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Updated: May 23, 2026

Atomic Layer Deposition of Vanadium Dioxide and a Temperature-dependent Optical Model
Published on: May 23, 2018
Identifying structural distortion in doped VO2 with IR spectroscopy.
Ran Long1, Bingyan Qu, Renchang Tan
1Hefei National Laboratory for Physical Sciences at Microscale, University of Science & Technology of China, Hefei, PR China.
Tungsten doping vanadium dioxide (VO2) lowers its metal-insulator transition temperature. Infrared spectroscopy identified structural changes, enabling controlled tuning of VO2 properties for tailored applications.
Area of Science:
- Materials Science
- Condensed Matter Physics
- Solid-State Chemistry
Background:
- Vanadium dioxide (VO2) exhibits a metal-insulator transition (MIT) near room temperature, a property with potential applications in electronics and thermochromic devices.
- Controlling the MIT temperature of VO2 is crucial for its practical implementation.
- Doping VO2 with other elements is a common strategy to tune its electronic and structural properties.
Purpose of the Study:
- To investigate the effect of tungsten (W) doping on the metal-insulator transition (MIT) temperature of VO2.
- To identify the structural changes associated with tungsten doping in VO2.
- To demonstrate the use of infrared spectroscopy for characterizing these changes and controlling MIT properties.
Main Methods:
- Synthesis of tungsten-doped VO2 materials.
- Infrared (IR) spectroscopy was utilized to probe structural and electronic changes.
- Analysis of IR spectra to correlate structural modifications with the MIT temperature.
Main Results:
- Tungsten doping was confirmed to effectively lower the metal-insulator transition temperature of VO2.
- Infrared spectroscopy revealed distinct structural changes in the doped VO2 lattice.
- The observed structural modifications directly correlated with the reduction in MIT temperature.
Conclusions:
- Tungsten doping provides a viable method for precisely controlling the MIT temperature of VO2.
- Infrared spectroscopy is a powerful tool for understanding the underlying structural mechanisms of the MIT in doped VO2.
- Tailoring the MIT properties of VO2 through doping opens avenues for advanced functional materials.
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