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
Selection & Validation Framework
| Decision Question | Material-Level Answer |
|---|---|
| Material profile validation | Required for: Smart Glazing and IR Shielding Coatings. Measure: identity; handling state; application acceptance criteria. Sample state: final host formulation or part state. Failure signals: application target is unmet; host compatibility is unresolved. |
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. |
Commercial Availability
Supplier role: Request confirmation
Supply status: Request confirmation
Sample status: Sample availability requires confirmation
Commercial details are not published until the source and verification fields are complete and the Supplier Data Packet is signed by the sales owner, technical reviewer, and resource/compliance owner. Request current grade, form, sample, packaging, and delivery confirmation.
Documents & Inquiry
Document access follows the current approval state. Unapproved or unavailable files route to a document request instead of a public download.
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.
Review Lab Capabilities for sample evaluation and qualification support, or Production Capabilities for scale-up, quality, documentation, and supply support.
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