (4)
Main Authors: Lu, Di, Li, Dehu, Wang, Yue, Zhang, Yuxin, Yu, Zhisong, Xi, Xuekui
Format: Article
Language:English
Subjects:
Annealing
Phase transitions
Refractivity
Transition temperature
Vanadium dioxide
Vanadium oxides
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Summary:As a thermal phase transition material, VO2 is famous for its phase transition performance. When the temperature is lower than the phase transition temperature, VO2 behaves as a semiconductor with high infrared transmittance. When the temperature exceeds the phase transition temperature, VO2 exhibits a metallic state and has a high refractive index for infrared. Regulation of phase transition temperature is key to the application of VO2. In this article, microwave hydrothermal is used to prepare VO2. H+ concentration, microwave power, annealing temperature, and annealing time are used as variable conditions to find the best preparation conditions. The preparation of samples is studied by X‐ray diffractometer, scanning electron microscope, and differential scanning calorimeter. After comparative research, the optimum preparation process of vanadium dioxide by microwave hydrothermal method is found. In addition, by varying the acidic conditions and microwave power during the preparation process, the phase transition temperature of VO2 can be regulated.
ISSN:1862-6300
1862-6319
DOI:10.1002/pssa.202300432