What is Vanadium Dioxide?
Vanadium Dioxide
Vanadium Dioxide (VO2) is a thermochromic phase-transition oxide candidate for Smart Glazing and thermally responsive IR-control coatings.
Technical owner: Aurexene Materials Engineering Team · Last updated: 2026-06-18
Quick Answer
Vanadium Dioxide (VO2) is the thermochromic smart-glazing route in this material set. Its temperature-dependent phase transition, transition temperature, hysteresis, optical modulation, and switching durability require final-stack validation.
What It Is Not
- Vanadium Dioxide is VO2, not V2O3, V2O5, or V4O7; oxidation state and phase are part of its switching identity.
When Not to Use It
- Do not use VO2 when only static NIR attenuation is required and thermochromic transition behavior, hysteresis, or switching durability cannot be managed.
Intrinsic Screening Summary
- Identity screen
- VO2; Vanadium dioxide phase-transition oxide particles
Application Fit
Material Identity & Specification Status
Approved values for Particle size, Purity, and Packaging are not published; confirm them during quotation or sample review.
| Property | Value |
|---|---|
| Composition | VO2 |
| CAS / identity | 12036-21-4 |
| Morphology | Vanadium dioxide phase-transition oxide particles |
| Density | 4.57 g/cm3 intrinsic VO2 density |
| Storage | Dry sealed container |
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Technical Guides
| Technical Guide | Summary |
|---|---|
| Balancing Film Thickness, Visible Transmission, Solar Modulation, Color, and Durability | Balancing Film Thickness, Visible Transmission, Solar Modulation, Color, and Durability — a method-conditioned engineering guide for Smart Glazing covering structure-function behavior at the material, interface, and finished-system boundary, process limits, validation, and qualification boundaries. |
| Diagnosing Weak Switching, Broad Transitions, and Excessive Hysteresis | Diagnosing Weak Switching, Broad Transitions, and Excessive Hysteresis — a method-conditioned engineering guide for Smart Glazing covering structure-function behavior at the material, interface, and finished-system boundary, process limits, validation, and qualification boundaries. |
| Dispersing Thermochromic Particles Without Suppressing Switching or Increasing Haze | Dispersing Thermochromic Particles Without Suppressing Switching or Increasing Haze — a method-conditioned engineering guide for Smart Glazing covering structure-function behavior at the material, interface, and finished-system boundary, process limits, validation, and qualification boundaries. |
| How Doping, Defects, and Stoichiometry Change VO2 Switching Behavior | How Doping, Defects, and Stoichiometry Change VO2 Switching Behavior — a method-conditioned engineering guide for Smart Glazing covering structure-function behavior at the material, interface, and finished-system boundary, process limits, validation, and qualification boundaries. |
| How Particle Size, Phase Purity, and Crystallinity Affect Thermochromic Coatings | How Particle Size, Phase Purity, and Crystallinity Affect Thermochromic Coatings — a method-conditioned engineering guide for Smart Glazing covering structure-function behavior at the material, interface, and finished-system boundary, process limits, validation, and qualification boundaries. |
Documents & Inquiry
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Technical Data Sheet
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Safety Data Sheet
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Grade, Sample & Qualification Support
The Aurexene Materials Engineering Team can review the required form, host system, formulation or process, target, sample quantity, volume and timeline, and the grade-specific evidence needed before qualification.
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